Completely factor the expression below. 4x^2 + 14x + 10

Answers

Answer 1
Answer:

We can start by factoring out a common factor of 2 from all three terms:

4x^2 + 14x + 10 = 2(2x^2 + 7x + 5)

Now we need to factor the quadratic expression inside the parentheses. We can use the fact that we want two numbers that multiply to 5*2=10 and add to 7.

The two numbers are 2 and 5. We can use these two numbers to rewrite the quadratic expression as follows:


2x^2 + 7x + 5 = 2x^2 + 2x + 5x + 5
= 2x(x+1) + 5(x+1)
= (2x+5)(x+1)

Therefore, the fully factored form of the expression is:

4x^2 + 14x + 10 = 2(2x+5)(x+1)
Answer 2

Answer:

[tex]2(x+1)(2x+5)[/tex]

Step-by-step explanation:

First, factor out 2:

[tex]2(2x^2+7x+5)[/tex]

Consider [tex]2(2x^2+7x+5)[/tex]. Factor the expression by grouping. First, the expression needs to be rewritten as [tex]2x^2+ax+bx+5[/tex]. To find a and b, set up a system to be solved:

[tex]a + b = 7[/tex]

[tex]ab = 2 * 5 = 10[/tex]

Since ab is positive, a and b have the same sign. Since a + b is positive, a and b are both positive. List all such integer pairs that give product 10:

[tex]1, 10[/tex]

[tex]2, 5[/tex]

Calculate the sum for each pair:

[tex]1 + 10 = 11[/tex]

[tex]2 + 5 = 7[/tex]

The solution is the pair that gives sum 7:

[tex]a = 2[/tex]

[tex]b = 5[/tex]

Rewrite [tex]2x^2+7x+5[/tex] as [tex](2x^2+2x)+(5x+5):[/tex]

[tex](2x^2+2x)+(5x+5)[/tex]

Factor out 2x in the first and 5 in the second group:

[tex]2x(x+1)+5(x+1)[/tex]

Factor out common term x + 1 by using distributive property:

[tex](x+1)(2x+5)[/tex]

Rewrite the complete factored expression:

[tex]2(x+1)(2x+5)[/tex]


Related Questions

PLEASE HELP ME WITH GEOMETRY 4 QUESTIONS FOR 20 POINTS
Please help i dont understand your help helps me alot
Thank you so so much <3

Answers

Answer:

14

Step-by-step explanation:

6/9 = x+2/24

Cross multiply to expand

9( x + 2) = 24x 6

9x + 18 = 144

Subract 18 from both sides

9x = 126 Divide both sides by 9

X = 14

10/ 2x-9 = 20/9

Cross multiply

20( 2x - 9) = 10 x 9

40x - 180 = 90

Add 180 to both sides

40x = 270

Divide both sides by 40

X = 6.75

Scale question

Convert 240miles to inches

240 x 63, 660 = 15,206,400

Ratio is 3:15,206,400

Reduce to lowest term by divide both sides by 3

Scale is 1: 5068800

An item is regularly priced at $70. Shen bought it on sale for 20% off the regular price. How much did Shen pay?

Answers

An item is regularly priced at 70. Shen bought it on sale for 20% off the regular price. Shen paid 56 for the item on sale.

To determine how much Shen paid for the item on sale, follow these steps:

Find the discount amount

Subtract the discount amount from the regular price.

Calculate the discount amount.

Discount amount = Regular price × Discount percentage

Discount amount = 70 × 20%

Discount amount = 70 × 0.20

Discount amount = 14

Calculate the sale price.

Sale price = Regular price - Discount amount

Sale price = 70 - 14

Sale price = 56

Shen paid 56 for the item on sale.

for such more question on discount amount

https://brainly.com/question/9841818

#SPJ11

Pls answerrrrr
with simple working

Answers

Answer:

-137

Step-by-step explanation:

23, 15, 7, -1, -9,-17...........

    -8  -8   -8  -8.....

∴ -8n+23

if n = 20

-8(20)+23=-137

Answer:

-137

Step-by-step explanation:

The pattern is -8 every term so

15 + (-8(20-1)) = -137

its pretty much multiplying the rate by what term you want. you subtract the 1 because you started with the first term.

