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notsponge [240]
3 years ago
12

Katie invested $1200 at 8.5% interest. She earned $612 interest at the end of y years. What is the value of y?

Mathematics
1 answer:
Semmy [17]3 years ago
8 0

Answer:

i believe the answer is 6

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Factor by grouping<img src="https://tex.z-dn.net/?f=%284y%5E3%20%2B%2028y%5E2%29%20%2B%20%28y%20%2B%207%29" id="TexFormula1" tit
Inessa05 [86]

We have the following expression given:

(4y^3+28y^2)+(y+7)

We can start selecting as common factor 4y^2 and we got:

4y^2(y+7)+(y+7)

Now we can select y+7 as common factor and we got:

(y+7)\left\lbrack 4y^2+1\right\rbrack

So then our final answer would be:

(y+7)(4y^2+1)

3 0
1 year ago
Type the correct answer in each box. use numerals instead of words. students in a reading class have three options for their boo
Alexus [3.1K]

The answers to the questions on how she would use the colored chips are given here:

  • brochure 4 blue chips
  • writing a new article 6 yellow chips
  • designing a computer presentation 10 red chips

<h3>How to solve for the values</h3>

For the first percentage

20 / 100 = x/20

= 20 * 20 = 100x

400 = 100x

divide through by 100

x = 400/100

x = 4

For the second percentage

30/100 = x/20

600 = 100x

x = 600/100

x = 6

For the last

50/100 = x/20

1000 = 100x

x = 10

The proof is that 6 + 4 + 10 still gives us 20

Read more on percentages here: brainly.com/question/24877689

#SPJ1

4 0
2 years ago
Helpppppp!!! PLEASE<br> :((
Ksenya-84 [330]

Answer:

the only one that is a function is B

Step-by-step explanation:

the rest of them have repeating inputs which makes them no functions

7 0
3 years ago
1.
belka [17]

1. D

2. D

I don't know the answer to number 3 sorry.

8 0
3 years ago
Read 2 more answers
The piecewise function f(x) is defined below. What is the value of f(–2)?
Usimov [2.4K]
f(-2)=3, because f(x)=3 for -2\leq x\ \textless \ 0
3 0
3 years ago
Read 2 more answers
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