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Ivan
3 years ago
10

When (2x3 + 3x2 - 7x) is subtracted from (10x3 + 7x2 - 7) the result is

Mathematics
1 answer:
Viefleur [7K]3 years ago
6 0

Answer:

8 3 + 4 2 + 7 − 7

Step-by-step explanation:

Distribute

(103+72−7)−1(23+32−7)

(103+72−7)−23−32+7

Eliminate redundant parentheses

(103+72−7)−23−32+7

103+72−7−23−32+7

Combine like terms

103+72−7−23−32+7

83+72−7−32+7

Combine like terms

83+72−7−32+7

83+42−7+7

Rearrange terms

83+42−7+7

83+42+7−7

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Which expression is equivalent to 24x + 12?
Lyrx [107]

You can factor 12 from both terms to get

24x+12 = 12(2x+1)

7 0
3 years ago
Bella's bedroom is 3 meters wide and 6 meters
tangare [24]

Answer:

Gina

Step-by-step explanation:

Bella's bedroom is 3m x 6m = 18m^2

Gina's bedroom is 5m x 5m = 25m^2

8 0
3 years ago
20. The H.M. between 2 and 8 is<br>(1 marks )​
e-lub [12.9K]

Answer as an improper fraction = 16/5

Answer as a mixed number = 3 & 1/5

Answer in decimal form = 3.2

All of those values represent the same thing, but written in a different way.

=============================================================

Explanation:

I'm assuming HM stands for Harmonic Mean in this case.

If so, then we apply the reciprocal operation to each value to get 1/2 and 1/8 (from 2 and 8 respectively).

Add up those fractions:

1/2 + 1/8 = 4/8 + 1/8 = 5/8

Now we'll divide n = 2 over that result. The n = 2 refers to the number of items in the original set.

n divide over (5/8) = 2*(8/5) = 16/5 which is the answer as an improper fraction

-----------

To convert to a mixed number, we can do the following:

16/5 = (15+1)/5

16/5 = 15/5 + 1/5

16/5 = 3 + 1/5

16/5 = 3 & 1/5

Or if you need the answer in decimal form, then using a calculator would get you 16/5 = 3.2

6 0
3 years ago
What is the Y intercept of the fraction describing in the table?
Natasha2012 [34]

Answer:

Its 0

Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
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