Answer:
<h3>15%</h3>
Step-by-step explanation:
<h3>First , We will solve their daily Income </h3>
• Income = spends / rate
• Income = 600 / 40%
• Income = 600 / 0 .40%
• Income = 1500
Thus , Their daily Income is 1500 . Now ,We will solve for the rate of the Allowance .
• Rate = spent / Income
• Rate = 225 / 1500
• Rate = 0.15
• Rate = 15%
Therefore, the percent of the family's daily Income of the Allowance of their children's is 15%
<h3>Hope this helps you XD ✌️</h3><h2>Carry on learning !! </h2>
Answer:
7%
Step-by-step explanation:
Number of faces: F=a+3
Number of vertices: V=2a
Number of edges: E=4a-1
V+F-E=2
Replacing V=2a; F=a+3; and E=4a-1 in the formula above:
(2a)+(a+3)-(4a-1)=2
Eliminating parentheses:
2a+a+3-4a+1=2
Adding similar terms:
(2+1-4)a+(3+1)=2
(-1)a+4=2
Solving for a. Subtracting 4 both sides of the equation:
(-1)a+4-4=2-4
(-1)a=-2
Dividing both sides by (-1)
(-1)a/(-1)=-2/(-1)
a=2
Answer: The value of a is: a=2
Answer:
it is -12, -6, -4, -3, 1, 4
Answer:
14.2, 16.96
Step-by-step explanation:
given is a probability distribution of X
X is discrete taking values as 7, 11, 15 and 19
X 7 11 15 19 total
p 0.10 0.35 0.20 0.35 1
x*p 0.7 3.85 3.0 6.65 14.20
x^2*p 4.9 42.35 45 126.35 218 .60
Hence mean = sum of prob (x) = 14.20
