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3 years ago

Solve the inequality –24 ≤ x – 3 – 8x.

1 answer:

5 0

Combine like terms: –24 ≤ x – 3 – 8x => -24 + 3 ≤ x - 8x, or
-21 ≤ -7x

Solve for x. Very important: If we divide an inequality by a negative number, we must change the direction of the inequaltiy sign:

-21
----- $\geq$ x, or 3 $\geq$ x
- 7

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Solve for x. 2x + 9 = 33 What is the answer? A 7.5 B 12 C 21 D 84

Valentin [98]

B, because you subtract 9 from both sides(2x-9 leaves 2x by itself then 33-9=24), which leaves you with 2x=24 the you divide everything by 2 which leaves you with x=12

8 0

4 years ago

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Which of the points listed below is not on the line with equation 7y+2=3x-5

kicyunya [14]

Answer: Second option.

Step-by-step explanation:

Given the folllowing Linear Equation:

$7y+2=3x-5$

You need to substitute the coordinates of each point given in the options into the equation and then evaluate.

1) Substituting $(2, -\frac{1}{7})$ into the equation, you get:

$7(-\frac{1}{7})+2=3(2)-5\\\\-1+2=6-5\\\\1=1\ (TRUE)$

2) Substituting the point $(3, -\frac{3}{7})$ . you get:

$7(-\frac{3}{7})+2=3(3)-5\\\\-3+2=9-5\\\\-1=4\ (FALSE)$

3) Apply the same procedure using the point $(1, -\frac{4}{7})$ :

$7(-\frac{4}{7})+2=3(1)-5\\\\-4+2=3-5\\\\-2=-2\ (TRUE)$

4) Apply the same procedure using the point $(-1, -\frac{10}{7})$

$7(-\frac{10}{7})+2=3(-1)-5\\\\-10+2=-3-5\\\\-8=-8\ (TRUE)$

5) Substituting $(0,-1)$ into the equation:

$7(-1)+2=3(0)-5\\\\-7+2=-0-5\\\\-5=-5\ (TRUE)$

Therefore, the point $(3, -\frac{3}{7})$ is not on the given line.

8 0

3 years ago

-1 < x < 4 x is an integer. Write down the possible values of x.

bogdanovich [222]

Answer:

0, 1, 2, 3

Step-by-step explanation:

-1 < x < 4 means that x has to be an integer (whole number aka no fractions) between -1 and 4. Note that the < and > means that x cannot be -1 or 4 since it has to be greater than -1, or smaller than 4.

7 0

2 years ago

I just need help because i dont understand it

Y_Kistochka [10]

Answer:

Step-by-step explanation:

2 times 4 is 8

4 0

3 years ago

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Help me ASAP i always give brainliests, and thanks i need u!

pychu [463]

Answer:

Answer is (4) -11.333

Step-by-step explanation:

multiply : 2x /12-4/3= 4x /15 -1/5

bring variable on one side :

2x/12 -4x/15= 4/3 - 1/5

common denominator : -6x/60=17/15

simplify : -x/10= 17/15

x= - 170/15= -11.3333

7 0

3 years ago

Read 2 more answers