The length of a
rectangular poster is 5 more inches than two
times its width. The area of the poster is 33 square inches. Solve
for the dimensions (length and width) of the poster.

Answers

Answer:

width is 3 inches, length is 11 inches.

Step-by-step explanation:

Let l be the length and w be the width.

We have:

[tex]l = 2w + 5[/tex]

[tex](2w + 5)(w) = 33[/tex]

[tex]2 {w}^{2} + 5w = 33[/tex]

[tex]2 {w}^{2} + 5w - 33 = 0[/tex]

[tex](w - 3)(2w + 11) = 0[/tex]

[tex]w = 3[/tex]

[tex]l = 2(3) + 5 = 11[/tex]

the alvin secretarial service procures temporary office personnel for major corporations. they have found that 50% of their invoices are paid within ten working days. a random sample of 12 invoices is checked. what is the probability that exactly 5 of the invoices will be paid within ten working days? round your answer to four decimal places.

Answers

The probability that exactly 5 of the invoices will be paid within ten working days is 19.34% or 0.1934.

This is a binomial distribution problem, with n = 12 (the sample size) and p = 0.5 (the probability of success, which is an invoice being paid within ten working days). We want to find the probability that exactly 5 of the invoices will be paid within ten working days.

Using the binomial probability formula, the probability of exactly 5 invoices being paid within ten working days is:

P(X = 5) = (12 choose 5) * (0.5)^5 * (1-0.5)^(12-5) = 0.1934

Where (12 choose 5) is the binomial coefficient, which represents the number of ways to choose 5 invoices from a sample of 12.

Therefore, the correct answer is 0.1934 rounded to four decimal places.

To know more about probability, refer here:

https://brainly.com/question/11234923#

#SPJ11

What is 5 to the fourth power?

Answers

The correct response, based on the facts provided, is 625.

What does a math power mean?

When a base number is raised to an exponent in mathematics, the exponent represents how many times the base number has been multiplied, and the base amount is the factor that is multiplied by itself.

What do you call 5 to the power of?

In mathematics and mathematics, the fifth power, or subsolid, of a number, n, is obtained by multiplying five occurrences of n around each other:[tex]n⁵ = n × n × n × n × n.[/tex]The fourth power of a number or the squares of a number of times its cube can also be used to create fifth powers.

5 to the fourth power (also written as 5⁴) is:

[tex]5 × 5 × 5 × 5 = 625[/tex]

To know more about power visit:

https://brainly.com/question/28782029

#SPJ1

What is the volume of a cylinder with a height of 2 feet and a radius of 6 feet?

Use 3.14 for pi.

please help me use this for a study guide i have a test tomorrow!!

Answers

The volume of a cylinder is πr²h.

Given, that H = 2 ft and R = 6 Feet.

So V = πr²h = 3.14 x 6 x 6 x 2

                   = 3.14 * 72

                   = 226.08 ft³

Answer:

The volume of the cylinder is 226.08 feet^3

Step-by-step explanation:

The volume of a 3-d shape with sides straight up is

BaseArea × height.

For a cylinder the base is a circle. Area of a circle is pi•r^2

So the Volume of your cylinder is:

V = pi•r^2 • h

Fill in the info given.

V = 3.14 • 6^2 • 2

= 226.08

The units for volume are cubed, that is, 3rd power.

So 226.08 cubed ft

or 226.08 ft^3

Hope this helps!

Find the area of the figure. Round to the nearest tenth.
A 23.4 ft^2
B 28.3 ft^2
C 29.7 ft^2
D 36.0 ft^2

Answers

Answer:

C

Step-by-step explanation:

What is the area?

The area is the total space taken up by a flat (2-D) surface or shape. The area is always measured in square units.

What is diameter?

Diameter is the length across the entire circle, the line splitting the circle into two identical semicircles.

To solve for the area of a rectangle we use the expression:

A = length × width

Inserting the dimensions of the rectangle:

4 × 4 = 36

So, the area of the rectangle is 36 square feet.

Because the rectangle has a gap on the left side in the shape of a semicircle, we can first solve for the area of that semicircle.

How do we solve for the area of a semicircle?

if you know the radius of a semicircle, you can use the formula:

[tex]A = \frac{\pi r^{2} }{2}[/tex]

But first, we need to solve for the radius.

