Solution :
Let :
X = number of overtime hours
S = total weekly salary
S = 
S = 480 + 18X
E(S) = 

= 750
Mean of S = 750
Var (S) = 
Var(S) = 
= 5184
Variance of S = 5184
The standard deviation equals square root of 5184 = 72
x
=
√
7
+
5
,
−
√
7
+
5
x
=
7.64575131
…
,
2.35424868
…
Answer:
150 lemon jellybeans
Step-by-step explanation:
Add the ratios up to get 12 lemon jelly beans out of 64 jellybeans.

Cross multiply:
9600 = 64x
---> x = 150 lemon jellybeans
Complementary angles equal 90 degrees. The ratio is 2:3.
2+3=5
90/5=18
2(18):3(18)
36 degrees, 54 degrees