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natima [27]
2 years ago
6

Beth sold half of her comic books and then bought nine more. She now has 28. With how many did she begin?

Mathematics
2 answers:
tankabanditka [31]2 years ago
8 0

Answer:

She had 38!

Step-by-step explanation:

28-9 is 19 then just multiply that by two which is 38

Luba_88 [7]2 years ago
5 0

Answer:

38

Step-by-step explanation:

28-9=19 19+19=3

subtract 9 from 28 then you get 19 then you add 19 to 19 and you get 38

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3.5 × 10^7 is the answer in scientific notation.

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Solution:

  • (x² + x – 12)(x² + 10x + 25)
  • => (x⁴ + 10x³ + 25x²) + (x³ + 10x² + 25x) + (-12x² - 120x - 300)
  • => x⁴ + 10x³ + 25x² + x³ + 10x² + 25x - 12x² - 120x - 300
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The only term that has a x-variable is "-95x".

The coefficient of x is -95.

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3 years ago
If u(x) = x5 – x4 + x2 and v(x) = –x2, which expression is equivalent to (u/v)(x)
choli [55]

Answer:

c) -x^3 + x^2 - 1

Step-by-step explanation:

Given: u (x) = x^5 - x^4 +x^2 and v(x) = -x^2

(u/v)(x) = u(x)/v(x)

Now plug in the given functions in the above formula, we get

= (x^5 - x^4 + x^2) / -x^2

We can factorize the numerator.

In x^5 - x^4 + x^2. the common factor is x^2, so we can take it out and write the remaining terms in the parenthesis.

= x^2 (x^3 - x^2 + 1) / - x^2

Now we gave x^2 both in the numerator and in the denominator, we can cancel it out.

(u/v)(x) = (x^3 - x^2 + 1) / -1

When we dividing the numerator by -1, we get

(u/v)(x) = -x^3 + x^2 - 1

Answer: c) -x^3 + x^2 - 1

Hope you will understand the concept.

Thank you.

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