Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage rate of increase or decrease.
y=270(1.86)^x
y=270(1.86)
x

Answer:

thz for my points back lol.///.//

Step-by-step explanation:

Answer:

a survey

observational study

Please give me Brainliest, I really need it.

A Survey is the gathering of information. Asking a group to respond to one or more questions is an example of a survey which is a type of observational study.

A survey is a collection of question asked to a random group of people who represent the entire population, the responses of the group is assumed to be valid for the entire population.

The blank spaces in the statement can be filled as shown below.

Asking a group to respond to one or more questions is an example of a survey which is a type of observational study.

Learn more about Survey:

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Answer:

Angle 5 is 75 degrees

Step-by-step explanation:

angle 1 is congruent to angle 5

so angle 5 is also 75 degrees.

The measure of angle 2 and 5 are 65° and 85° respectively.

Angles in parallel lines are angles that are created when two parallel lines are intersected by another line called a transversal.

Given that, lines A and B are parallel.

Here, m∠1 = 75° and m∠3 = 40°

Now, x+m∠2+m∠3=180°

x=m∠1 (Vertically opposite angles)

x=75°

75°+m∠2+40°=180°

m∠2+115°=180°

m∠2=65°

m∠2=m∠4=65° (Interior alternate angles are equal)

Now, m∠4+m∠3+m∠5=180°

65°+40°+m∠5=180°

m∠5=85°

Therefore, the measure of angle 2 and 5 are 65° and 85° respectively.

To learn more about the vertical angle theorem visit:

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Answer:125

Step-by-step explanation:

Answer: 17 square units

Step-by-step explanation:

There are two rectangles

One has the dimensions

5 by 3, A = 5 * 3 = 15

The other has the dimensions 3-2 or 1 by 7-5 or 2, A = 1 * 2 = 2

Add the areas:

15 + 2 = 17

The entire area is 17 square units

Answer:

G: Inverse multiplication

Step-by-step explanation:

Statement is 2•1/2=1

Now, what this means is that when we multiply a number by it's inverse form, the result will be 1.

This means that this statement denotes an inverse multiplication.

Thus, the last option is the correct answer

Answer:

Quadrilateral

Step-by-step explanation:

Quadrilateral is a four sided figure like the US flag.

Answer:

quadrilateral

Step-by-step explanation:

Answer:

step 1 is wrong

subtract 15 from both sides

x=46

neither tom nor jerry

Answer:

both answers are wrong, substract 15 from both sides, 46, neither tom nor jerry

Step-by-step explanation:

1. 12 ÷ 4 = 3

2. -2.5=25

x=-10

3. 123-77=46

4. neither one of them because 41+12≠29 and 52-14≠66

Answer:

1.)[tex]x=-\frac{1}{6} +\frac{5y}{6}[/tex]

2.)[tex]x=\frac{5}{3} -\frac{2y}{3}[/tex]

Answer:

A) x+y

Step-by-step explanation:

A)  x+y

C & D are automatically out because if you multiply or divide by a negative number, you get a positive number.

B) -11/8-(-11/4)=

-11/8+22/8=11/8 (positive)

Answer:

The answer would be B.

Step-by-step explanation:

The answer is B Because -11/4 -11/8 would equal to -4 1/8 which is negative so the answer is B

Answer:

[tex]AC:CB = 3:2[/tex]

Step-by-step explanation:

Given

The attached

Required

Find the ratio when partitioned by C

When BA is partitioned, the segments are: AC and CB

From the attachment:

[tex]AC = 3[/tex]

[tex]CB = 2[/tex]

So, the ratio is:

[tex]Ratio = AC : CB[/tex]

[tex]AC:CB = 3:2[/tex]

Answer:

7:30

Step-by-step explanation:

5:30 + 2:00 = 7:30

Answer:

7:30 p.m.

Step-by-step explanation:

you start babysitting at 5:30 you babysit for 2 hours 5 + 2 equals 7 . 7+.30 equals 7:30 p.m.

Answer:

$79.12

Step-by-step explanation:

0.54 x 172 = 92.88

172 - 92.88 = 79.12

He needs $79.12 more.

Bailey has saved 54% of the money he needs to buy a new

skateboard he needs $79.12 more.

We have given that,

Bailey has saved 54% of the money he needs to buy a new

a skateboard that costs $172.00.

We have to determine how much more money he needs to buy the skateboard.

What is the savings?

Saving is income not spent or deferred consumption. Methods of saving include putting money aside in, for example, a deposit account, a pension account, an investment fund, or cash. Saving also involves reducing expenditures, such as recurring costs.

0.54 x 172 = 92.88

172 - 92.88 = 79.12

He needs $79.12 more

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Answer:

The answer would be 150 degrees.

Step-by-step explanation:

When looking at the problem you can see that you have two parallel lines and a transversal. Since the two lines are parallel, this allows alternate interior angles to form, i.e. <A and <B.

Since angle A and B are alternate interior angles, you can now set the two equal to each other.

So, in order to find out what x equals, you have to set the two equations equal to each other.

8x-10=3x+90

Next, solve the new equation.

8x-10=3x+90

Add 10 to both sides.

8x=3x+100

Subtract 3x from both sides.

5x=100

Divide both sides by 5 and you'll get your answer.

x=20

Now that you know what x equals, you can substitute it into the equation for B.

<B= 3(20)+90

60+90= 150

<B=150 degrees

That gives you your answer of <B = 150 degrees.

