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3 years ago

PLZZZ ANSWER QUICK!!!!

Mathematics

1 answer:

Ivanshal [37]3 years ago

3 0

Answer:

Letter B. -9x² - 15

Step-by-step explanation:

You first simplify the parentheses...

-4x²- 5(x + 3) + x²

-4x²-5x-15 + x²

Then you simplify the exponents to get...

-9x²-15

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Find the 10th term of the geometric sequence whose common ratio is 3/2 and whose first term is 8

igor_vitrenko [27]

Answer: 19683/64

Step-by-step explanation:

$a_{n}=8\left(\frac{3}{2} \right)^{n-1}\\\\\implies a_{10}=8 \left(\frac{3}{2} \right)^{10-1}=\boxed{\frac{19683}{64}}$

3 0

2 years ago

100 pts for an answer. one day jasmine earned $25.20 for 6 hours of work. Another day jasmine earned 16.80 for 4 hours of work.

alexira [117]

Answer:

Step-by-step explanation:

Use the given points to find the hourly pay:

$25.20/6 = $4.20
$16.80/4 = $4.20

Correct function to show the payment for h hours is:

c = 4.20h

5 0

3 years ago

Solve each inequality. I need help please.

Radda [10]

You just need to divide to get to 1n. -3n = 84
So the answer is 84/ -3 = -28. n= -28

7 0

3 years ago

Read 2 more answers

Jenny's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Jenny $4.40 per pound, and type

postnew [5]

Answer:

221 pounds of type A coffee

Step-by-step explanation:

$4.40 x 221 = $972.4

Hope this helped! :)

7 0

3 years ago

1. Michelle purchased 25 audio files in January. In February she

san4es73 [151]

Answer:

Michelle purchased 25 audio files in January. The percent increase is 60%

Solution:

Given Data:

Michelle purchases = 25 audio files in January

Again purchased = 40 audio files in February

We need to find the percent increase for the given data.

Step 1:

Use the formula for percent change ,

$=\frac{\text { amount of change }}{\text { original amount. }}$

Step 2:

First we find the amount of change from the question.

Amount of change = 40 – 25

By subtracting, we get 15.

Step 3:

substitute the values in formula we get,

Formula percent change = $\frac{15}{25}$ = 0.6

Percent = 0.6 $\times$ 100 = 60 %.

Result:

Michelle purchased 25 audio files in January. And In February she purchased 40 audio files. Hence the percent increase is 60%.

8 0

3 years ago