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Julli [10]
3 years ago
13

PLEASEEEE HELPPPPPPPP!

Mathematics
2 answers:
nikdorinn [45]3 years ago
6 0

Answer: A

Step-by-step explanation:

Distribute 3x^2 into (x +9) first:

3x^2 × x = 3x^3

3x^2 × 9 = 27x^2

Next distribute 7 into (x+9):

7 × x = 7x

7×9 = 63

Add any like terms (none in this problem)

3x^3 + 27x^2 + 7x + 63

Nesterboy [21]3 years ago
5 0
Do FOIL. Front, outside, inside, then last. The answer you will get is A, 3x^3+27x^2+7x+63.
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So I need help with 1 over x minus 8 so like 1/x-8 this is a negative exponent
Trava [24]

Answer and Step-by-step explanation:

one divided by (in parentheses) x minus eight should look like this:

\frac{1}{x-8}

This is a graph of this expression.

#teamtrees #WAP (Water And Plant)

8 0
2 years ago
Bill's Bargains sells 16 ounces of Circle O's cereal for $3.36. Debbie's Deals sells 40 ounces of Circle O's cereal for $7.60. W
astraxan [27]

Answer:

Debbie's Deals has the better deal with a price of $0.19 per ounce compared to Bill's Bargains at $0.21 per ounce.

Step-by-step explanation:

Divide $3.36 by 16 = $0.21

Divide $7.60 by 40 = $0.19

Debbie's Deals sells the Circle O's cereal for a cheaper per ounce price thus it's the better price and the better deal.

Good luck!

7 0
3 years ago
The area of a square garden is 1/49 km ^2. How long is each side?
babunello [35]
1/49=x^2 where x is the side of the square

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3 0
3 years ago
I need help with three and four
mart [117]

Answer:

3: a^{2}+2ab+b^{2}

4: 8x^{3} -12x^{2}+6x-1

Step-by-step explanation:

Question 3 can be re-written as:

(a+b)(a+b)

which equals:

a^{2}+2ab+b^{2}

Question 4 can be re-written as:

(2x-1)(2x-1)(2x-1)

Doing the first 2 brackets gives us:

(4x^{2} -4x+1)(2x-1)

Expanding these two:

8x^{3} -4x^{2} -8x^{2} +4x+2x-1

Simplifying it:

8x^{3} -12x^{2}+6x-1

4 0
2 years ago
Read 2 more answers
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alukav5142 [94]

Answer:

a) 2400m on the 20th day for Charlie.

1) 728.41m of 20th day for Daniella.

Didn't find n, sorry.

8 0
2 years ago
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