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alexdok [17]
3 years ago
15

(5x²+2) - (-4x²+7)+(-3x²-5)

Mathematics
1 answer:
svp [43]3 years ago
6 0

Answer:

6x^2   -10

Step-by-step explanation:

(5x²+2) - (-4x²+7)+(-3x²-5)

Distribute the minus sign

(5x²+2) +4x²-7 +(-3x²-5)

Combine like terms

5x²+4x²-3x²  +2-7-5

6x^2              -10

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Geometry 1.4 - Segment Addition Postulate & Midpoint
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Answer:

28

Step-by-step explanation:

AB + BC = AC

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Combine like terms

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Subtract 3x from each side

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10 = x+4

Subtract 4 from each side

10-4 =x-4+4

6 =x

We want AC

AC = 4x+4 = 4*6+4 = 24+4 = 28

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The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters at
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Answer:

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therefore the old price for 1 liter of petrol is 30 cents

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

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