Find x and y in the system of equations:
2 answers:
Answer:
Y= -8
X= 3
Step-by-step explanation:
apply -(-a)=a rule
-23+4*8/3
-23+4*8=9
9/3
=3
2y-(3)=-19
y= -8
Answer:
x = 3
y = -8
Step-by-step explanation:
We have two simultaneous equations:
3x + 4y = -23
2y - x = -19
Solve for y in the second equation.
2y = -19 + x
y = -19/2 + 1/2x
Put y as -19/2 + 1/2x in the first equation and solve for x.
3x + 4(-19/2 + 1/2x) = -23
3x + 2x - 38 = -23
5x - 38 = -23
5x = -23 + 38
5x = 15
x = 15/5
x = 3
Put x as 3 in the second equation and solve for y.
2y - 3 = -19
2y = -19 + 3
2y = -16
y = -16/2
y = -8
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Step-by-step explanation:
Because if he used 3.50 dollars per a gallon that makes
6+5
=11
11*3.50
=35.5
35 / 5 = 7 ; also 49 /7 = 7
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? = 8 x 7 = 56
Answer
Missing side length = 56
The answer is c. The problem can be solved graphically
5.25+(5.25*.5) = 63/8 = 7 7/8