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3 years ago

A cashier earns 8$ per hour.

Mathematics

1 answer:

ryzh [129]3 years ago

4 0

You can use a calculator or oh I know your brain

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2w+3=9 two step equations { the do /undo approach}

maw [93]

2w + 3 = 9 <em>subtract 3 from both sides</em>

2w = 6 <em>divide both sides by 2</em>

4 0

3 years ago

Read 2 more answers

Find the slope of the line that goes through the given points (-4,11) (-12,-1)

Ira Lisetskai [31]

Answer:

Step-by-step explanation:

Use the slope formula to find the slope of a line given the coordinates of two points on the line. The slope formula is m=(y2-y1)/(x2-x1)

so it would be

11-(-1)/12--4)

which would be

12/16

to simplify that it is 3/4

3 0

2 years ago

A sample of 20 account balances of a credit company showed an average balance of $1,170 and a standard deviation of $125. You wa

Lady_Fox [76]

Answer:

The P-value for this test is P=0.2415.

Step-by-step explanation:

We have to perform an hypothesis testing on the mean of alla account balances.

The claim is that the mean of all account balances is significantly greater than $1,150.

Then, the null and alternative hypothesis are:

$H_0: \mu=1150\\\\H_a: \mu>1150$

The sample size is n=20, with a sample mean is 110 and standard deviation is 125.

We can calculate the t-statistic as:

$t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{1170-1150}{125/\sqrt{20}}=\dfrac{20}{27.95}=0.7156$

The degrees of freedom fot this test are:

$df=n-1=20-1=19$

For this one-tailed test and 19 degrees of freedom, the P-value is:

$P-value=P(t>0.7156)=0.2415$

8 0

3 years ago

Five friends three bags of apples equally between them. Write the division represented in this situation as a fraction

tekilochka [14]

How many apples are i the bags of apples?

6 0

3 years ago

A researcher is using a regular, two-tailed test with α = .05 to determine whether a non-zero correlation exists in the populati

beks73 [17]

Answer:

Step-by-step explanation:

Download docx

7 0

3 years ago