Because the diameter is twice the size of the radius, we can use this expression:

4 ÷ 2 = 2

So, the radius of the semicircle is 2ft.

Inserting 2 into the formula for r:

[tex]A = \frac{\pi 2^{2} }{2}[/tex]

First, we need to evaluate the exponent:

[tex]A = \frac{\pi 2^{2} }{2} = \frac{\pi4}{2}[/tex]

Dividing 4 by 2 gives:

[tex]\pi2[/tex]

This simplifies to:

6.28319

Subtracting that from the area of the rectangle:

36 - 6.28319 = 29.71681 = [tex]29.7ft^{2}[/tex] (Rounded to the nearest tenth)

Therefore, the answer is C.

A bicycle wheel make five rotations. The bicycle travel 30.09 find the diameter

Answers

30.09/5 = 6.018 this is the circumference of the bicycle wheel
we can use the circumference formula to find the diameter which is c = Diameter x pi
To get the diameter, we just divide by pi so the diameter of the wheel would be 1.9155 units or 1.9 rounded.
Answer: diameter ≈ 1.91 meters

Step by step explanation:

We can use the formula:

distance = circumference x number of rotations

where circumference = π x diameter.

We know that the number of rotations is 5 and the distance traveled is 30.09.

Therefore, we can write:

distance = circumference x number of rotations

30.09 = π x diameter x 5

Simplifying the equation, we get:

diameter = 30.09 / (5π)

diameter ≈ 1.91 meters (rounded to two decimal places)

Therefore, the diameter of the bicycle wheel is approximately 1.91 meters

If you only have $14 to spend, which park would you attend (assume the rides are the same quality)? Explain.

Answers

If you only have $14 to spend, the park you would attend would depend on the cost of admission and the price of the rides. Assuming that the rides are the same quality at both parks, the decision would come down to which park offers the most affordable pricing.

If Park A charges a $10 admission fee and $2 per ride, you would be able to afford 2 rides with your $14 budget.

If Park B charges a $5 admission fee and $3 per ride, you would be able to afford 3 rides with your $14 budget.

Therefore, if the pricing is as described above, it would be more cost-effective to attend Park B as you would be able to enjoy an additional ride with your budget. However, if the pricing is different or if there are other factors to consider such as distance, location, or amenities, then the decision might change.

Answer:

It's difficult to provide a definitive answer without knowing the specific parks you are considering, but I can offer some general advice on how to choose which park to attend.

First, consider the admission price for each park. If one park has a significantly higher admission price than the other, it may not be worth attending if you only have $14 to spend.

Next, consider the cost of the rides and other attractions at each park. If one park has more expensive rides or requires you to purchase tickets for each ride separately, you may not be able to enjoy as many attractions with your $14 budget.

Finally, consider any other expenses you may incur, such as food, parking, or souvenirs. If one park has significantly higher prices for these items, it may not be the best choice if you are on a tight budget.

Based on these factors, you may want to choose the park that offers the best value for your $14 budget. This could mean choosing a park with lower admission prices and more affordable rides, or a park that offers special deals or discounts that allow you to stretch your budget further. Ultimately, the park you choose will depend on your personal preferences and priorities, as well as the options available in your area.

Step-by-step explanation:

For circle B, if BG=BE, what conclusion can be made

Answers

If BG=BE, we can conclude that triangle BGE is an isosceles triangle.

In a circle, the radius is a line segment that connects the center of the circle to any point on the circle. Therefore, BG and BE are both radii of the circle. In an isosceles triangle, two sides have the same length, and the third side is a different length. In this case, the two sides with the same length are BG and BE, and the third side is GE. Since BG and BE are radii of the circle and therefore have the same length, we can conclude that triangle BGE is isosceles, and the angles opposite BG and BE are congruent.

To learn more about circle refer to:

brainly.com/question/29142813

#SPJ4

Use the factor theorem to determine if the given binomial is a factor of f f(x)=x^(4)-9x^(3)+5x^(2)+5x-2 (a) x-1 (b) x+1

Answers

Answer: f(-2)=0; yes, the binomial is a factor of the polynomial.

f(-2)≠0; the binomial is not a factor of the polynomi f(2)=0; yes, the binomial is a factor of the polynomial.

f(2)≠0; the binomial is not a factor of the polynomial.

