Answer:
Step-by-step explanation:
X + y - Z=3 ------------------(I)
2y + 2z = 6 ------------------(II)
-2y - Z = -2 ------------------(III)
Multiply equation (III) by 2 and add equation (II) & (III)
(II) 2y + 2z = 6
(III)*2 <u>-4y - 2z = -4</u> {Now add and z will be eliminated}
-2y = 2
y = 2/-2
y = -1
Plugin y =-1 in equation (II)
2*(-1) + 2z = 6
-2 + 2z = 6
2z = 6 + 2
2z = 8
z = 8/2
z = 4
Plugin y = -1 & z = 4 in equation(I)
x - 1 - 4 = 3
x - 5 = 3
x = 3 + 5
x = 8
Angle 1 and 6 are supplementary
Answer:
do you know the answer?
Step-by-step explanation:
2 hours because 6 times 2 = 12 and 4 times 2 = 8 and 8 + 12 =20
There were 40 questions on the test. You take the amount of questions you got right, 32, and divide that by the percentage you got, 80% (.80).
32 / .80 = 40. 40 questions on the test.
