Answer:9
Step-by-step explanation: x+4=13
x=13-4
x=9
Answer: 4.026 x 10^0, 4.026
Step-by-step explanation:
Answer:
-1
Step-by-step explanation:
-4(y-2)=12
-4y+8=12
-4y=4
y= -1
Answer:
0.04 or 4%
Step-by-step explanation:
point estimate of proportion:
(0.6+0.68)/2
1.28/2
0.64
Margin of error:
0.68 - 0.64 = 0.04
0.04×100 = 4%