Step-by-step explanation:

What is the domain of H(t)?

Answers

The domain of the given function H (t) is 0 ≤ t ≤ 40.

What is the domain of a function?

The collection of all the values for which a function is defined is known as the domain of that function.

We are given that the height of a model rocket, H (t) is a function of time since it was launched, t.

From the graph, we can see that the value of t is represented on the x- axis is ranging from 0 to 40.

Hence, the domain of the given function H (t) is 0 ≤ t ≤ 40.

Learn more about domain from the given link

https://brainly.com/question/1369616

#SPJ1

PLEASE HELLP MY WITH THIS An experiment consists of randomly drawing a card and recording its suit, then rolling a die and recording whether it is even or odd. The following tree diagram represents some of the possible outcomes. A 2-column tree diagram: Card & Die. The card column shows Heart, Diamond, & Club, each of which branches to even & odd in the Die column.What needs to be done to complete the tree diagram?

Answers

Add "Spade" to the Card column, with branches to "Even" and "Odd" in the Die column. Thus, option 3 is correct.

What is the probability?

Prοbability is the study οf the chances οf οccurrence οf a result, which are οbtained by the ratiο between favοrable cases and pοssible cases.

Tο cοmplete the tree diagram, we need tο add the missing branch fοr the spades suit in the card cοlumn.

Here is the cοmpleted tree diagram:

We have added the missing branch fοr the spades suit, which alsο branches intο even and οdd fοr the die rοll. We have alsο filled in the οutcοmes fοr each branch οf the tree, which include the pοssible values fοr the card (2, 3, 4, 5, 6, οr 1 fοr Ace) and the die rοll (even οr οdd).

To learn more about probability, Visit

https://brainly.com/question/13604758

#SPJ1

Which of these could be the area of Circle B? b. About 300 in2
c. About 900 in2
d. About 2,700 in2

Answers

The area of Circle B could be about 300 in², about 900 in², or about 2,700 in² depending on its radius.

To determine which one is correct, you would need to know the radius or diameter of the circle.

Use the formula for the area of a circle, which is

A = πr²,

where A is the area and

r is the radius.

If you have the radius, plug it into the formula and calculate the area.

Compare the calculated area to the options provided (300 in², 900 in², or 2,700 in²)

to determine which one is closest to the area of Circle B.

Without more information about Circle B's radius or diameter, it is impossible to determine the exact area from the

options given.

for such more question on area

https://brainly.com/question/15822332

#SPJ11

A grounds committee of a housing community plans to build a basketball court in an empty rectangular field

Answers

The mathematical equation f(w) = w² - 6w provides a representation of the remaining surface area, measured in square meters, of the field following the construction of the basketball court.

The rectangular field has an area of length x width, which can be expressed as (2w)(w) = 2w² square meters.

The basketball court has an area of length x width, which can be expressed as (w)(w+6) = w² + 6w square meters.

To find the remaining area of the field after the basketball court is built, we need to subtract the area of the basketball court from the area of the rectangular field.

So the function f(w) representing the remaining area, in square meters, is:

f(w) = 2w² - (w² + 6w)

f(w) = 2w² - w² - 6w

f(w) = w² - 6w

Therefore, the function f(w) = w² - 6w represents the area, in square meters, remaining of the field once the basketball court is built.

Learn more about rectangles here: brainly.com/question/29123947

#SPJ4

Complete question:

A grounds committee of a housing community plans to build a basketball court in an empty rectangular field.

1. The rectangular field-has a width of 2w meters and a length that is 13 meters longer than its width.

2. The basketball court has a width of w meters and a length that is 6 meters longer than its width.

Which function, f(w), represents the area, in square meters, remaining of the field once the basketball court is built?

