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3 years ago

Find how much was invested

Mathematics

1 answer:

Scilla [17]3 years ago

7 0

Answer:

t = Time

Step-by-step explanation:

A = X(1+.05)^t using X as the initial investment, compounded yearly

For $20000 more invested at 7%,

A' = (X+20000)(1+.07)^t

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Lucy has 4 more than 1/3 the number of pairs of socks as her sister. Lucy has at most 9 pairs of socks. How many pairs of socks

Volgvan

Answer: at most 15 pairs of socks

Step-by-step explanation:

Let the number of pair of socks of her sister be $x$ , and let the number of pairs Lucy has be $y$ .

Since , Lucy has 4 more than 1/3 the number of pairs of socks as her sister, this means that

$\frac{1}{3}x + 4 = y$ .............................. equation 1

Also , Lucy has at most 9 pairs of socks , this means that

$y\leq 9$ ....................................... equation 2

Equating the two equations , we have

$\frac{1}{3}x + 4 \leq 9$

multiply through by 3

$x + 12\leq 27$

subtract 12 from both sides

$x\leq 15$

Therefore , the sister has at most 15 pairs of socks

4 0

3 years ago

Am I right or wrong?

omeli [17]

You are absolutely right.

8 0

3 years ago

#9 i need help it would really be appreciated

son4ous [18]

For number 9, you know that it makes 40 copies every five minutes. All you have to do is divide 40 by 5.

40 ÷ 5 = 8

It makes 8 copies every minute.

Your chart can also help you check your answer. It says that it makes 96 copies every 12 minutes and it makes 104 copies every 13 minutes. So multiply 8 by 12 to check it and 8 by 13.

8 • 12 = 96
8 • 13 = 104

Since those answers match up with the chart, it must be correct.

The photocopier makes 8 copies every minute. Hope that helps!

4 0

3 years ago

Find the product. (-5a 2)3 · a 5 -15a10 -125a11 15a6 -125a10

alekssr [168]

The correct answer is not up there. its -125a^7

3 0

3 years ago

Read 2 more answers

One team c 82.5% of the football players weigh more then 200 pounds if 40 men are on the team how many weigh more then 200 pound

valentinak56 [21]

The answer is 33 because 40*0.825 or 40*82.5% is 33 men.

7 0

3 years ago