2x² + 5x – 6 when x = 3 I need help

Answers

Answer 1

Answer:

27

Step-by-step explanation:

[tex]3^2 = 9\\2\cdot \:9+5\left(3\right)-6\\2 \cdot 9 = 18\\18+5\left(3\right)-6\\5 \cdot 3 = 15\\18+15-6\\18 + 15 = 33\\33 - 6 = 27\\= 27[/tex]

Answer 2
Answer:

[tex] \bf \implies27[/tex]

Step-by-step explanation:

[tex] \bf \leadsto{2x }^{2} + 5x - 6 \\ \bf \leadsto 2 {(3)}^{2} + 5(3) - 6 \\ \bf \leadsto 2(9) + 15 - 6 \\ \bf \leadsto18 + 15 - 6 \\ \bf \leadsto18 + 9 \\ \bf \leadsto27[/tex]


Related Questions

find ∠rqt (4x+15) (10x-3)

Answers

The measure of angle RQT is 63°

Calculating angles

From the question, we are to determine the measure of angle RQT.

From the diagram,

We can observe that ∠PQS and ∠SQT form a linear pair

Thus,

∠PQS + ∠SQT = 180°

(4x + 15)° + (10x - 3)° = 180°

First, determine the value of x

4x + 15 + 10x - 3 = 180

4x + 10x = 180 - 15 + 3

14x = 168

x = 168/14

x = 12

In the diagram,

∠RQT and ∠PQS are vertically opposite

From the given information,

∠PQS = (4x + 15)°

∴ ∠RQT = (4x + 15)°

Substitute the value of x

∠RQT = (4(12) + 15)°

∠RQT = (48 + 15)°

∠RQT = 63°

Hence, the measure of angle RQT is 63°

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Please help?!?!?! Determine the length of BD, given by x in the figure. Give your answer to two decimal places.

Answers

Answer:

3.71

Step-by-step explanation:

AC² + BC² = AB²

3² + 6² = AB²

9 + 36 = AB²

AB = √45

AB = 3√5

AB = AD + BD

3√5 = 3 + BD

BD = 3√5 - 3

BD = 3.71

If a(x) = 3x + 1 and b(x) = √x-4, what is the domain of (bºa)(x)?

Answers

SOlution : Domain of (bºa)(x) = [4, ∞]

The term domain is most commonly used to describe the set of values D for which a function (map, transformation, etc.) is defined. For example, a function f(x) that is defined for real values x in R has domain R, and is sometimes said to be "a function over the reals." The set of values to which D is sent by the function is then called the range.

The domain (in its usual established mathematical sense) of a probability density function (and therefore also its distribution function) is available with the undocumented Wolfram Language command DistributionDomain[dist].

The meaning of "domain" in topology is a connected open set.

Another meaning of "domain" is what is more properly known as an integral domain, i.e., a ring that is commutative under multiplication, has an identity element, and no divisors of 0.

In the algebra of the function that is (f ± g)(x), (fg)(x) and (f/g)(x) the domain of the function will be an intersection of the domain of the functions f and g

Here the domain of the product of the function is asked thus the required domain will be an intersection of the domain of the function a and b.

Given a(x) = 3x + 1 ⇒ Domain, D1 = R

b(x) = √(x - 4) ⇒ Domain, D2 = [4, ∞]

Now, Domain of (b*a)(x) = Domain b(x) ⋂ Domain a(x)

= D2 ⋂ D1

= [4, ∞] ⋂ R

= [4, ∞]

Domain of (bºa)(x) = [4, ∞]

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Sean decides to start a small business creating and selling outdoor yard games. It will cost Sean $50 to make each game as well as an initial cost of $300 to purchase the needed equipment and supplies. He plans to sell each game for $85. The system of equations below models the cost and revenue for Sean's outdoor yard games where x represents the number of games and y represents the amount, in dollars.

Answers

The break even point obtained for the Sean's business is (60/7, 5100/7).

How to describe the linear equation in two variables?A linear equation in 2 variables is one that is written in the form ax + by + c = 0, where a, b, and c are real numbers and thus the coefficients of x and y, i.e. a and b, are not equal to zero. For example, 12x+8y = 9 and -x+8y = 3 are two-variable linear equations.

