Determine when the function is positive, negative, increasing, or decreasing.
Then describe the end behavior of the function.

Answer:

19 and 21|

Step-by-step explanation:

a + (a+2) = 40

2a + 2 = 40

2a = 40 - 2

2a = 38

a = 38/2

a = 19

a+2 = 21

Check:

19 + 21 = 40

Answer:

it's decimal value then it is 11.1803399.

The integer close to it is 11

Step-by-step explanation:

let's square this :

4² × 5 = 16 × 5 = 80

the closest squared integer is 81 (9²).

so, the closest integer to 4×sqrt(5) is 9.

According to the SSS Postulate, two triangles are congruent if three of one triangle's sides are congruent with three of another triangle's sides.

A postulate is an assertion that is not backed by any evidence. Axiom is another name for a postulate. For instance, you would believe Pam if she said that all of her siblings were at least five feet one tall since you are aware of her height and that of all of her siblings, who are all taller than her.

When two figures or objects in geometry have the same shapes, sizes, or are mirror images of one another, they are said to be congruent.

Shapes that are identical to one another are said to be congruent. Both the matching sides and the corresponding angles match. We must examine all of the shapes' angles and sides in order to accomplish this. Two shapes that are similar to one another can be stacked perfectly.

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Answer:6/13/3

Step-by-step explanation:look at how the year’s difference are

a ) The expression for the radius of the circle = r = 2x + 3

b ) The least possible value of radius is - 1.5

Given : Area of the circle = 4πx² + 12πx + 9π

a) The expression for the radius of the circle = r = 2x + 3

we can find this out by middle term split

we can write the area of the circle as

4πx² + 12πx + 9π

4πx² + 6πx + 6πx + 9π

this implies 2πx ( 2x + 3 ) + 3π ( 2x + 3 )

π( 2x + 3 ) ( 2x + 3 )

thus the radius expression is 2x + 3

b ) The least possible value of radius is 2x + 3 = 0

this implies 2x = - 3

x = - 1.5

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Answer:

Step-by-step explanation: a square x b square

The probability that the phone calls would differ from the population proportion by more than 3% is 0

From the question, the given parameters about the distribution are

The mean is calculated as

Mean = np

So, we have

Mean = 8% * 494 = 39.52

The standard deviation is calculated as

Standard deviation = √np(1 - p)

So, we have

Standard deviation = √494 * 8% (1 - 8%) = 0.77

The z-score is calculated using the following formula

[tex]z = \frac{\bar p - p}{\sqrt{p(1 - p)}/n}[/tex]

Substitute the given parameters in the above equation

[tex]z = \frac{8\% - 3\%}{\sqrt{8\% * (1 - 8\%)}/494}[/tex]

Evaluate

z = 90.9

The probability is then calculated as:

P(x > 3%) = P(z > 90.9)

From the z table of probabilities, we have;

P(x > 3%) = 0

Hence, the probability is 0

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The lower and upper limit of the 95% confidence interval is 183.2 and 196.0 unit.

What is a confidence interval ?

When you run your experiment again or resample the population in the same way, you can expect your estimate to fall within a certain range of values a certain percentage of the time. This is known as the confidence interval.

Main Body:

Given in question :

x- bar = 189.6

standard deviation = 10

C.I. = 95% =0.95

N=12

so, degree of freedom (D.F) = N-1 = 11

confidence  level (α) = (1- C.I.)/2

                                  = 0.025

according to t- distribution table for d.f = 11 and α= 0.025  , my result is 2.201

Now dividing standard deviation by square root of samples, we get

= 10/√12= 2.887

Lower limit = Mean - 2.201*2.887

                  = 189.6- 6.354

                  = 183.246

Upper limit = Mean + 2.201*2.887

                  = 189.6 + 6.354

                  = 195.954

Hence the result is 183.2 and 196.

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Answer:

d [tex]\frac{-4}{3}[/tex]

Step-by-step explanation:

change in y over the change in x

[tex]\frac{-2-2}{1- -2}[/tex] = [tex]\frac{-4}{3}[/tex]

Step-by-step explanation:

Andy and Emily each go to a hardware store to buy wire. The table shows the cost y in dollars for x inches of the wire they need. Andy needs 24 feet of the wire. Emily needs 15 yards of the wire. How much will each of them spend for wire?​

Looking at your chart:

cost/length in inches

6/100 = $0.06 per inch

8.1/135 = $0.06 per inch

9.6/160 = $0.06 per inch

10.8/180 = $0.06 per inch

So the rate stays at a constant rate of $0.06 per inch.