Point P divides the directed line segment from point A(-4,-1) to point B(6,4) in the ratio 2:3. The coordinates of point P are

Answers

The coordinates of point P are(0,1)

Line segment:

A part of line which has 2 end points and it is also can be measured

example:

the objects which has starting and the ending point can be taken for consideration

pencil: which is straight and has a fixed length of about 16-22 cm

coordinates:

The intersection of points in a grid system

example the points(25,10) is 25 units long and 10 units up

A(-4,-1) B(6,4) in the ratio 2:3

x1=-4, x2=6,y1=-1,y2=4,m=2,n=3

x=(mx2+nx1)/m+n

=2*6+3*(-4)/2+3

=12-12/5

=0/5

=0

y=my2=ny1/m+n

=2*4+3(-1)/2+3

=8-3/5

=5/5

=1

to know more about line segment visit

https://brainly.com/question/30072605

#SPJ1

Find the length of MN. Round to the nearest tenth of a foot.

Answers

The length of MN is equal to: 32.2 ft.

What is Pythagorean theorem?

In Mathematics, Pythagorean's theorem is modeled by the following mathematical expression:

a² + b² = c²

Where:

a, b, and c represents the length of sides of a right-angled triangle.

In order to determine the length of MN in right-angled triangle LNM, we would have to apply Pythagorean's theorem.

LN² + MN² = LM²

16² + MN² = 36²

256 + MN² = 1,296

MN² = 1,296 - 256

MN² = 1,040

MN = √1,040

MN = 32.2 ft.

Read more on Pythagorean theorem here: brainly.com/question/15430861

#SPJ1

A child's bank contains 143 coins consisting of nickels and quarters. If the total amount of money is $18.35, find the number of nickels and quarters in the bank.

Answers

Answer:

The number of nickels and quarters in the bank are 87 and 56, respectively.

Step-by-step explanation:

Let's denote the number of nickels in the bank as "n" and the number of quarters as "q". Then we can set up a system of two equations based on the given information:

n + q = 143 (equation 1, representing the total number of coins)

0.05n + 0.25q = 18.35 (equation 2, representing the total value of the coins)

To solve this system, we can use substitution or elimination method. Let's use elimination method here:

Multiplying equation 1 by 0.05, we get:

0.05n + 0.05q = 7.15 (equation 3, obtained by multiplying equation 1 by 0.05)

Subtracting equation 3 from equation 2, we get:

0.2q = 11.2

Dividing both sides by 0.2, we get:

q = 56

Substituting this value of q into equation 1, we get:

n + 56 = 143

n = 87

Therefore, there are 87 nickels and 56 quarters in the bank.

Hopefully this helped you! If not, I'm sorry! If you need more help, ask me! :]

7. Find the x-intercept of the line having
the equation 2x - 5y = 8.

A. -5/2
B. 4
C. -4
D. -2/5
E. 2/5

Answers

Answer:

E

Step-by-step explanation:

My answer

[tex] \frac{2}{5} [/tex]

Anthony and Jacob have some circles. All the circles are the same size. Anthony and Jacob want to completely color twelve circles to make a border for their math project.
Anthony colors six and one-fourth circles before having to go to lunch. Jacob colors five and three-fourths circles before having to go to lunch. Anthony says if he had colored one-fourth of Jacob's last circle instead of one-fourth of his last circle, they would have twelve whole sircles colored. Is Anthony correct?


please show work : - )

50 points!

6 min due..

Answers

Anthοny is accurate, and had he cοlοred a quarter οf Jacοb's final circle rather than a quarter οf his οwn, they wοuld have cοlοred 12 cοmplete circles.

In math, what is a circle?

A circle is a spherical shape that lacks bοrders and edges. In geοmetry, a circle is indeed a clοsed, curved shape having twο dimensiοns.

Tο start, let's cοunt the tοtal number οf circles Anthοny οr Jacοb cοlοred befοre tο lunch:

Anthοny cοlοred 6.25 circles, οr 6 and 1/4 circles.

Jacοb cοlοred 5.75 circles, οr 5 and 3/4 circles.

They cοmbined tο cοlοr a tοtal οf 12 circles (6.25 + 5.75).

Let's nοw imagine that Anthοny cοlοred a quarter οf Jacοb's final circle rather than a quarter οf his οwn. Jacοb cοlοred 5 and 3/4 + 1/4 = 6 circles, while Anthοny cοlοred 6 with 1/4 - 1/4 = 6 circles.

Tοgether, we wοuld have cοlοured 12 circles since 6 + 6 = 12. This is what they desired. Anthοny is therefοre right!

