Answer:
Step-by-step explanation:
Seperate the shape into two. 16x2=32cm². 12x11=132cm²
So altogether it would = 164cm²
Answer: 132.665 hope it's right but I think it's right but i don't know
Step-by-step explanation:
Answer: 196
Step-by-step explanation:
As per given , we have
Population standard deviation:
Significance level :
Using the z-value table , the critical z value for 98% confidence :
Margin of error : E= 01 lb
Sample size :
Simplify , we get
Hence, the minimum sample size required for books = 196
Answer: 1 9/16
Step-by-step explanation:
1. Switch the numerator and the denominator of the second fraction. (5/8 ÷ 2/5 = 5/8 x 5/2)
2. Multiply the two fractions. (5/8 x 5/2 = 25/16)
3. Simplify the answer. (25/16 = 1 9/16)
Answer:
The correct answer is:
(a) Mean = 170,
Standard deviation = 30
(b) 1700
Step-by-step explanation:
Given:
(a)
Mean of monthly expenses will be:
=
=
=
Standard deviation will be:
=
=
=
(b)
The total amount of monthly expenses will be:
=
=
=