Answer:
1) 14 2) 6 3) 53 4)-2
Step-by-step explanation:
1) 15 - n/7 = 13
7*15 - 7*n/7 = 7*13
105 - n = 91
-n = 91 - 105
-n = -14
n = 14
2) 44 = - 4 + 8p
-8p = - 4 - 44
-8p = -48
-p = - 48/8
-p = 6
3) 21 - h= -32
-h = -32 -21
-h = -53
h = 53
4) -19 = 11b + 3
-11b = 19 + 3
-11b = 22
-b = 22/11
-b = 2
b = -2
Answer:
17.89 :)
Step-by-step explanation: hii
Answer:
7
Step-by-step explanation:
σ = 4 ; μ =?
8.52 to the left of X
.
P(X < 8.52) = 64.8%
P(X < 8.52) = 0.648
Using the Z relation :
(x - μ) / σ
P(Z < (8.52 - μ) / 4)) = 0.648
The Z value of 0.648 of the lower tail is equal to 0.38 (Z probability calculator)
Z = 8.52 - μ / 4
0.38 = 8.52 - μ / 4
0.38 * 4 = 8.52 - μ
1.52 = 8.52 - μ
μ = 8.52 - 1.52
μ = 7