By calculating the tοtal number οf circles that each persοn cοlοured while accοunting fοr the fact that they all cοlοred the very same number οf circles, we can further cοnfirm οur cοnclusiοn:

Anthοny drew 6 circles.

Jacοb filled in 6 circles.

Tοgether, they cοlοred 6 + 6 = 12 circles.

To know more about Circle visit:

https://brainly.com/question/29142813

#SPJ1

Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator. \[ \log \left[\frac{10 x^{2} \sqrt[3

Answers

The  evaluated logarithmic expression is: [tex]\[ \log \left[\frac{10 x^{2}}{\sqrt[3]{y}}\right] = 2\log[10] + 2\log[x] + \frac{1}{3}\log[y] \][/tex]

Expression mentioned in the question :[tex]\[ \log \left[\frac{10 x^{2}}{\sqrt[3]{y}}\right][/tex]. . The first property we will use is the Product Rule , so this   can be expressed as: [tex][ \log \left[\frac{10 x^{2}}{\sqrt[3]{y}}\right] = \log[10x^{2}] + \log[\sqrt[3]{y}] \].[/tex] We can now apply the Power Rule to the first term, which states that the logarithm of a power is equal to the exponent times the logarithm of the base. This can be expressed as: \[ \log[10x^{2}] = 2\log[10x] \]


We can now apply the Quotient Rule to the second term, which states that the logarithm of a quotient is equal to the difference of the logarithms of the numerator and denominator. This can be expressed as: [tex]\[ \log[\sqrt[3]{y}] = \frac{1}{3} \log[y] \].[/tex] Substituting this back into the original equation gives us:[tex]\[ \log \left[\frac{10 x^{2}}{\sqrt[3]{y}}\right] = 2\log[10x] + \frac{1}{3}\log[y] \][/tex]



We can now evaluate this expression without using a calculator. The two logarithmic terms can be rewritten as:[tex]\[ \log[10x] = \log[10] + \log[x] \,  \[ \log[y] = \log[y] \][/tex]
Substituting this back into the original equation gives us: [tex]\[ \log \left[\frac{10 x^{2}}{\sqrt[3]{y}}\right] = 2\log[10] + 2\log[x] + \frac{1}{3}\log[y] \[/tex]

To know more about logarithmic expressions click here:

https://brainly.com/question/24211708

#SPJ11

You run a trail at 7 mph and walk back at 3 mph. If your total time is 2 hours, your round-trip distance is how many miles?

Answers

The answer is 6.3 miles RT

An investor buys stock in a company and in the 12 months after she invests the value of the stock decreases by 30%. By what amount will the value of the stock need to go up from there in order that the price of the stock will be equal to what investor first paid for it?

Answers

The value of the stock needs to go up by 42.86% to be equal to what the investor first paid for it.

Let's say the investor initially paid $100 for the stock. A 30% decrease in the value of the stock would mean it is now worth $70. To bring the value of the stock back up to $100, it needs to increase by $30, which is 42.86% of the current value ($30/$70).

Therefore, the value of the stock needs to go up by 42.86% from its current value for the investor to break even.

Learn more about Stock Prices:

https://brainly.com/question/28539863

#SPJ4

Evaluate. Write your answer as a fraction or whole number without exponents. 3^-1

Answers

Answer:

1/3

Step-by-step explanation:

The exponent -1 indicates that we need to take the reciprocal of the base 3.

So, 3^(-1) = 1/3

Therefore, the answer is 1/3.

Answer:

1/3

Step-by-step explanation:

Rewrite the expression using the negative exponent rule [tex]b^{-n}[/tex] = [tex]\frac{1}{b^{n} }[/tex]

The answer is 1/3

Which equation represents exponential growth?

Answers

Answer:

Option C) is the correct answer.

Find the value of x if ABCD is a square ( given in picture)

Answers

The diagonal of the square bisect the angles. Therefore, the angle x in the square is 60 degrees.

How to find the angle of a square?

A square is a quadrilateral with each angles equal to 90 degrees. The sum of angles in a square is 360 degrees.

The diagonal of a square is perpendicular to each other. It divided the square into two congruent isosceles triangle.

