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spin [16.1K]
3 years ago
13

Find the sum(-3.4k-7)+(3k+21)

Mathematics
2 answers:
HACTEHA [7]3 years ago
7 0

Answer:

.4k+14

Step-by-step explanation:

You need to combine like terms. In this case that is -3.4k+3k, which is .4k. Then, we need to combine -7 and 21. -7+21=14.

Here, we have our answer: .4k+14.

NNADVOKAT [17]3 years ago
3 0

Answer:

= -0.4k+14

Step-by-step explanation:

=-3.4k+-7+3k+21

=(-3.4k+3k)+(-7+21)

= -0.4k+14

I hope this helps :)

sorry if it turns out to be wrong :/

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aliina [53]

Answer:

answer D    ( if i interpreted your question correctly )

Step-by-step explanation:

Sqrt (c^2)  = √(c^2) = C

8 0
2 years ago
12g+6=78 thats what i need help with
Mrrafil [7]
I assume you need to solve for g?
12g + 6 = 78
- 6
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4 0
3 years ago
Read 2 more answers
1
AfilCa [17]

Answer:

(A) Your friend will save $282.

(B) Your friend will get 23.5% off the original price of the mattress.

Step-by-step explanation:

We first need to find out the price of the mattress after the 15% discount. Our first step is to find what 15% of 1,200 is. We can do this by multiplying the two numbers.

1,200 x 15% -----> 1,200 x 0.15= 180.

15% of $1,200 is $180.

Next subtract $180 from $1,200, which equals $1,020. We can now apply the 10% off internet coupon.

1,020 x 10% ------> 1,020 x 0.10= 102.

10% of $1,020 is $102.

Next we subtract $102 from $1,020 and we get $918, the final price of the discounted mattress.

We subtract to see how much money the friend saved.

$1,200 - $918= $282.

We can get the percentage by dividing $282 by $1,200.

282 / 1200= 0.235 decimal form ----> 23.5%

6 0
3 years ago
Matt plans to put concrete on a rectangular portion of his driveway. The portion is 8 feet long and 4 inches high. The price of
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A researcher wanted to determine whether eating sugary cereal for breakfast increased the aggression of second graders during th
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Answer:

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Step-by-step explanation:

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