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ch4aika [34]
3 years ago
7

Can someone help me please with this one problem

Mathematics
1 answer:
cupoosta [38]3 years ago
3 0

Answer:

a) 15 feet

b) 192 feet

Step-by-step explanation:

Please see attached picture for full solution.

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1.5 inches should be right
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Marcy owed her frien Ericka $25 dollars and owed her $15 dollars.
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A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has d
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Answer:

Read step by step explanation

Step-by-step explanation:

The owner already knows that the limit for the average time delivered pizzas is 38 minutes. So we conclude

1.-The resulting mean from sample data ( x ) ( 27 customers) need to be smaller than 38 minutes, any value of sample above 38 minutes means more time for the delivery action and will indicate a failure for the future project

2.-As sample size is smaller than 30 the test has to be  t-student one tail test to the left

Test hypothesis

Null hypothesis                       H₀                  x  = 38

Alternative hypothesis           Hₐ                  x  <  38

We should test at a significance level α  = 0,05       (α = 5%)

If the result of the test is to accept  H₀  delivery project won´t be implemented, if on the other hand, H₀ is rejected then in the condition of the alternative hypothesis we accept Hₐ the sample indicates that we have a smaller average time than 38 minutes.

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2 years ago
Lucas and Tayvan can paint a house in 1 hour working together. If Tayvan works alone, he can paint the house in 1.5 hours. How l
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Answer:

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Step-by-step explanation:

The equation of a parabola in vertex form is

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Here (h, k) = (0, 6), thus

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y = ax² + 6

To find a substitute (- 1, - 2) into the equation

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- 2 = a + 6 ( subtract 6 from both sides )

- 8 = a

y = - 8x² + 6

4 0
2 years ago
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