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prisoha [69]
2 years ago
5

-4x+8y=-256 -6y = x. how do u solve this equation by substitution.

Mathematics
1 answer:
serious [3.7K]2 years ago
4 0
To make it soo much easier, divide top equation by 4
-x+2y=-64

now
-6y=x
sub -6y for x
-(-6y)+2y=-64
6y+2y=-64
8y=-64
divide both sides by 8
y=-8

sub back
-6y=x
-6(-8)=x
48=x

x=48
y=-8
(x,y)
(48,-8)
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AveGali [126]

Answer:

  m∠CDE = 35°

Step-by-step explanation:

The exterior angle CDE is equal to the sum of the opposite interior angles, BCD and DBC. So, you have ...

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  3x -24 = 0 . . . . . . . . . . . . subtract the right side, simplify

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3 years ago
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6 0
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Mona wants to obtain a 94% confidence interval for the mean weight of turtles. She read in the Big Book of Turtles that the stan
mel-nik [20]

Answer:

87

Step-by-step explanation:

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3 years ago
An ordinary (fair) die is a cube with the numbers
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5 0
3 years ago
Please help with this im really confused and please explain abit with words. please and thanks!
Hatshy [7]

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on checking, the given shape values of x-25 and x - 15 are both still obtuse angles thus the answer is correct.

5 0
3 years ago
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