The diagonal of a square bisects the angles of a square. Therefore, the angles are 45 degrees each after bisection.

Hence, let's find the angle x in the square.

Therefore,

180 - 105 + x + 45  = 180

75 + x + 45 = 180

x + 120 = 180

subtract  120 from both sides of the equation

x + 120 - 120 = 180 - 120

x = 60 degrees

Therefore,

x = 60 degrees

learn more on square here: https://brainly.com/question/29165146

#SPJ1

Show that the probability density function for a normally distributed random variable has inflection points at x = μ ± σ.

Answers

At the inflection points, f''(x) = 0, which implies that x = μ ± σ. Therefore the probability density function has inflection points at x = μ ± σ.

The probability density function (PDF) of a normally distributed random variable is defined as:

f(x) = 1/(σ√2π) e-(x - μ)²/2σ²

where μ is the mean,

σ is the standard deviation.

This equation has two inflection points at x = μ ± σ. To show this, we differentiate the equation twice with respect to x.

f'(x) = -(x - μ) / σ² e-(x - μ)²/2σ²

f''(x) = [-(x - μ)² / σ³ - 1] e-(x - μ)²/2σ²

At the inflection points, f''(x) = 0, which implies that x = μ ± σ. Thus, we have proved that the PDF of a normally distributed random variable has inflection points at x = μ ± σ.

Know more about probability density here:

https://brainly.com/question/28705601

#SPJ11

Please help I have a lot of trouble with math and i don't really understand how to do this
Find figure B

Answers

So, the volume of big cone is 226.08 cu ft for this we have to know about volume.

What do you meant by volume?

The area occupied within any three-dimensional solid's borders is known as its volume.

Given, radius of small cone, r = 2 ft

Volume of small cone 25.12 cu ft

[tex]So\ Volume\ of\ small\ cone = \pi rl[/tex]

[tex]25.12 = 3.14 * 2*l[/tex]

[tex]l=\frac{25.12}{3.14\ *\ 2}[/tex]

[tex]l = 4ft[/tex]

Since, cones are similar and bai cone radius is 3 times of small cones then ,

Slant height of big cone = 3 * Slant height of small cone

= 3*4 ft

= 12 ft.

[tex]Volume\ of\ big\ cone = \pi rl[/tex]

[tex]= 3.14*6*12[/tex]

[tex]= 226.08\ cu ft[/tex]

To learn more about Volume, visit:

https://brainly.com/question/463363

#SPJ1

I need help with this question

Answers

The value of cos C is 3/5

What is trigonometric ratio?

Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

In a right angle triangle, the longest side is called the hypotenuse and the other two sides are called opposite and adjacent. The line facing the acute angle( tetha) is the opposite. The ratio of the sides with the acute angle are called trigonometric ratio.

