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2 years ago

8

what must be the length of a ladder that mr. rizzo can use if he wishes to place the bottom of the ladder five feet from a wall

and he wishes to reach a window that is 15 feet above the ground? use the pythagorean theorem to solve pls

1 answer:

Inessa [10]2 years ago

5 0

Answer:

jgdnh svfbbth1f we ra r ti

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A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained p

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Answer:

no of sample within two percentage points is 5409

no of sample not use prior estimates is 8321

Step-by-step explanation:

Given data

E = 2% = 0.02

male m = 21.2 % = 0.212

female f = 19.7 % = 0.197

to find out

no of sample within two percentage points and if does not use any prior estimates

solution

first we calculate no of sample within two percentage points

we know Z critical value for 99% is 2.58

so no of sample will be

n = (Z / E )² × m(1-m) + f ( 1-f )

put all the value we get no of sample

n = (2.58 / 0.02 )² × 0.212 ( 1 - 0.212 ) + 0.197 ( 1 - 0.197 )

n = 16641 ×0.3250

no of sample within two percentage points is 5409

in 2nd part no of sample not use prior estimates

here than f and m will be 0.5

than

n = (Z / E )² × m(1-m) + f ( 1-f )

put all value

n = (2.58 / 0.02 )² × 0.5 ( 1 - 0.5 ) + 0.5 ( 1 - 0.5 )

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2 years ago

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Answer:

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Hence, the equation of line is y=-2x-4.

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2 years ago