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Sergeeva-Olga [200]
2 years ago
9

READ THE PROBLEM WITH UNDERSTANDING AND SHOW THE SOLUTION

Mathematics
1 answer:
liq [111]2 years ago
7 0

Answer:

Step-by-step explanation:

1)  the equation would be:

(2x+4)x(5x+1) because if the amount of ballpens are (2x+4) and the ballpens are $(5x+1) each, you would multiply them.

this is the expanded version of (2x+4)(5x+1)
{10x^2 + 2x + 20x + 4

10x^2 + 22x + 4}


2) (x^2 +1)(x+2) are multiplied to find the volume of the box

So when expanded it looks like this:

{x^3 + 2x^2 + x + 2}


3) (15a^2b^3) would be multiplied with (2a). This is because to find the total you would times the numbers.
so when expanded:

(15a^2b^3)(2a)

{(15a^3)(2ab^3)}


4) 5X(x+8)=33

5x+40=33

5x=33-40

5x=-7

X= -7/5


5) x-8=8x

8x-x = -8

7x=-8

X=-8/7


Hope this helps :)

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<u>Pre-Algebra I</u>

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