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3 years ago

Factorize -56xy - 7x please I don't really understand factorization :(

Mathematics

1 answer:

lora16 [44]3 years ago

5 0

Find the Greatest Common Factor (GCF)

GCF = 7x

Factor out the GCF, (Write the GCF first, then in parenthesis, divide each term by the GCF.)

7x(56xy/7x + 7x/7x)

Simplify each term in parenthesis

= -7x(8y + 1)

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Pam has taken 4 tests. She scored an 82, 94, 89 and 92. What would she need to score on her 5th test to have a mean of 90?

zavuch27 [327]

Answer:

Step-by-step explanation:

5*90 = 450

82+94+89+92 = 357

450-357 = 93

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3 years ago

Which numbers are divisible by 2? 5,12,or 412

Aleks04 [339]

The numbers are divisible by 2 are 12 and 412

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2 years ago

Read 2 more answers

PLEASE HELP! ONLY 4 MINUTES LEFT! WILL GIVE BRAINLIEST!

AnnyKZ [126]

absolutely you must choose 3 because only f(x)-1 is able to shift a graph down.

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3 years ago

A line passes through (1, –5) and (–3, 7).Write an equation for the line in point-slope form.

Anit [1.1K]

Answer:

y - 7 = 3(x + 3) and y = 3x + 16

Step-by-step explanation:

Find the slope first:

As we go from (–3, 7) to (1, –5), x increases by 4 and y increases by 12. Hence, the slope is m = rise / run = 12 / 4, or m = 3.

Next, modify the point-slope form y - k = m(x - h) by inserting the given info:

y - 7 = 3(x -[-3]), or

y - 7 = 3(x + 3)

Note: (h, k) represents the given point, which I have chosen to be (-3, 7).

Next, convert this result to slope-intercept form. Begin by solving this equation for y: y = 7 = 3x + 9, or:

y = 3x + 16

8 0

3 years ago

How do you simplify rational expressions?

deff fn [24]

The simplification of rational expressions is explained

Solution:

Rational expressions are fractions that have a polynomial in the numerator, denominator, or both.

Rational expressions contain variables, they can be simplified in the same way that numerical fractions are simplified.

Steps to simplify rational expressions:

Let us see it with an example:

$\frac{3 x^{2}-3 x}{3 x^{3}-6 x^{2}+3 x}$

1) Look for factors that are common to the numerator & denominator

$\frac{3 x(x-1)}{3 x\left(x^{2}-2 x+1\right)}$

2) 3x is a common factor to the numerator & denominator. Note that it is clear that x ≠0

3) Cancel the common factor

$\frac{x-1}{x^{2}-2 x+1}$

4) If possible, look for other factors that are common to the numerator and denominator

$\frac{x-1}{(x-1)(x-1)}$

5) After cancelling, you are left with $\frac{1}{(x-1)}$

6) The final simplified rational expression is valid for all values of "x" except 0 and 1

We have to follow the same procedure for any rational expression.

7 0

2 years ago