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3 years ago

Gina is buying the t-shirt at $10 the sales tax is 7.5%

Mathematics

1 answer:

viva [34]3 years ago

5 0

Answer:

$17.50

Step-by-step explanation:

THATS THE TOTAL THE SALES TAX WOULD BE $0.75

thank you for your time

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A hypothesis test is to be performed for a population proportion. For the given sample data and null hypothesis, compute the val

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Answer:

The correct option is a

Step-by-step explanation:

From the question we are told that

The sample size is n = 415

The sample proportion is $\r p = 0.49$

Now

The null hypothesis is $H_o : p = 0.3$

The alternative hypothesis is $H_a : p \ne 0.3$

The test statistics is mathematically evaluated as

$t = \frac{\r p - p }{ \frac{\sqrt{ p (1- p )} }{n} }$

substituting values

$t = \frac{0.49 - 0.3 }{ \sqrt{ \frac{0.3 (1- 0.3 ) }{415} }}$

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3 years ago

Francesca ran five times as many miles as sophia last year. They ran a total of 3,455 miles. How many miles did each girl run la

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Answer:

Francesca: 2879 1/6 miles
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Step-by-step explanation:

For each mile that Sophia ran, Francesca ran 5 miles. Then Sophia ran 1/6 of their total. Sophia ran ...

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2 years ago

A statue is mounted on top of a 21 foot hill. From the base of the hill to where you are standing is 57feet and the statue subte

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Please find the attached diagram for a better understanding of the question.

As we can see from the diagram,

RQ = 21 feet = height of the hill

PQ = 57 feet = Distance between you and the base of the hill

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$\angle x$ = $\angleRPQ$ which is unknown.

Let us begin solving now. The first step is to find the angle $\angle x$ which can be found by using the following trigonometric ratio in $\Delta PQR$ :

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Which gives x to be:

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Now, we know that $\angle x$ and $\angle SPR$ will get added to give us the complete angle $\angle SPQ$ in the right triangle $\Delta PQS$ .

We can again use the tan trigonometric ratio in $\Delta PQS$ to solve for the height of the statue, h.

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$tan(\angle SPQ)=\frac{SQ}{PQ}$

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2 years ago

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Gina is buying the t-shirt at $10 the sales tax is 7.5%​

Gina is buying the t-shirt at $10 the sales tax is 7.5%