Part of the question is missing where x denotes a number of games and y denotes the monetary value.

y = 50x + 300

y = 85x

Estimate Sean's business's break-even point.

Calculate the same break even point by following method;

The functions are as follows:

The functions are given as:

Cost: y = 50x + 300   ......equation 1

Revenue: y = 85x       .......equation 2

For the value at break even point;

Cost = Revenue

Thus, equating 1 and 2.

85x = 50x + 300

simplifying;

35x = 300

Dividing both sides by 35

x = 60/7

Put x = 60/7 in equation 2

y = 85 × 60/7

y = 5100/7

Therefore, the break even point are obtained as (60/7, 5100/7).

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The complete question is-

Sean decides to start a small business creating and selling outdoor yard games. It will cost Sean $50 to make each game as well as an initial cost

of $300 to purchase the needed equipment and supplies. He plans to sell each game for $85,

The system of equations below models the cost and revenue for Sean's outdoor yard games where x represents the number of games and y represents the amount, in dollars.

y = 50x + 300

y = 85

Let the graph of g be a translation 4 units left followed by a horizontal shrink by a factor of 1/3 of the graph of f(x)=x²+x. Write a rule for g

Answers

The transformed function is:

g(x) =  (3*(x + 4))² +  (3*(x + 4))

How to write the transformed function?

Here we have the function:

f(x) = x² + x

Now we want to apply a translation of 4 units to the left, followed by a horizontal shrink by a factor of 1/3.

First, the translation is written as:

g(x) = f(x + 4)

Now the shink will give:

g(x) = f( 3*(x + 4))

Replacing the actual function we will get:

g(x) =  (3*(x + 4))² +  (3*(x + 4))

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How much of the daily value must a snack meet in order for the fda to consider it a ""good source"" of nutrients? 10 percent to 19 percent 10 percent to 19 percent 25 percent to 35 percent 25 percent to 35 percent 30 percent to 40 percent 30 percent to 40 percent 50 percent to 59 percent

Answers

10 percent to 19 percent of daily value must a snack meet in order for the FDA to consider it a ""good source"" of nutrients.

The Food Manufacturer or Distributor is responsible for ensuring their food product labeling complies with FDA regulations. FDA will not review or approve food labels. If the labels do not comply with FDA requirements, the FDA will consider the product as misbranded and may take regulatory action, including detention.

LMG's Label review service will help you confirm your product labels comply with FDA requirements. We have designed three types of label review services; you can choose the best service which fits your products.

( Food Label Compliance : FDA , Food and Drug administration)

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need help solving this

Answers

If you can't answer this question

This should be correct

84 x 8 + the amount of 3 =

Answers

guathmath always comes thru so maybe try this ???

3. An electrician earns $24 an hour for a regular work week (40) hours. She earns time and a half for overtime. The weekly wage function is
(24h
0 w(h) = (36(h-40)+960 h> 40
How much will she earn if she works 38.5 hours this week?
0050

Answers

She will earn $924 if she works 38.5 hours this week

How much will she earn if she works 38.5 hours this week?

The function is given as

w(h) = 24h, if h < 40

w(h) = (36(h-40)+960 h> 40

If she works 38.5 hours this week, then

h < 40

So, we use

w(h) = 24h

This gives

w(38.5) = 24 * 38.5

Evaluate

w(38.5) = 924

Hence, she will earn $924 if she works 38.5 hours this week

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[tex](800)×(3×10 −1 )= ?[/tex]

Answers

The answer is 23200.

BODMAS is an acronym that stands for Bracket, Order, Division, Multiplication, Addition,  Subtraction. In certain regions, a synonym for BODMAS is used: PEMDAS (parentheses, exponents, multiplication, division, addition, and subtraction). It describes the order of operations  performed when solving an equation. According to the BODMAS rule, if an expression contains parentheses ((), {}, []), first break or simplify the parentheses, then "order" (meaning exponentiation, root, etc.),  division, multiplication , addition and subtraction from the left.

