1. If x=3z +4: y = x - 4 and 2-1.5find the value of 2x + 3y - 22.
(1) 33.5 (2) 27.5 (3) 6.5 (4) 7.5
Answers
Answered by
0
Answer:
Since z = 1.5, we have
x = 3z +4 = (3 x 1.5) + 4 = 4.5 + 4 = 8.5 =
and then
y = x - 4 = 8.5 - 4 = 4.5.
Putting these values into the required expression, we get
2x + 3y - 2z
= (2)(8.5) + (3)(4.5) - (2)(1.5) =
= 17 + 13.5 - 3
27.5 =
Similar questions