76/4=19 So with 19 questions correct and 10 incorrect, 29 questions were on the test. p.s. If I misunderstood and this isn't answering all your questions just comment or pm.
7.
15/2= 7.5
you cant get 7 and a half action figures so round down to 7
Answer:
x = 0
y = 5
z = -5.
Step-by-step explanation:
X-5y-z=-20
-2x-y-6z=25
-x-4y-z=-15
Add equation 1 and 3:
-9y - 2z = -35 .......... A
Multiply the first equation by 2:
2x - 10y - 2z = -40
Now add this to equation 2:
-11y -8z = -15.............B
Now multiply equation A by -4:
36y + 8x = 140.........C
Add equations B and C:
25y = 125
y = 5.
Substitute for y in equation A:
-9*5 - 2z = -35
2z = -45 + 35 = - 10
z = -5.
Now find x by substituting for y and z in the first equation:
x - 5(5) - (-5) = -20
x - 20 = -20
x = 0.
Answer:
a relationship or expression involving one or more variables
7(-6x)
its been a long time since ive done something like this lol
