Answer:
d
Step-by-step explanation:
Solution by substitution method
y=7x+8
∴y-7x=8
and y=x+20
∴y-x=20
Suppose,
-7x+y=8→(1)
and -x+y=20→(2)
Taking equation (1), we have
-7x+y=8
⇒y=7x+8→(3)
Putting y=7x+8 in equation (2), we get
-x + 7x + 8 = 20
6x = 20-8
6x = 12
x= 12 / 6
x = 2
substitute for x in equation (3)
y = 7(x) + 8
y = 7(2) + 8
y = 22
Answer:
The area of the entire rectangle is given by: x^3 + 11x^2 + 18x
Step-by-step explanation:
The calculation of its area is straightforward, we only need to multiply its height times its width:
A = (x + 9)(x^2 + 2x)= x^3 + 2x^2 + 9x^2 +18x = x^3 + 11x^2 + 18x
Therefore the are are of the entire rectangle is given by: x^3 + 11x^2 + 18x
Answer:
b number is a solution of in equality
Answer:
ABC
Step-by-step explanation:
the middle point is called the vertex and it's always the middle letter of the angle name
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