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Debora [2.8K]
3 years ago
7

What is the sum of 3x2 + 2x - 4 and 2x2 - 3x + 1?

Mathematics
1 answer:
kari74 [83]3 years ago
5 0

Answer: 5x2−x−3

Step-by-step explanation: Please mark as brainliest if this helped

Let's simplify step-by-step.

3x2+2x−4+2x2−3x+1

=3x2+2x+−4+2x2+−3x+1

Combine Like Terms:

=3x2+2x+−4+2x2+−3x+1

=(3x2+2x2)+(2x+−3x)+(−4+1)

=5x2+−x+−3

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krok68 [10]

Answer:

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Step-by-step explanation:

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3 years ago
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3.2x + 7.9 + 8.2 + 6.7x<br> Simplify the expressions. (not equations!) <br> Please help ASAP.
Temka [501]

Answer:

9.9x + 16.1

Step-by-step explanation:

SImplify using like terms

Simplify:

  • 3.2x + 7.9 + 8.2 + 6.7x
  • 3.2x + 6.7x + 7.9 + 8.2
  • 9.9x + 16.1

-Chetan K

4 0
2 years ago
A) -3 · x = -21<br><br> b) -7x + 16 = 2x - 20<br> help pls
NeTakaya

Answer:4

Step-by-step explanation:

B) -7x-2x= -20-16

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      X= -36 /-9

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7 0
3 years ago
The density d of a substance is given by the formula d=mV, where m is its mass and V is its volume. Solve the formula for m.
NikAS [45]

Answer:m=d/V

Step-by-step explanation:

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5 0
4 years ago
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(c) One lorry travels from your town to another town. The lorry reaches a top speed
Katen [24]

Answer:

The average speed is 24 km/h less than the top speed of the lorry.

Step-by-step explanation:

The top speed of the lorry is the highest speed reached during transit, while its average speed is the mean speed attained

Given:.

Top speed of the lorry = 90 km/h

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Then,

The difference between the speed reached = top speed - average speed

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Therefore, the average speed is 24 km/h less than the top speed of the lorry.

8 0
3 years ago
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