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3 years ago

Please help please please help

Mathematics

2 answers:

Lana71 [14]3 years ago

6 0

Answer:

The correct answer is B. 3 ft, 6 ft, 5 ft

Step-by-step explanation:

A right triangle has side lengths that equal 90 degrees

3 x 6 x 5 = 90 ft.

cestrela7 [59]3 years ago

4 0

Answer:

It should be B

I hope i helped!

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Keiko received an $80 gift card for a coffee store. She used it in buying some coffee that cost $8.04 per pound. After buying th

Kryger [21]

Answer:

6 pounds of coffee.

Step-by-step explanation:

First, we determine how much money she spent. 80-31.76 = 48.24

Next, we divide the money spent by the price per unit. 48.24/8.04=6

Therefore, she bought 6 pounds of coffee.

3 0

3 years ago

Read 2 more answers

A survey of 80 randomly selected companies asked them to report the annual income of their presidents. Assuming that incomes are

Artyom0805 [142]

Answer:

The 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).

Step-by-step explanation:

The information provided is:

$n=80\\\sigma=30,000\\\bar x=585062.50\\\text{Confidence level} = 90\%$

The critical value of z for 90% confidence level is, 1.645.

Compute the 90% confidence interval estimate of the mean annual income of all company presidents as follows:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\\\\=585062.50\pm 1.645\times\frac{30000}{\sqrt{80}}\\\\=585062.50\pm5517.50\\\\=(579545, 590580)$

Thus, the 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).

This interval implies that there is 90% probability that the true mean annual income of all company presidents is within this interval.

4 0

3 years ago

2. Solve this equation for x: 0.17k - 0.43 = 0.25k + 0.05

stepan [7]

Answer:

k = 6

Step-by-step explanation:

im guessing you meant solve for k

0.17k - 0.43 = 0.25k + 0.05

-0.17k -0.17k

-0.43 = 0.08k + 0.05

-0.05 -0.05

-0.48 = 0.08k

divide both sides of the equal sign by 0.08

6 = k

4 0

3 years ago

What is 15 increased by 60%

vazorg [7]

What is 15 increased by 60 percent? Let's work it out!

First, you must know what 60 percent of 15 is.

60 percent of 15
 15 times .60
equals
9.

So 60% of 15 is 9.

Increased is a word which means added.

So, 15 plus 9 (15+9) is 24.

Final Answer = 24.

Hope I could help!
Ossashi(◔ ͜ʖ◔)

7 0

4 years ago

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A. Lily paid $6 for 3/8 lb of nuts. What is the unit rate as complex fraction (simplify)

SashulF [63]

Answer:

Ib = $16 per lb

Step-by-step explanation:

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3 years ago