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Alex73 [517]
3 years ago
9

There are

Mathematics
2 answers:
Archy [21]3 years ago
7 0
17 books in total, and 8 new. To find the number of used books, we subtract 8 from 17.

17-8= 9 used books

Now we have 8 new books and 9 used books.

All books: 17
Used books: 9
New books: 8

(a) all books: used books
     17: 9

(b) new books: used books
     8: 9
IgorC [24]3 years ago
6 0
17 books
You would do 17-8
= 9 used books
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Delaney scored -15 points in a word game. Find the opposite of this integer
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Answer:

positive 15

Step-by-step explanation:

opposite of negative is positive

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In 2018, there were about 32 million teenagers (aged 13–17) in the United States. They each sent an average of 1200 text message
Alja [10]

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Step-by-step explanation:

32,000,000 teenagers

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3 years ago
Simplify the expression?! :) please!
Arlecino [84]
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3 0
3 years ago
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The formula used to calculate the value of a savings accounty =(1+)120What does theafter t years is A(t)=0.04= 1500 1+120.04frac
yulyashka [42]

We have here the formula for Compound Interest:

A=P(1+\frac{r}{n})^{nt}

Where:

• A is the accrued amount.

,

• P is the Principal (the original amount of money, the starting amount of money).

,

• r is the interest rate.

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• n is the number of times per year compounded.

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• t is the time in years.

When we have that n is equal to 12, we are talking here about that the amount of money is being compounded monthly (we have 12 months in a year, 12 periods, n = 12). <em>Therefore, we are dividing the rate, r, by the number of compoundings per year, n, and this is the rate per each new compounding period of time, r/n, and, in this case, n = 12 (monthly interest rate). </em>

Therefore, in few words, the fraction (0.04/12) is the monthly interest rate (option C).

[If we see the other options, we have:

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,

• How long the money has been in the account is time, t.

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• The starting balance in the account is the Principal, P. ]

7 0
1 year ago
5,-15,35,55....<br> What is the common difference
harkovskaia [24]

Answer:

The common difference is -20

Step-by-step explanation:

Simply subtract 5 from -15

-15-5 = -20

3 0
3 years ago
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