By using BODMAS , we will first simplify the bracket term.

The bracket term is [tex](3\times10-1)[/tex]

After , bracket we will operate the multiplication term which is given by

     [tex]30-1[/tex]

Now , we will use the subtraction operation .

   [tex]29[/tex]

On solving the bracket , we get 29 .

Now we will multiply 800 by 29 ,we get

[tex]800\times29=23200[/tex]

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The complete question is mention below :

  Solve  [tex]800(3\times10-1)[/tex]

Bruce spent $30 on lunch. If he had $55 in his wallet, what percent of his money did he spend on lunch?

Answers

Answer:

your answer is 54%

3. Based on the graph of the function y = g(x) shown below, answer the following questions.
y
(a) Evaluate g (-2), g(0), g (3) and g (7).
hogy
Joo 1 023
(b) What values of x solve the equation g(x)=0
(c) Graph the horizontal line y = 2 on the grid
above and label.
wirb
X
(d) How many values of x solve the equation
g(x)=2?

Answers

The values of x that solve the equation g(x) = 0 are x = -3, 1, 5 and 7 and there are four values of x that solve the equation g(x) = 2

How to answer the  questions based on the graph of the function y = g(x) shown?

The graph represents the given parameter

(a) Evaluate g (-2), g(0), g (3) and g (7)

To do this, we take the function value at the given value of x

The function g(-2) means

x = -2

So, we have

When x = -2, g(x) = -3

This means that g(-2) = -3

The function g(0) means

x = 0

So, we have

When x = 0, g(x) = -3

This means that g(0) = -3

The function g(3) means

x = 3

So, we have

When x = 3, g(x) = 4

This means that g(3) = 3

The function g(7) means

x = 7

So, we have

When x = 7, g(x) = 0

This means that g(7) = 0

(b) What values of x solve the equation g(x) = 0

On the graph, we have the following values of x at g(x) = 0

x = -3, 1, 5 and 7

Hence, the values of x that solve the equation g(x) = 0 are x = -3, 1, 5 and 7

(c) Graph the horizontal line y = 2 on the grid above and label.

See attachment

(d) How many values of x solve the equation g(x)=2

Using the line in (c), the line crosses the curve four times at y = 2

Hence, there are four values of x that solve the equation g(x) = 2

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the number between -4/9 and -7/8

a) -5/-6
b) 5/-6
c) -5/6
d) 4/-6​

Answers

Answer:

Just from looking at the distorted and wrong places to put the minus sign, the answer is option C.

❌First option (A): there is no way a minus sign will be in the numerator and denominator, If so they would cancel out to be a positive number.

❌second option(B): there is no way a minus sign would stay in the denominator, it always stays in the numerator (even if it's in the denominator you take it up to the numerator).

❌ Fourth option (D): again no way a minus sign stays in the denominator so this option is wrong.

✅ Option (C): The minus sign is in the right place which is the numerator.

you see how I solved this problem without writing on paper or anything like that, sometimes you can find your answers by spotting abnormalities in the options you're given.

I believe this will definitely helpAce that test

Good luck ✅

now examine |a + bi| and complete the definition below. the absolute value of any complex number a + bi is the from (a, b) to (0, 0) in the complex pl

Answers

According to the given statement the absolute value of just about any complex number Ia + biI seems to be the distance between (a, b) and (0, 0) in the complex plane is √(a² + b²).

What specifically is modulus?

After dividing one number by another, the modulo operation yields the remainder or signed remainder of the division. A modulo n seems to be the remainder of something like the Euclidean division on a by n, where an is the dividend and n is the divisor, given two positive numbers a and n.

What is the purpose of modulus?

The modulus operator can be used in a variety of situations. It is frequently used to decrease a randomly generated number to a randomly generated number in a smaller range, and it may also rapidly tell you if one integer is a factor of another.

According to the given information:

The modulus of any complex number is its absolute value, regarding which there is a modulus formula. √(a² + b²).

where a and b are integers

Please see the attached file for the complex plane of the provided points (a,b) (0,0).

