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slavikrds [6]
3 years ago
13

5 + 2n2 when n = 3. (The 2 after the n is an exponent)

Mathematics
2 answers:
Kisachek [45]3 years ago
7 0

Answer:

23

Step-by-step explanation:

Pani-rosa [81]3 years ago
5 0

Answer:

23

Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

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7 0
3 years ago
A refrigerator costs $580 a year to run. A family purchases a new one for $1200 that will save them 22% annually in energy costs
NeTakaya

Answer:

It will take nine years and four months for the refrigerator to pay for itself.

Step-by-step explanation:

The new refrigerator which costs $1200, saves the family 22% annually in energy cost.

Since the old refrigerator costs $580 to run, we want to determine how many years it will take for 22% of $580 per year to make $1200.

22% of $580

= 580 × 0.22

= 127.6

That is, it saved then $127.6 per year.

Now,

$1200/127.6

≈ 9.4

Which means, it will take 9 years and 4 months for the refrigerator to pay for itself.

7 0
2 years ago
Evaluate 5^-4<br> A.1/625<br> B.-1/625<br> C.625<br> D.-625
Vaselesa [24]

Answer:

A

Step-by-step explanation:

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8 0
2 years ago
Mr. Crosby's is driving jack, cassidy, and victor to the library. Jake lives 1/4 miles from the library, cassidy lives 1)3 mile
irakobra [83]

Answer:

5/8, 1/3, 1/4

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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