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Art [367]
2 years ago
6

4.

Mathematics
1 answer:
Zarrin [17]2 years ago
5 0

Answer:

t=-6

Step-by-step explanation:

-4t-4=20 (move constant to the right)

-4t=20+4 (Calculate 20 + 4)

-4t= 24 (then divide 24 on both sides)

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A survey found that 89% of a random sample of 1024 American adults approved of cloning endangered animals. Find the margin of er
Kobotan [32]

Answer:

The margin of error for the survey is 0.016

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1024

Sample proportion:

\hat{p} = 89\% = 0.89

We have to find the margin of error associated with a 90% Confidence interval.

Formula for margin of error:

z_{stat}\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.10} = 1.64

Putting the values, we get:

M.E = 1.64\times (\sqrt{\dfrac{0.89(1-0.89)}{1024}})\\\\M.E=0.016

Thus, the margin of error for the survey is 0.016

3 0
3 years ago
PLEASE HELP! FIND THE SURFACE AREA OF THIS SQUARE-BASED PYRAMID. I REALLY NEED HELP
jolli1 [7]

Answer:

105

For the 4 triangular faces, find the area with 1/2 × base × height = 1/2 × 5 × 8 = 20

4 triangles -> 20 × 4 = 80

The area of the square base is 25

80 + 25 - 105 cm^{2}

3 0
3 years ago
The table shows the results of a survey of seventh-grade students in the lunch-line
Anni [7]

Answer:

D

Look at the picture. :)

5 0
2 years ago
The heat in the house is set to keep the minimum and maximum temperatures (in degrees Fahrenheit) according to the equation |x –
olga2289 [7]

Given the equation |x-72.5|=4.

When x is maximum, we have

|x-72.5|= x-72.5. Hence x-72.5 =4\\x=76.5

The maximum temperature is 76.5\; ^oF

When x is minimum, we have

|x-72.5|=72.5-x. Hence 72.5-x =4\\x=68.5

The minimum temperature is 68.5\; ^oF

7 0
3 years ago
Read 2 more answers
Charlie and Andy solve this problem in two different ways.
hammer [34]
Subtracted then divided
5 0
3 years ago
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