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3 years ago

10

-56 less than or equal to -8x

1 answer:

nikitadnepr [17]3 years ago

4 0

$-56 \leqslant -8x$

Divide by -8 (change inequality sign direction)

$7 \geqslant x$

Response:

$x \leqslant 7$

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Algebra II Help??? Subtracting Fractions<br><br> (2x)/(y^2-x^2) - (x)/(y-x)

denis23 [38]

Make bottom number same

ok, so remember
(a-b)(a+b)=a²+b²
so

to get from (y-x) to (y²-x²), multiply 2nd fraction by (y+x)

so multiply 2nd fraction by (y+x)/(y+x)
$\frac{2x}{y^2-x^2}- \frac{(y+x)(x)}{y^2-x^2}$ =
$\frac{2x-x(x+y)}{y^2-x^2}$ =
$\frac{2x-x^2-xy}{y^2-x^2}$

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3 years ago

How many times did Emmy get her<br> hair cut in the year?

Setler79 [48]

Answer:

5

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

baherus [9]

Answer:

$\huge \colorbox{red}{ \rm (3x - 7)(x + 1)}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

factoring
PEMDAS

<h3>tips and formulas:</h3>

quadratic expression:ax²+bx+c

factoring quadratic:

Find two numbers that multiply to give ac, and add to give b
rewrite the middle with those numbers
factor out common terms
group

<h3>let's solve:</h3>

a is 3 and b is -7

$\quad ac=3\times -7$

therefore

$\quad ac=-21$

now we need to find two numbers that give -21

to do so we need to find the factors of 21

which are

$\quad 1,3,7$

likewise,

$\quad -1,-3,-7$

in this case we can take any two numbers from negative and positive factors that give us -21 and -4

3 and -7 are the two numbers that multiply to give -21 (3×-7=-21) and add to give -4. (3+(-7)=-4)

now let's factor:

$\sf rewrite \: - 4x \: as \: 3x - 7x : \\ \rm {3 x}^{2} + 3x - 7x - 7$
$\sf factor \: out \: 3x : \\ \rm 3x(x + 1) - 7x - 7$
$\sf factor \: out \: - 7 : \\ \rm 3x(x + 1) - 7(x + 1)$
$\sf \quad group : \\ \quad \rm (3x - 7)(x + 1)$

$\text{And we are done!}$

6 0

3 years ago

Read 2 more answers

If you multiply an inequality by a negative number _____.

sergeinik [125]

Answer:

<h2>A. Switch the inequality sign</h2>

Step-by-step explanation:

When multiplying, you must switch the inequality sign. This is also true when dividing.

EXAMPLE 1:

-4r < -21

Note: We reversed the inequality sign when we divided by -4

r > 5 1/4

EXAMPLE 2:

x/-5 <u>></u> 7

Note: We reversed the inequality sign when we multiplied by -5

x <u><</u> -35

I'm always happy to help :)

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3 years ago

11. Write the equation of the line in slope-intercept form that is parallel to the line y = - 4x + 2 and

notsponge [240]

Answer:

y= -4x

Step-by-step explanation:

hope this helps and lmk if you need anything!

5 0

3 years ago