Andy needs 24 feet or 288 inches at a constant rate of $0.06 per inch.

= 288 * $0.06  

= $17.28

________________________________

Emily needs 15 yards or 540 inches at a constant rate of $0.06 per inch.

= 540 * $0.06  

= $32.40

Answer:

Step-by-step explanation:

The ordered pairs of the function, h(x) = 3x², are (1,3) and (-1,3).

According to the question,

We have the following information:

h(x) = 3x²

Now, we will look at the options to know the correct option of ordered pairs.

Now, in the options, there are only two values of x (1 and -1). So, we will solve the given function using these two values and we will find the value of h(x).

h(x) = 3x²

h(1) = 3*1*1

h(1) = 3

So, the first ordered pair is (1,3).

When x = -1:

h(x) = 3x²

h(-1) = 3*-1*-1

h(-1) = 3

Now, the second ordered pair of the function is (-1,3).

Hence, the correct options are A and C.

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The generalized rule of the indices to be negative fraction can be written as [tex]a^{-m/n} =(\sqrt[n]{a})^{-m}[/tex].

Index (indices) in Maths is the power or exponent which is raised to a number or a variable.

An algebraic expression is a quantity made up of symbols and processes + - / and multiplication Expressions utilizing indices are made simpler using the laws of indices.

Let's consider a negative fraction exponent as, [tex]a^{-m/n}[/tex]

[tex]a^{-m/n}=1/a^{m/n}[/tex]

Since,[tex]a^{-m/n} =(\sqrt[n]{a})^{-m}[/tex]

Therefore, the above expression converts as,

[tex]a^{-m/n} =1/(\sqrt[n]{a})^{-m}[/tex]

[tex]a^{-m/n} =(\sqrt[n]{a})^{-m}[/tex]

Hence "The generalized rule of the indices to be negative fraction can be written as  [tex]a^{-m/n} =(\sqrt[n]{a})^{-m}[/tex].".

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The linear function that is graphed on the grid is g(x) = (15/2)x + 45   , the correct option is (d) .

In the question ,

a linear function graph is shown ,

we have to find that linear function .

So , From the given graph we can see that

the graph passes from the points (2 , 60) and (6 , 90)

in order to find the equation , we first need to find the slope .

slope = (90 - 60)/(6 - 2)

= 30/4

= 15/2

So , the equation of the line passing through the points (2 , 60) and slope 15/2 is

(y - 60) = 15/2(x - 2)

y - 60 = (15/2)x - 15

Adding 60 to both the sides ,

we get

y - 60 + 60 = (15/2)x - 15 + 60

y = (15/2)x - 15 + 60

y =  (15/2)x + 45

function is (15/2)x + 45

Therefore , The linear function that is graphed on the grid is g(x) = (15/2)x + 45  .

The given question is incomplete , the complete question is

Which linear function is graphed on the grid shown below ?

(a) g(x) = (2/15)x - 6

(b) g(x) = (2/15)x + 45

(c) g(x) = (15/2)x - 6

(d) g(x) = (15/2)x + 45

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The value of d in the expression, 4d/5+3 = -2-d/5, is -5.

According to the question,

We have the following expression:

4d/5+3 = -2-d/5

Now, moving the terms with the same variables on the left hand side will result in the change of the sign from minus to plus:

4d/5+d/5 -3 = -2

5d/5+3 = -2

d+3 = -2

Now, moving 3 from the left hand side to the right hand side will result in the change of the sign from plus to minus:

d = -2-3

We know that two negative integers are added but the sign before the result remains negative.

d = -5

Hence, the value of d is -5.

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Answer:

[tex]f(x)=-log_{3}(-x)[/tex]

Step-by-step explanation:

Based on the points given on the graph, I would say this is a Log function, reflected across both x- and y-axes.

And given the point (-3, -1), it must be [tex]-log_{3}(-x)[/tex]

Based on the given equation and the given value of (), the value of 5() from the equation is 490

If

() = 94 + 2 + 2

The equation can be solved by substituting the value of () into 5()

Substituting is the method of inserting the known value of a variable into an equation to solve for the value of the equation.

