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Archy [21]
4 years ago
12

Factor -7x3 + 21x2 + 3x - 9 by grouping. What is the resulting expression?

Mathematics
1 answer:
irga5000 [103]4 years ago
8 0

Answer:

(x-3)(-7x^2+3) is the resulting expression after grouping

Step-by-step explanation:

Given:

-7x^3+21x^2+3x-9

Now taking common -7x^2 from 1st 2 numbers and and 3 common from last we get

-7x^2(x-3)+3(x-3)

Now taking x-3 common from both numbers we get

(x-3)(-7x^2+3) which is the final equation after grouping

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Jet001 [13]

Answer:

B. sqrt 6 is the answer.maja

5 0
3 years ago
Why does -2^6 equal -64 but -2 x -2 x -2 x -2 x -2 x -2 equal 64?
user100 [1]

Answer:

Step-by-step explanation:

-2⁶ = -(2⁶) = -(64) = -64

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6 0
3 years ago
Explain how you would estimate to subtract 189 from 643
bulgar [2K]
To estimate an answer to this problem, you must first estimate the numbers as well. 189 would round to 190, and 643 would round to 640. Now you would subtract 190 from 640, giving you 460. 
4 0
3 years ago
Read 2 more answers
Before you answer, make sure to do a step by step explanation, if you forget, it's whatever. I'll give crowns to the people that
katen-ka-za [31]

Answer: 36.84

(lmk if this isnt right)

Step-by-step explanation:

To find the perimeter of the rectangle:

3+3+3+3+3+3=18

or

3(6)=18

To find the diameter of the circle:

12-(3+3)

12-6=6

You can combine the 2 half circles to make 1 full circle since they both have the same diameter. Use the circumference formula to solve.

C=πd

Substitute

C=3.14(6)

Multiply

C=18.84

Add the perimeter of the rectangle and the circumference of the circle.

18+18.84=36.84

4 0
3 years ago
Kerry has a net spendable income of $1,800 per month. She also has a significant amount of debt and payments of $150 per month.
Firdavs [7]
A the rent all together is
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the rent for c would cost

640 including everything
and the rent for d would be
475 + 50 + 40 + 35 = 60
so the answer would be D
hope this helped sorry for late answer
7 0
3 years ago
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