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3 years ago

Factor the expression. x²- 121

Mathematics

2 answers:

liraira [26]3 years ago

7 0

Hope this helps you if not let me know

malfutka [58]3 years ago

4 0

Answer:
(x + 11)(x - 11)

Explanation:
Step 1 - Write the equation in a^2 - b^2 formula

x^2 - 121
x^2 - 11^2

Step 2 - Factor the expression

x^2 - 11^2
(x + 11)(x - 11)

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Lelu [443]

Answer:

$q(x) =-5$

Step-by-step explanation:

I am solving this using Function Notation.

We are given:

$q(x)= \frac{1}{2}x - 3$

While we are to find:

$q(x) =-4$

In Function Notation, replace all the " $x$ " you see with the value you are given.

So, in this case,

$q(x)= \frac{1}{2}x - 3\\\\=\frac{1}{2}x - 3$

Would become

$q(x)= \frac{1}{2}x - 3\\\\=\frac{1}{2}(-4) - 3$

Now we can solve.

$\frac{1}{2}(-4) - 3$

Use PEMDAS; Parenthesis first;

$\frac{1}{2}(-\frac{4}{1})$

Cross divide: 1 cancels 1, -4 ÷ 2 = -2

Hence, we are left with

$(-2) - 3$

$-5$

Therefore, the value of x is -5

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2 years ago

What is the sum of the given polynomials in standard form ? (X^2-3x)+(-2x^2+5x-3)

Greeley [361]

$(x^2-3x)+(-2x^2+5x-3)=x^2-3x-2x^2+5x-3\\\\=(x^2-2x^2)+(-3x+5x)-3=-x^2+2x-3$

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3 years ago

9. Sonia bought 5 shirts that cost $38.00 each. If the tax rate is 8.5%, how much did Sonia pay?

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The answer is A

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3 years ago

Please help with this

ArbitrLikvidat [17]

Answer:

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Step-by-step explanation:

This can be solved with Pythagreon Thereom.

${a}^{2} + {b}^{2} = {c}^{2}$

Follow the steps below. A and B are the heaight an base, C is they hypotonuese.

${6}^{2} + {8}^{2} = {c}^{2} \\ 36 + 64 = {c}^{2} \\ 100 = {c}^{2} \\ 10 = c$

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3 years ago

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Phantasy [73]

72 / 4 = 18

The answer is 18.

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3 years ago

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