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Crazy boy [7]
3 years ago
5

Factor the polynomial: 5x2(x - 1) - 7(x - 1)

Mathematics
1 answer:
olga_2 [115]3 years ago
8 0

Answer:

C

Step-by-step explanation:

Given

5x²(x - 1) - 7(x - 1) ← factor out (x - 1) from each term

= (x - 1)(5x² - 7) → C

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Answer:

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3 years ago
Connie has saved up $15 to purchase a new CD from the local store. The sales tax in her county is 5% of the sticker price. Write
Sholpan [36]

Answer:

x + 0.05x = 15, solution is $14.29

Step-by-step explanation:

We can create an equation for this scenario to try and solve it.

Assuming the cost of the CD is x, it’s sale tax will be 0.05x (as that is 5% of x, 0.05.)

We can write the equation in two ways:

x + 0.05x = 15 or 1.05x = 15.

Assuming we take the second one (easier to work with), we can divide both sides by 1.05. The equation simplifies to x = 14.289... which rounds to x = 14.29.

Therefore, the equation is x + 0.05x = 15 and the solution is $14.29.

Hope this helped!

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