Then,

(5)()

= 5(94 + 2 + 2)

= 5(98)

= 490

So therefore, the value of 5() is given by 490.

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Answer:

  (b)  15, 36, 39

Step-by-step explanation:

You want to know which sets of segment lengths could form a right triangle.

For segments to form a right triangle, the lengths must satisfy the triangle inequality and the Pythagorean theorem. The latter condition can often be determined by looking at the reduced ratios of the lengths, and comparing to known Pythagorean triples.

The ratio of lengths is 3:6:7. There are no integer side lengths that will form a right triangle when one of them is double another. Not a right triangle.

The ratio lengths is 5:12:13. These numbers are a common Pythagorean triple, so will form a right triangle.

The ratio of the smaller two numbers is 3:4. In order for these to form a right triangle, they must be part of a triangle with ratios 3:4:5. That would be 15, 20, 25. The side length 29 is too long for a right triangle. Not a right triangle.

The two short sides are too short to reach the ends of the long side. These lengths will not form a triangle.

__

Additional comment

The table in the attachment computes a²+b²-c². When that value is 0, the Pythagorean theorem is satisfied, and the triangle is a right triangle. Positive numbers indicate an acute triangle; negative numbers indicate an obtuse triangle.

The Pythagorean triples that came into play in this answer are {3, 4, 5} and {5, 12, 13}. Other triples commonly seen are {7, 24, 25} and {8, 15, 17}.

The number of solutions in the equation 3x² + 4x - 5=0 is (b) two real solutions

The equation is given as:

3x² + 4x - 5=0

A quadratic equation is represented as:

ax² +bx + c=0

Where the discriminant is:

d = b² - 4ac

So, we have:

d = 4² - 4 * 3 * -5

Evaluate

d = 76

If the discriminant is greater than 0, then the equation has 2 real roots.

Hence, the number of solutions is (b) two real solutions

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Answer:

Step-by-step explanation 2/3 is the answer :

The required probability, that she chooses low-fat yogurt is 2/3.

Given that, a cooler is filled with containers of yogurt. Some of the containers have low-fat yogurt and some have non-fat yogurt. There are three flavors for each type of yogurt, as shown in the table.

Probability can be defined as the ratio of favorable outcomes to the total number of events.

Here,

From the given,
Sample space = 24

Low Fat =16
Non-fat = 8

The probability that she chooses low-fat yogurt
= 16/24
= 2/3

Thus, the required probability, that she chooses low-fat yogurt is 2/3.

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The Compound Interest is $7,290.00.

In order to calculate compound interest, multiply the principal of the original loan by the annual interest rate multiplied by the number of compound periods minus one.

Given:

P= 6250

T= 2 years

r = R/100

r = 8/100

r = 0.08 rate per year,

Then solve the equation for A

A = P[tex](1 + r/n)^{nt[/tex]

A = 6,250.00[tex](1 + 0.08/1)^{(1)(2)[/tex]

A = 6,250.00(1 + 0.08)²

A = $7,290.00

Hence, The Compound Interest is $7,290.00.

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Answer:

the relationship between two quantities is a proportional relationship, this relationship can be represented by the graph of a straight line through the origin with a slope equal to the unit rate. For each point (x, y) on the graph, is equal to k, where k is the unit rate.

The system of equations has its solutions to be (0, 3)

From the question, the system of equations is represented on the graph

On the graph, we have the following representations

Say the functions are f(x) and g(x)

To determine the solution to the system of equations, we set both equations equal

i.e. f(x) = g(x)

This in other words mean that we determine the coordinates of the points where the graphs intersect

In this case, they intersect at point (0, 3)

This represents the solution

Hence, the solution to the system of equations is (0, 3)

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[tex] = ( \sin(180 + 45) )^{2} - ( \cos(180 + 90) )^{2} + ( \frac{ \sqrt{3} }{1} )^{2} \\ = ( - \sin(45) )^{2} - ( - \cos(90) )^{2} + 3 \\ = ( - \frac{1}{ \sqrt{2} } ) ^{2} - ( \frac{0}{1})^{2} + 3 \\ = \frac{1}{2} - 0 + 3 \\ = \frac{1}{2} + 3 \\ = \frac{7}{2} [/tex]

ATTACHED IS THE SOLUTION

Answer: if you multiply you will end up with 675

Step-by-step explanation: