Answer:
Solution: x = -2; y = 3 or (-2, 3)
Step-by-step explanation:
<u>Equation 1:</u> y = -5x - 7
<u>Equation 2:</u> -4x - 3y = -1
Substitute the value of y in Equation 1 into the Equation 2:
-4x - 3(-5x - 7) = -1
-4x +15x + 21 = -1
Combine like terms:
11x + 21 = - 1
Subtract 21 from both sides:
11x + 21 - 21 = - 1 - 21
11x = -22
Divide both sides by 11 to solve for x:
11x/11 = -22/11
x = -2
Now that we have the value for x, substitute x = 2 into Equation 2 to solve for y:
-4x - 3y = -1
-4(-2) - 3y = -1
8 - 3y = -1
Subtract 8 from both sides:
8 - 8 - 3y = -1 - 8
-3y = -9
Divide both sides by -3 to solve for y:
-3y/-3 = -9/-3
y = 3
Therefore, the solution to the given systems of linear equations is:
x = -2; y = 3 or (-2, 3)
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Answer:
17.8
Step-by-step explanation:
We can find this because we know that to make a cube, we need to do 
or 
. With this, we can simplify our equation (by taking the root of both sides) to ![c=\sqrt[3]{5639.752}](https://tex.z-dn.net/?f=c%3D%5Csqrt%5B3%5D%7B5639.752%7D)
or 17.8.
Answer:
1:none
2:c
3:b
4:a
Step-by-step explanation:
75%
500-125 is 375
375/500 gives 3/4 which is .75
move the decimal over to the right twice to get 75%
Answer:
<u><em>She got 18 correct</em></u>
How to do this:
25 x 25 = 6.25 if she got it correct
20 x 25 = 5.00 - 10 - 10 -10 -10 -10 = 4.50
18 x 25 = 4.50 - 10 -10 -10 -10 -10 -10-10 = 3.80
