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4 years ago

What are the factors of the expression below? -x+2x+35

Mathematics

2 answers:

Serhud [2]4 years ago

6 0

The answer is A

Good luck

gulaghasi [49]4 years ago

5 0

Answer:

Step-by-step explanation:

Given

- x² + 2x + 35 ← factor out - 1 from each term

= - 1 (x² - 2x - 35)

To factor the quadratic inside the parenthesis

Consider the factors of the constant term (- 35) which sum to give the coefficient of the x- term (- 2)

The factors are - 7 and + 5

since - 7 × + 5 = - 35 and - 7 + 5 = - 2, hence

x² - 2x - 35 = (x + 5)(x - 7)

- x² + 2x + 35 = - 1 (x + 5)(x - 7) → A

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3 years ago

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Answer:

$6,506.51

Step-by-step explanation:

Recall that increasing an amount C in x% is equivalent to multiply it by (1+x/100)

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Month 0 (first payment)

$250

Month 1

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Month 2

$250(1+\frac{12.04}{12}+(\frac{12.04}{12})^2)$

Month 3

$250(1+\frac{12.04}{12}+(\frac{12.04}{12})^2+(\frac{12.04}{12})^3)$

Month 24 (2 years)

$250(1+\frac{12.04}{12}+(\frac{12.04}{12})^2+(\frac{12.04}{12})^3+...+(\frac{12.04}{12})^{24})$

The sum

$1+\frac{12.04}{12}+(\frac{12.04}{12})^2+(\frac{12.04}{12})^3+...+(\frac{12.04}{12})^{24}$

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$\frac{1-(12.04/12)^{25}}{1-(12.04/12)}=26.02603071$

so, after 2 years the saving balance is

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3 years ago

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Hope this helped and I’ve shown my work and the answer! :)

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