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3 years ago

Factor the polynomial.

2 answers:

8 0

It is answer choice A because you have to take the the GCF of each number which is 2x. Then if you were to divide the numbers by 2x you would put those numbers in the brackets.
$2x( x^{2} +2x+4)$ because $2x^3/2 x = x^{2}$ and $4 x^{2} /2x = 2x$ and $8x/2x = 4$

zzz [600]3 years ago

3 0

Factor out 2x to get 2x(x^2+2x+4). This cannot be factored further, so A is the answer.

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Ajar holding 36 coins, only nickels and quarters, is worth $6.20. There are eight more quarters than there are nickels. How many

Nonamiya [84]

Answer:

Step-by-step explanation:

Let n represent the number of nickels. Then the number of quarters is 36-n. The difference is ...

(36-n) -n = 8 . . . . . 8 more quarters than nickels

18 -n = 4 . . . . . . . divide by 2

14 = n . . . . . . . . add n-4 to both sides

There are 14 nickels in the jar.

_____

<em>Additional comment</em>

The problem supplies more information than is needed for a solution. You can work this as a "sum and difference" problem, as we have above, or you can work it as a "mixture" problem where the total coin value comes into play. Any two of the three given relations will give a solution.

n + q = 36 . . . . . . . number of coins

5n +25q = 620 . . . value of coins (in cents)

q -n = 8 . . . . . . . . difference in number of coins

6 0

2 years ago

If an object has a volume of 20 cubic inches and weights 28ounces what is the constant variation

AveGali [126]

Answer:

7/5 is the constant variation.

Hope this helps! Have a great day!

6 0

3 years ago

(Can someone help me please?)

Scorpion4ik [409]

Answer:

Step-by-step explanation:

The answer is 10 because there are 20 days and no home work is due on 7 of those days so that’s 13 days with homework from math or writing. Then you take the three days where it was just math and subtract that to get 10 days of writing.

6 0

3 years ago

If B(-5,8) is rotated about the origin by 180°, what are the new x and y coordinates for B'?

gladu [14]

Answer: B' (5, -8)

Step-by-step explanation:

Rotating 180 around the origin rule:

(x,y)--> (-x-y)

B (-5,8) B' (5, -8)

8 0

2 years ago

What is the solution to the inequality 0.8x+20<1.2x−40?

LuckyWell [14K]

Answer:x=150

Step-by-step explanation:

Step 1: Subtract 1.2x from both sides.

0.8x+20−1.2x=1.2x−40−1.2x

−0.4x+20=−40

Step 2: Subtract 20 from both sides.

−0.4x+20−20=−40−20

−0.4x=−60

Step 3: Divide both sides by -0.4.

−0.4x

−0.4

−60

−0.4

3 0

2 years ago