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3 years ago

6

Abby is a server at a local restaurant. She makes an hourly wage of $3.50 plus she receives tips. On Monday, she works 6 hours a

nd receives tip money, t. Write an equation showing what Abby makes on Monday, y.

1 answer:

Minchanka [31]3 years ago

5 0

Answer:

t=6(3.50)

Step-by-step explanation:

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A market researcher for a provider of music player accessories wants to know the proportion of customers who own cars to assess

Luba_88 [7]

Answer:

Step-by-step explanation:

Hello!

To evaluate the market for a new car charger, a market researcher surveyed 600 customers and found out that 73% of them own a car.

The parameter of interest is the population proportion and the study variable is "the number of customers that own a car out of 600".

Using the Central Limit Theorem you can approximate the distribution of the sampling proportion to normal:

p'≈N(p; $\frac{p(1-p)}{n}$ )

Where p' is the sample proportion

p is the population proportion and the mean of the distribution

$\frac{p(1-p)}{n}$ is the variance of the distribution

Then de standard deviation of the samplig proportion distribution is $\sqrt{\frac{p(1-p)}{n}}$

You can estimate it using the sample proportion:

$\sqrt{\frac{p'(1-p')}{n}} = \sqrt{\frac{0.73*0.27}{600} }=0.0181$

Using the same sample proportion but a sample size of n=150, the estimated standard deviation is:

$\sqrt{\frac{p'(1-p')}{n}} = \sqrt{\frac{0.73*0.27}{150} }=0.0362$

I hope it helps!

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3 years ago

If trinalge abc= def by side-side-side triangle congruence theorem, then b=e by

Anna007 [38]

Answer: D: Corresponding parts of congruent triangles are congruent

Step-by-step explanation:

If two triangle are congruent using postulate of theorems of congruence then their corresponding parts are congruent by CPCTC rule.

The CPCTC rule says that if two triangles are congruent then their each corresponding part whether angles or sides must be equal.

Here if triangle abc= def by side-side-side triangle congruence theorem,

then b=e [which is a corresponding part of both triangles] by Corresponding parts of congruent triangles are congruent.

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