Answer:
Solution: 
Step-by-step explanation:
System of equation:
Using substitution method.
substitute into
(combine like term)
(Addition property of equality)
(division property of equality)
(Taking square root)
Substitute x into
Solution: 
Now cross check the solution using graph.
Please find attachment for graph.
Hello from MrBillDoesMath!
Answer:
Choice C (6)
Discussion:
Since it is an isosceles trapezoid the length of the two legs (i.e. AB = 5y-10 and CD = 2y+8) are equal. In other words,
5y - 10 = 2 y + 8
Subtract 2y from each side:
5y - 2y - 10 = 8
Now add 10 to each side
5y - 2y - 10 + 10 = 8 + 10 =>
3y + 0 = 18 =>
3y = 18 =>
y = 6
Regards,
MrB
Answer:
(a)
perimeter = 2 + 8 + 4 + 7x + 4x
(b)
perimeter = 11x + 14
Answer:
4+x
Step-by-step explanation: