Answer:
Step-by-step explanation:
Answer:
it should be 5
Step-by-step explanation:
do you have a z table chart to look at?
find Z= 0 should show that z=0 = 0.500
and z=2.16 = 0.9846
subtract them
0.9846-0.500 = 0.4846 is the area
Answer:y=-2(x-1)-4
Step-by-step explanation:
you need to isolate Y. and 4 is in the same group on the plus so you move it by subtracting and adding a negative on the other side.
Answer:
- v = 8
- x = -12
Step-by-step explanation:
1. I like to work with positive numbers, so the first thing I'd do is multiply the equation by -1.
2v + 7 = 23
2v = 16 . . . . . subtract 7
v = 8 . . . . . . . divide by 2
<em>Check</em>
-2(8) -7 = -23 . . . . true
___
2. (x/4) -5 = -8
x/4 = -3 . . . . . . . add 5
x = -12 . . . . . . . . multiply by 4
<em>Check</em>
(-12/4) -5 = -8 . . . . true
