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4 years ago

(Y+8) (y-8) how do I solve this?

Mathematics

2 answers:

mina [271]4 years ago

7 0

The answer is (( 11x 1+8/1x8))=72

denis-greek [22]4 years ago

6 0

You have to use foil to expand.
y(y-8) + 8 (y-8)
yy+y * -8+8(y-8)
yy+y * -8+ (8y+8 * -8)
then get rid of the ()
yy+y * -8+8y+8*-8
now you are going to combine like terms and simplify until you get this answer
y^2-64

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Answer:

Null Hypothesis, $H_0$ : p $\leq$ 85%

Alternate Hypothesis, $H_A$ : p > 85%

Step-by-step explanation:

We are given that it's been found that 85% of American adults suffer from triskaidekaphobia (fear of the number 13).

A USA Today/Gallup poll asked 1,006 randomly selected people 18 years old and older in telephone interviews "Suppose you checked into a hotel and were given a room on the thirteenth floor. Would this bother you or not?" 87% of the survey respondents answered they would be bothered.

Let p = proportion of respondents who would be bothered about given a room on the thirteenth floor

SO, Null Hypothesis, $H_0$ : p $\leq$ 85%

Alternate Hypothesis, $H_A$ : p > 85%

Here, null hypothesis states that the proportion of respondents who would be bothered about given a room on the thirteenth floor is less than or equal to 85%.

On the other hand, alternate hypothesis states that the proportion of respondents who would be bothered about given a room on the thirteenth floor is more than 85%.

Hence, this would be the correct null and alternative hypothesis.

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3 years ago

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3 years ago

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KJ = √45

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3 years ago

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