The separation of two points (x1 ,y1) and (x2 ,y2) will be:

√((x1 - y1)² + (x2 - y2)²)

We need to calculate the distance between (a,b) because (0,0)

We will obtain by replacing the numbers in the distance formula.

√((0 - a)² + (0 - b)²).

The given statement the absolute value of just about any complex number a + bi seems to be the distance between (a, b) and (0, 0) in the complex plane is √(a² + b²).

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I understand that the question you are looking for is:

now examine |a + bi| and complete the definition below. the absolute value of any complex number a + bi is the from (a, b) to (0, 0) in the complex plane.

Answer: distance , positive real on edge

Step-by-step explanation:

What is the surface area of a pyramid with measurements of 4cm by 4cm by 7cm

Answers

Answer:

Area of one face of pyramid equal 18.55

Step-by-step explanation:

Area of pyramid equal 18.55x4=74.2

Sketch a graph of f(x)

Answers

The graph that depicts the graphical representation of the function F(x) is attached below

This is further explained below.

What is a graph?

Generally, The collection of ordered pairings where "f(x)=y" exists is the network of a function f.

These pairs are Centroid of locations in two-dimensional space and so constitute a subset of this plane in the typical situation when x and f(x) are real integers.

In conclusion, is a collection of discrete or continuous points that together form a curve or surface and each of which corresponds to a certain function's value. also known as a linear graph.

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A rectangular garden has a length of 7 feet and a width of 6 feet what is the area of the garden

Answers

Answer:

42

Step-by-step explanation:

L*W= Area

7*6=42

Hope this helps! :)

how do u work out 1/2(2y+4)=-6

Answers

Answer:

The answer is y = -8

Step-by-step explanation:

You distribute,

1/2 x 2y = y

1/2 x 4 = 2

y+ 2 = -6

(then you subtract 2)

y=-8

If you would like to check, just put -8 into the equation in place of y

So it would look like this: 1/2(2 x -8 + 4) = -6

If it equals -6 then it means your answer is correct

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

A fundamental distinction between trend projection and linear regression is that:____.

Answers

A fundamental distinction between trend projection and linear regression is that: in trend projection the independent variable is time; in linear regression, the independent variable need not be time.

We need to find the fundamental distinction between trend projection and linear regression.

What is trend projection?

The trend projection method is based on the assumption that the factors liable for the past trends in the variables to be projected shall continue to play their role in the future in the same manner and to the same extent as they did in the past while determining the magnitude and direction of the variable.

Linear regression: Linear regression analysis is used to predict the value of a variable based on the value of another variable. The variable you want to predict is called the dependent variable. The variable you are using to predict the other variable's value is called the independent variable.

A fundamental distinction between trend projection and linear regression is that in trend projection the independent variable is time; in linear regression, the independent variable need not be time but can be any variable with explanatory power.

Therefore, a fundamental distinction between trend projection and linear regression is that: in trend projection the independent variable is time; in linear regression, the independent variable need not be time.

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13. For a party, Bob's Pizza charges $12 for each
supreme pizza while Mike's Pizzeria charges based
on the equation y = 8x + 20. How many pizzas
must you order for the price to be the same?

Answers

The number of pizzas you must order for the price to be the same is 5

How many pizzas must you order for the price to be the same?

Bob's Pizza charges = $12 for each supreme pizza

This can be represented as

y = 12x

For Mike's Pizzeria, we have

y = 8x + 20

Substitute y = 12x in y = 8x + 20

12x = 8x + 20

Evaluate the like terms

4x = 20

Divide by 4

x = 5

Hence, the number of pizzas you must order for the price to be the same is 5

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HELP ME ASAP FOR MATHS

Answers

Answer:5 higher and 1 horizontal

Step-by-step explanation:

WILL MARK
PLEASE HURRYYY

What is the rate of change of the function?
-3
-1/3
1/3
3

Answers

Answer:

-1/3

Step-by-step explanation:

what is the radical expression that is equivalent 27 ⅕?

Answers

Answer:

  [tex]\sqrt[5]{27}[/tex]

Step-by-step explanation:

27^(1/5) = [tex]\sqrt[5]{27}[/tex]

If a population consists of 5,400,000 people and a census is taken, how many
people are sampled?

