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3 years ago

15

6-129. Nick represented the equation 3(2x+4)=-6 on the Equation Mat below. Choose a strategy to solve for x. You may continue to

use algebra tiles, or you may use symbols on paper.

1 answer:

poizon [28]3 years ago

3 0

Answer:

x = -3

Step-by-step explanation:

You have the following equation:

$3(2x+4)=-6\\$

you first you distribution property in order to eliminate the parenthesis:

$3*2x+3*4=-6\\\\6x+12=-6$

next, you subtract 12 in both sides of the equation:

$6x+12-12=-6-12\\\\6x=-18$

Finally, you divide the equation by 6 and simplify:

$\frac{6x}{6}=-\frac{18}{6}\\\\x=-3$

hence, the solution to the equation is x = -3

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garri49 [273]

Answer:

Choice C is the answer.

Known information:

a = adult $

s = student $

We have 2 adults and 3 students.

Step-by-step explanation:

To find the total price of tickets given a # of students and adults, multiply a by the # of adults and multiply s by the # of students. Therefore, it would look like this:

2a + 3s = price

Therefore, choice C is the answer.

Hope this helps!

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2 years ago

Mariam's uncle donates 120 cans of juice and 88 packs of cheese crackers for a school picnic each student must receive the same

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3 years ago

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100 POINTS HELP ASAP Linear Combination

notka56 [123]

Answer:

1) $x=\dfrac12$

2) $n = -3 \ \ \textsf{and} \ \ m = -4$

3) see below

4) A: 0 = 1

Step-by-step explanation:

<u>Question 1</u>

$15-0.5(4x-2)+4x=17$

$\implies 15-2x+1+4x=17$

$\implies 2x+16=17$

$\implies 2x=1$

$\implies x=\dfrac12$

<u>Question 2</u>

$\textsf{rearrange} \ n=m+1 :$

$\implies -m=-n+1$

$\textsf{add equations} \ -m=-n+1 \ \textsf{and} \ m=2n+2:\\$

$\implies0=n+3$

$\implies n=-3$

$\textsf{substitute} \ \ n=-3 \ \ \textsf{into} \ \ m=n-1:$

$\implies m=-3-1$

$\implies m=-4$

<u>Question 3</u>

subtract the second equation from the first

divide both sides by -4

substitute found value for y into first equation

solve for x

<u>Question 4</u>

$3j=k$

$k=3j+1$

$\textsf{rearrange} \ 3j=k :$

$\implies -k=-3j$

$\textsf{add equations}\ -k=-3j \ \ \textsf{and}\ \ k=3j+1:$

$\implies 0=1$

Solution = A

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2 years ago

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gregori [183]

Answer:

b = 1

b = -1

a = 0

Step-by-step explanation:

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3 years ago

a rectangular laboratory has a length equal to one and a half times its width and a perimeter of 40m. find its length and width

tresset_1 [31]

L=1.5w
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40=2.5 w
W=16
L=1.5(16) =24

Length is 24
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2 years ago

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