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Masja [62]
3 years ago
15

Help please this is my last question left

Mathematics
1 answer:
ella [17]3 years ago
7 0

Answer:

10a and 5a+2a+3a

Step-by-step explanation:

6a + 4a = 10a

10a = 10a

9a is not equal to 10a

10+a is not equal to 10a

5a+2a+3a = 10a

6a - 4a is not equal to 10a

a^10 is not equal to 10a

Hope this helps! :)

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Describe the steps you would use to factor 2x3 + 5x2 – 8x – 20 completely. Then state the factored form.
WARRIOR [948]
The polynomial 2x^3 + 5x^2-8x-20 may have solutions which are the divisors of -20, therefore -20 has the following divisors: \pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20.
If x=1, then 2\cdot1^3 + 5\cdot1^2-8\cdot1-20=-20\neq 0,
if x=-1, then 2\cdot(-1)^3 + 5\cdot(-1)^2-8\cdot(-1)-20=-9\neq 0,
if x=2, then 2\cdot2^3 + 5\cdot2^2-8\cdot2-20=0, then x=2 is a solution and you have the first factor (x-2). 
If x=-2, then 2\cdot(-2)^3 + 5\cdot(-2)^2-8\cdot(-2)-20=0, then x=-2 is a solution, so you have the second factor (x+2).
Since x-2 and x+2 are two factors of 2x^3 + 5x^2-8x-20 , then the polynomial x^2-4 is a divisor of 2x^3 + 5x^2-8x-20 and dividing the polynomial 2x^3 + 5x^2-8x-20 by x^2-4 you obtain 
 2x^3 + 5x^2-8x-20=(x-2)(x+2)(2x+5).











5 0
3 years ago
Read 2 more answers
A recycling center pays 25 cents per aluminum can recycled at its facility. If Tracy recycles 5 aluminum cans there, how many do
USPshnik [31]
If Tracy recycles 5 and each is 25 cents

5 times 0.25 equals 1.25

She would get$1.25 for recycling 5 cans
3 0
3 years ago
What is the range of f(x) = ( 3/4 ) x - 4?
worty [1.4K]

it's B

I just took the test

7 0
3 years ago
A rectangular garden has a walkway around it. The area of the garden is 4​(4.5xplus1.5​). The combined area of the garden and th
Arte-miy333 [17]

Answer:

Walkway is 1.5 units²

Step-by-step explanation:

Just subtract the area of the garden from the combined area:

<u>5.5-4=1.5</u>

Also did you mean difference? I don't know what it means by sum.

8 0
3 years ago
Please help answer this question for me.
Lilit [14]

Answer:

Yes

Step-by-step explanation:

4 0
3 years ago
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