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Grace [21]
3 years ago
11

What is the perimeter of FGHJ?

Mathematics
2 answers:
Solnce55 [7]3 years ago
8 0

Answer:

B

Step-by-step explanation:

shtirl [24]3 years ago
7 0

Answer:

B.

Step-by-step explanation:

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Dylan wants to determine a 80 percent confidence interval for the true proportion of high school students in the area who attend
irakobra [83]
He should use a sample size of 655.

We can use the formula

n=\frac{z_{\alpha\2}^2\hat{p}(1-\hat{p})}{E^2}

We find the z-value by first subtracting the confidence level from 1:
1 - 0.8 = 0.2

Divide this by 2:
0.2/2 = 0.1

Subtract this from 1:
1 - 0.1 = 0.9

Using a z-table (http://www.z-table.com) we find the z-score associated with this is 1.28.

Now we plug our information into our formula:
n=\frac{z_{\alpha\2}^2\hat{p}(1-\hat{p})}{E^2}
\\
\\=\frac{1.28^2(0.8)(0.2)}{0.02^2} = 655.36
4 0
3 years ago
How many terminal zeros does the integer equal to 80^16*75^8 have? PLZ HURRY DOING A TEST
avanturin [10]

Answer:

24 terminal zeros

Step-by-step explanation:

Here, we want to know the number of terminal zeros that the product if the integers above has

Terminal zeros refer to the zeros at the right of the last non zero digits

The product we are dealing with is;

80^16 * 75^8

80^16 itself has 16 terminal zeros

while 75^8 should have 8 terminal zeros

So the total number of expected terminal zeros is simply the addition of both terminal zeros and that gives 16 + 8 = 24 terminal zeros

3 0
3 years ago
What is the height of a parallelogram with base 6 meters and an area of 90 square meters​
bearhunter [10]

Step-by-step explanation:

Given

In a parallelogram

base (b) = 6 meters

Area of parallelogram (A) = 90 m²

height (h) = ?

We know

A = b * h

90 = 6 * h

h = 90 / 6

h = 15 meters.

Hope it will help :)

5 0
3 years ago
If 5 pieces of candy cost $4.50, how much would eight pieces cost
Artyom0805 [142]

Answer: $22.50

Step-by-step explanation:

If each piece of candy cost $4.50 you have to multiply that by 5.

4.50+4.50+4.50+4.50+4.50

Or 4.50x5

=$22.50

Don’t forget to mark me brainliest :)

4 0
4 years ago
4+2(x+7)=26 does any body know what it is
aliina [53]

Answer:

4

Step-by-step explanation:

Distribute the 2 to the X and 7

4+2x+14=26

2x+18 =26

minus the 18 from 26

2x = 8

divide 2x and 8 by 2

X= 4

3 0
3 years ago
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