sin(tetha) = opp/ hyp

cos( tetha) = adj/ hyp

tan(tetha) = opp/adj

In the triangle, using angle C,

opposite = 4

adjascent = 3 and hypotenuse = 5

cos (C) = 3/5

therefore the value of cos (C) = 3/5

learn more about trigonometric ratio from

https://brainly.com/question/24349828

#SPJ1

Other Questions
WHAT IS YOUR RESTING HEART RATE?.........WHAT IS 60% OF YOUR MHR?WHAT IS 85% OF YOUR MHR?WHAT IS 95% OF YOUR MHR?WHAT IS 100% OF YOUR MHR? a newly licensed nurse would like to work in a hospital that is innovative in the provision of nursing services. the nurse should apply to which institution? true/false. to apply the approach to ethics, you need to weigh how various courses of action would affect different people and choose the action that will provide the greatest benefit to the most people. Suppose that the Local sales tax rate is 4% and you purchase a car for 24,500. A. How much Tax is paid? B. What is the cars total cost? How did the government use racial classification to establish and maintain apartheid? (Born a Crime) How reliable is the information in the song Vietnam by Jimmy Cliff? What is MOST likely demonstrated by the arrows in this image?Illustration of the Muller-Lyer Illusion. On the left is an arrow with two tails and on the right side is an arrow with two heads.People always interpret the same visual images the same way.Depth cues have no effect on an individuals visual perception.Correct Sometimes people perceive the same image in different ways.Subliminal messages can be powerful influences on people. Which statement about fossil fuels is true?_____________________________________(any wrong/spams answers will be reported)_____________________________________(A) They are found deep within the earth.(B) They do not cause pollution.(C) They are renewable. Questions are in the photo. Thank you very much! Why did the Aztec people build pyramids?to entertainto store waterto bury the deadto honor the gods 40.532 g of an unknown compound X is dissolved in 351.11 mL. What is the molarity of X? Here is some information to determine the identity of X. When 1.00g of X is dissolved in water and allowed to react wtih AgNO3, all the chlorine in X precipitates and 1.95g of AgCl is collected. When 1.00g of X undergoes complete combustion, 0.900 g of CO2 and 0.735 g of H2O were collected. The empirical and molecular formula are identical. Compound X only contains carbon, hydrogen, nitrogen, and chlorine. A 60kg resident jumps from the first floor of a burning house. His velocity just before landing on the ground is 6 ms-.(a) calculate the impulse when his legs hit the ground Rewrite the sentence, placing a colon or commas correctly. The circus had acts such as juggling tumbling and lion taming. In a large population of adults_ the mean IQ is 119 with standard deviation of 18_ Suppose 50 adults are randomly selected for market research campaign: (Round to 2 decimal places for all z-values and round all other answers t0 decimal places, if needed ) (a) The distribution of IQ is exactly normal (b) The distribution of the sample mean IQ is approximately normal with mean of and standard deviation of (c) The probability that the sample mean IQ is less than 117 is (d) The probability that the sample mean IQ is greater than 117 is (e) The probability that the sample mean IQ is between 117 and 123 is Connect and Reflect Reflect on the assessment by answering these questions: What surprised you? How did this activity help you better understand the contradictions present during the founding of the US? Did it change your thinking about current events in any way? Note what you learned and what challenged you. If x = 4 units, y = 5 units, and h = 6 units, find the area of the rhombus shown above using decomposition. question 2 of 10: pricing items on your menu takes a thoughtful process to determine exact costs for food and labor. you are dealing with perception, so it is critical that you pay close attention to what you are doing. how would you determine your prices? a) rely on what other places are charging for the same food items. b) give people more than what they think they should get in portions and they will be happy. c) carefully determine your plate costs of each and every item, as well as beverages. d) pick pricing that will allow you to pay your expenses to run the business. "The overall goal of the People Plan in 2018 remains much as it was in 2016: to ensure that the department has skilled,talented, diverse and high-performing people, who are proud to work for MHCLG and are supported and trusted byempowering and inclusive leaders".In light of this statement, provide an analysis of the best practices used by the Ministry of Housing, Communities and LocalGovernment (MHCLG) in managing human resources, that you view as suitable recommendations for other organisations toadopt in order to achieve organisational goals and strategy. The discussion should outline why you believe these practicesare relevant in supporting the organisational strategy. 2. If the price elasticity of demand for a good is \( -2.5 \), the demand is: a) perfectly inelastic b) inelastic c) unit elastic d) elastic The Street Division of Labrosie Logistics just started operations it purchased depreciable assets costing $36.1milition and having a four-year expected ilfe, after which the assets can be balvaged for $7.22 million. In addition, the division has $361 million in assets that are not depreciable. After four years, the division wili have $361 million avallable from these nondepreciable assets. This means that the division has invested $722 milion in asseti with a salvage value of $43.32 million. Annual operating cash flows are $121 million. In computing ROI, thit division uses end of -year asset values in the denominator. Depreciation is computed on a straight-iline basis, tecognizing the salvage values noted lgnore taxes. In computing ROI, this division uses end of year asset values. Assume that all cash flows increase 10 percent at the end of each year. This has the following effect on the assets replacement cost and annual cash flows: Depreciation is as follows. Note that "accumulated" depreciation is 10 percent of the gross book value of depreciable assets after one year, 20 percent after two years, and so rorth Requlred: a. \& b. Compute Rof using histonical cost, net book value and gross book value. c. \& d. Compute Rol using current cost, net book value and gross book value. Complete this question by entering vour answers in the tabs below. Compute ROI using current cost, net book value and gross book value. Note: Enter your answers as a percentage rounded to 2 decimal place (i.e., 32.10),