To check your work you can also substitute x into the equation for <A.

<A= 8(20)-10

160-10= 150

<A=150 degrees.

Therefore, you have just proved that the answer is 150 degrees.

Answer:

y=31.04668635

Rounded to 1dp would be 31.0

So Y=31.0cm

Step-by-step explanation:

Hypotenuse : Opposite the right angle.

Opposite : Opposite the angle.

Adjacent : the only side left.

Soh Cah Toa (trigonometry formula)

You don't need hypotenuse, so that's irrelevant.

You have opposite and adjacent, O and A, which is tan.

You need to rearrange the formula.

Length ×Tan(Angle) =Opposite.

37×Tan(40)=31.04668635cm

Answer:

12

Step-by-step explanation:

Pythag Theorem is Leg² + Leg²= Hypotenuse²

So I set it up as: x² + 9²=15²

Then solved and got: x² + 81 =225

Then I subtracted 81 on both sides and got: x² = 144

Then squareroot each side to undo the x² and got x=12

Answer:

they are both half

Step-by-step explanation:

1 is half of 2 And 4 is half of 8

Answer:  2/25 as a percent is 8% and as a decimal is 0.08 and what is your question I don't really understand?

Step-by-step explanation:

Answer:80

Step-by-step explanation:

Answer:

Step-by-step explanation:

Hypotenuse is always the longest side.

Opposite is always across from the angle of the hypotenuse line.

Adjacent will then be the last line, or whichever is closest to the angle.

Answer:

the answer would be Adjacent

9514 1404 393

Answer:

  61/27

Step-by-step explanation:

Perhaps you want to evaluate (12a +2d +8)/(2ad). The result is shown below.

Answer:

D last one

Step-by-step explanation:

Answer:

a. The 95% confidence interval is 1,022.94559 < μ < 1,003.0544

b. There is significant evidence that Florida students perform differently (higher mean) differently than other students in the United States

c. i. The 95% confidence interval for the change in average test score is; -18.955390 < μ₁ - μ₂ < 6.955390

ii. There are no statistical significant evidence that the prep course helped

d. i. The 95% confidence interval for the change in average test scores is  3.47467 < μ₁ - μ₂ < 14.52533

ii. There is statistically significant evidence that students will perform better on their second attempt after the prep course

iii. An experiment that would quantify the two effects is comparing the result of the confidence interval C.I. of the difference of the means when the student had a prep course and when the students had test taking experience

Step-by-step explanation:

The mean of the standardized test = 1,000

The number of students test to which the test is administered = 453 students

The mean score of the sample of students, [tex]\bar{x}[/tex] = 1013

The standard deviation of the sample, s = 108

a. The 95% confidence interval is given as follows;

[tex]CI=\bar{x}\pm z\dfrac{s}{\sqrt{n}}[/tex]

At 95% confidence level, z = 1.96, therefore, we have;

[tex]CI=1013\pm 1.96 \times \dfrac{108}{\sqrt{453}}[/tex]

Therefore, we have;

1,022.94559 < μ < 1,003.0544

b. From the 95% confidence interval of the mean, there is significant evidence that Florida students perform differently (higher mean) differently than other students in the United States

c. The parameters of the students taking the test are;

The number of students, n = 503

The number of hours preparation the students are given, t = 3 hours

The average test score of the student, [tex]\bar{x}[/tex] = 1019

The number of test scores of the student, s = 95

At 95% confidence level, z = 1.96, therefore, we have;

The confidence interval, C.I., for the difference in mean is given as follows;

[tex]C.I. = \left (\bar{x}_{1}- \bar{x}_{2} \right )\pm z_{\alpha /2}\sqrt{\dfrac{s_{1}^{2}}{n_{1}}+\dfrac{s_{2}^{2}}{n_{2}}}[/tex]

Therefore, we have;

[tex]C.I. = \left (1013- 1019 \right )\pm 1.96 \times \sqrt{\dfrac{108^{2}}{453}+\dfrac{95^{2}}{503}}[/tex]

Which gives;

-18.955390 < μ₁ - μ₂ < 6.955390

ii. Given that one of the limit is negative while the other is positive, there are no statistical significant evidence that the prep course helped

d. The given parameters are;

The number of students taking the test = The original 453 students

The average change in the test scores, [tex]\bar{x}_{1}- \bar{x}_{2}[/tex] = 9 points

The standard deviation of the change, Δs = 60 points

Therefore, we have;

C.I. = [tex]\bar{x}_{1}- \bar{x}_{2}[/tex] + 1.96 × Δs/√n

∴ C.I. = 9 ± 1.96 × 60/√(453)

i. The 95% confidence interval, C.I. = 3.47467 < μ₁ - μ₂ < 14.52533

ii. Given that both values, the minimum and the maximum limit are positive, therefore, there is no zero (0) within the confidence interval of the difference in of the means of the results therefore, there is statistically significant evidence that students will perform better on their second attempt after the prep course

iii. An experiment that would quantify the two effects is comparing the result of the confidence interval C.I. of the difference of the means when the student had a prep course and when the students had test taking experience

Answer:

Step-by-step explanation:

8 in × (1 ft)/(12 in) = ⅔ ft

36 ft × 58 ft × ⅔ ft = 1392 ft³

1392 ft³ × (1 yd³)/(27 ft³) ≅ 52 yd³

52 yd³ × $123/yd³ = $6396