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lord [1]
2 years ago
14

Please help! 4 questions, 1. Determine if the ordered pair is a solution of the equation. Is (-1,-30) a solution of y =10x? Ques

tion 6 options: a) True b) False
2.The point (5, -1) is a solution of the equation: y = 2x − 11
options:

a) True
b) False
3.Which ordered pairs are a solution to the equation?

y = 8x
options:

a) (-1,-7)


b) (2,16)


c) (1,8)


d) (-2,-6)
Mathematics
1 answer:
e-lub [12.9K]2 years ago
7 0
1. False
2. True
3. B and C 
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Y=-4x-7, x+y=2 please help rn
Mashcka [7]
Use substitution
x -4x - 7 = 2
-3x = 9, x = -3
Y = -4(-3) - 7
Y = 12 - 7, y = 5
Solution: x = -3, y = 5
5 0
3 years ago
Read 2 more answers
5(8x-3)+4(-6x-4)<br> Distribute then simplify
Nikitich [7]

Answer:

16x - 31

Step-by-step explanation:

Write the full equation:

5(8x - 3) +4(-6x - 4)

Distribute:

40x - 15 - 24x - 16

Combine Like Terms:

16x - 15 - 16

Your answer is:

16x - 31

5 0
2 years ago
Read 2 more answers
Solving systems equations by elimination
pishuonlain [190]
I won't answer them all for you (don't want to cheat - need to learn something).
But for the first one given:

<span>-2x-9y=-25
-4x-9y=-23

you set up either x or y (which ever one you want to eliminate) so that one of them cancels.
So this one is easy - you just have to multiply an entire row by negative (doesn't matter which one) - so that the y's will be + and - 

Since they're both 9 and they're subracting NOW - you can eliminate the y value. Now add/subtract the x's. So it'd be -2 or 2 depending on how you eliminated y. Then add the number outside of the = sign. Now just solve for x. After that plug in whatever you got for x into both of the rows. Then find the y value.

Hopefully this wasn't confusing -- reply if it is and I will try to simplify. I can give you contact if you need help with the rest 

Good luck!</span>
3 0
2 years ago
The quantity of 6 less than a number multiplied by 8
Bas_tet [7]

6x-6=8x

subtract 6x from both sides

-6=2x

divide both sides by 2

x= -3

5 0
3 years ago
The area of the base of a cylinder is equivalent to the base of a circle? A) True. B) False​
gogolik [260]

Answer:

Yes

Step-by-step explanation:

The base of both the cylinder and Circle are both circles.

3 0
3 years ago
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