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GarryVolchara [31]
3 years ago
15

What is the absolute value of |-7.8| What is the absolute value of -7.8

Mathematics
2 answers:
Vaselesa [24]3 years ago
5 0
They're both exactly 7.8 .
inysia [295]3 years ago
5 0

Absolute value means distance from zero on a number line. -7.8 is 7.8 units away from zero on the number line. The absolute value of -7.8 is 7.8. Another way of thinking about absolute value is no matter what number you have inside the absolute value, the result will always be positive. Both of these numbers are 7.8 units away from zero.

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How Important Is Regular Exercise? In a recent poll1 of 1000 American adults, the number saying that exercise is an important pa
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Answer:

Step-by-step explanation:

Given that in a recent poll 1 of 1000 American adults, the number saying that exercise is an important part of daily life was 753.

Sample proportion = \frac{753}{1000} =0.753

To find 90% confidence interval we must find std error of proportion first

As per central limit theorem, sample proportion will follow a normal distribution with mean = 0.753

Std error of proportion= \sqrt{0.753*0.247/1000} \\=0.01363

90% Z critical value = 1.645

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3 years ago
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Answer:

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3 years ago
Please help ASAP it’s due in 4 minutes
maxonik [38]

Answer:

a) well we know the hypotenuse and we know that all sides are 90 degrees, and that its an even square, so if we split it into a triangle , we know that the other 2 angles are 45 degrees total, with this we can calculate  the other 2 sides, which round to 10 inches.

b) if we know the sides of the first side, knowing the fact that its a square we know that all sides are even, therefore, all sides are 10 inches, the formula the finding the perimeter is basic:

P=L(2) + W(2)

L being length, W being width and P being perimeter

so we add up all 4 sides, here is the equation:

10 + 10 + 10 + 10 = 10 x 4 = 40

With this, we know that the perimeter is 40 inches total

c) knowing how long the sides are, we can figure out the area through another basic formula:

A=L X W

With A meaning Area

since its a square, we know all the sides are even, so the width and length are both 10...

10 X 10 = 100

Step-by-step explanation:

I Hope I Helped!

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