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polet [3.4K]
3 years ago
7

Solving systems by elimination 9x+3y=-3 2x-3y=-8

Mathematics
1 answer:
Alona [7]3 years ago
5 0

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

x

=

−

1

Step-by-step explanation:

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I dont understand how to do this please help me i want to get a good grade​
horsena [70]

Answer:

y =20

Step-by-step explanation:

you have to get the y by itself so what you do on one side you do to the other. subtract 12 on both sides and you get y=20

7 0
3 years ago
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I need help omg thanks !
coldgirl [10]

Answer:

<em>Option C.</em>

Step-by-step explanation:

If you subtract each value from the next one, you see the differences are different. Therefore, it is not linear. Now divide each value by the previous value. You get 1.7 each time.

Answer: Option C.

6 0
3 years ago
A painting is 6 in tall and 4 in wide. if it is reduced to a width of 2 in then how tall will it be?
Vlada [557]

6 inches squared is your answerStep-by-step explanation:4/2=2 6/2=3

3times 2 equals 6

8 0
3 years ago
7TH GRADE MATH! PLEASE HELP BRAINLIEST ANSWER!
Harlamova29_29 [7]
<span>If y varies directly with x, the formula of the equation is y=ax, where a is a constant.
y=ax
(21)=a(7)
a=3
y=ax
y=(3)(-1.66)
y=-4.98, x=-1.66

If y varies inversely with x, the formula of the equation is y=a/x, where a is a constant
y=a/x
9=a/2.5
a=22.5
y=22.5/x
y=22.5/-0.6
y=-37.5

I hope this helped! =)
I hope you didn't mind but I got this from a website called: answers.yahoo.com but I got your answer.
</span>
3 0
3 years ago
Read 2 more answers
Determine whether the equation is always sometimes or never true 2(5x+4)=10x+6
Usimov [2.4K]
This equation is NEVER true. Let's solve the equations algebraically by applying the Distributive Property of Multiplication and transposing the terms across the equality sign. The solution is as follows:

<span>2(5x+4)=10x+6
10x + 8 = 10x + 6
10x - 10x = 6 - 8
0 = -2

Therefore, it is not true.</span>
3 0
3 years ago
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