It is not because the term is used to describe the differences of a variable and a constant. Both of height and age are variables.
Hello!
4x - 9y = 20
2x - 6y = 16
You first need one of the variables have the same coefficient
We can do this by multiplying the second equation by 2
4x - 12y = 32
Subtract the equations to get rid of x
4x - 9y = 20
4x - 12y = 32
3y = -12
Divide both sides by 3
y = -4
Put y into one of the original equations
2x - 6(-4) = 16
Multiply
2x - -24 = 16
We you subtract a negative it is the same as addding
2x + 24 = 16
Subtract 24 from both sides
2x = -8
Divide both sides by 2
x = -4
The answers are x = -4 and y = -4
Hope this helps!
The original equation is
P=2L+2W
We will just switch the unknowns around. To find width (W), we must isolate it in the equation by moving 2L over to the other side:
P-2L=2W
(P-2L)/2=W
W=(P-2L)/2
There you go!!
If this is helpful, please mark me brainliest. :)
Answer:
B
Step-by-step explanation:
Trust me I got it right and you should too
Answer:C(3, –5) and D(6, 0) is;. 5x - 3y = 30.
Step-by-step explanation:
The equation of the line CD expressed in standard form which passes through the points C(3, -5) and D(6,0) is: 5x - 3y=30.
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