7x-3y=15 is the equation in standard form.
2.2 - 2.5 - 3.4
-3.7
.................
Each grandchild receives x.
Each child receives 2 times as much as a grandchild, so each child receives 2x.
The wife receives 5 times as much as a child, so the wife receives 5 * 2x = 10x.
There is 1 wife: 10x
There are 2 children: 2 * 2x = 4x
There are 3 grandchildren: 3x
Total: 10x + 4x + 3x = 17x
17x = 510,000
x = 30,000
Answer:
Each grandchild gets $30,000.
Each child gets 2 * $30,000 = $60,000.
The wife gets 10 * $30,000 = $300,000.
Answer:
a) P(x>8) = 0.3937
b) P(x = 2) =0.04661
Step-by-step explanation:
a) From to find the probabilty that in this specific time period, more than 8 cars arrive at the intesection, we use the probability function thus
P(x>8) = 1 - P(x≤8), Cause you can use the complement for calculate this probability , then:
P(x≤8) =
, until x= 8, then you obtain:
P(x≤8)=0.6063 and
P(x>8) = 1 - P(x≤8)= 1-0.6063 = 0.3937
b) P(x=2)= 
P(x = 2) =0.04661