Answers

Answer: 54,000,000

Step-by-step explanation: hope this helps

Approximately 5,400,000.


When you look at a pencil in water, it looks bent. This illusion is due to refraction, or the bending of light when it moves from one substance to the next.

b. What is m∠2? Classify this angle as acute, right, or obtuse.

Answers

The measure of angle 2 from the given figure is an acute angle.

Given that, when you look at a pencil in water, it looks bent. This illusion is due to refraction, or the bending of light when it moves from one substance to the next.

What is refraction?

Refraction is the "bending" of light (or any electromagnetic wave) when entering a different medium.

In the given figure, the three angles, are angle 1, angle 2 and angle 3.

Angle 1 and 2 are formed with the surface of the water. Angle 1 in the medium air and angle 2 is in the medium water.

From the figure, given below we can see that angle 2 is less than 90° and greater than 0°.

Therefore, the measure of angle 2 from the given figure is an acute angle.

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For a certain type of computers, the length of time between charges of the battery is normally distributed with a mean of 50 hours and a standard deviation of 15 hours. john owns one of these computers and wants to know the probability that the length of time will be between 50 and 70 hours? choose one.

Answers

The probability that the length of time will be between 50 and 70 hour is  0.4082.

What is normal distribution?

Height is a simple instance of an event that describes a normal distribution: most people are of medium height, the proportions of people who are taller and shorter than average are roughly equal, and a very small (but still roughly equivalent) proportion of people either are extremely tall or extremely short.

Now, as per the given question;

Let t be the variable representing the length of time (t = 50)

As a result, the mean of the battery is 50 and the standard deviation is 15.

Thus, μ = 50 (mean) σ = 15 (standard deviation)

Now, we must calculate the probability that t is between 50 & 70.

Thus, the probability  P (50 < t < 70)

The z-value will be calculated as;

Z = (t – μ) / σ

Substitute the values,

Z = 50 – 50 / 15

Z = 0

Now, for the time; t = 70

Z = 70 – 50 / 15

Z = 1.33

Thus, the probability is;

P(50 < t < 70) = P(0 < z < 1.33)

So, the area to left of Z

= 1.33 – area to the left of z = 0

= 0.9082 – 0.5

P(50 < t < 70) = 0.4082

Therefore, the probability that the length of time will be between 50 and 70 hours is 0.4082.

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Find the 66th term of the arithmetic sequence -10, 7, 24, ...

Answers

Answer:  1095

========================================

Explanation:

[tex]a_1[/tex] = -10 is the first term

d = 17 is the common difference. We add this amount to each term to get the next one. Eg: -10+17 = 7

We want to find the 66th term, so we'll use n = 66

Plug these values into the nth term arithmetic sequence formula below.

[tex]a_n = a_1 + d(n-1)\\\\a_{66} = -10 + 17(66-1)\\\\a_{66} = 1095\\\\[/tex]

The 66th term is 1095

Answer:

The answer is 1095.

66th term = 1095

Step-by-step explanation:

an = a1 + (n − 1)d

= -10 + (66 - 1) (17)

I did it on calculator.

It equals to = 1095

if a+1=b+2=c+3=d+4=a+b+c+d+5 what is a+b+c+d

Answers

10 or 15- this is confusing

Midpoint Find the midpoint of the line segment with the endpoints A and B. A(4,10); B(8,6) The midpoint of the line segment is. (Type an ordered pair.)​

Answers

Answer:

Step-by-step explanation:

A(2,6); B(10,8)

whats the midpoint of the segment?

What is the missing product?

4 times 6 equals an empty box, shown horizontally.

Responses


10

12



24


46

Answers

Answer:

The answer is 24

Step-by-step explanation:

6×4 =24

We can also further simplify it by everything down.

we could use

(3×4) + (3×4)

12 + 12

=24

and we can do the same for

(6×2) + (6×2)

12 + 12

= 24

Hope this helps!

Answer:

4 · 6 = 24

➲ I hope this helps.

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