Answer:
2/7(x-2)=4x
(2×x-2×2)/7 = 4x
(2x-4)/7 = 4x
2x-4×(1) = 4x × 7 ( Cross multiply)
2x-4 = 28
2x = 32
2x÷2 = 32÷2
x=16
Answer:
Number of wooden carving = a
Total amount Sam spend = 1,200 + 4a
Total revenue of Sam = 15a
Number of wooden carving make to earn profit $4,300 = 500 carvings
Step-by-step explanation:
Given:
Sales price of each wooden carving = $15
Fixed cost = $1,200
Variable cost = $4 for each
Find:
Number of wooden carving make to earn profit $4,300
Computation:
Part 1
Assume
Number of wooden carving = a
Part 2
Total amount Sam spend = 1,200 + 4a
Part 3
Total revenue of Sam = 15a
Part 4
Total profit of Sam = Total revenue of Sam - Total cost of Sam
4,300 = 15a - [1,200 + 4a]
4,300 = 15a - 1,200 - 4a
11a = 5,500
a = 5,500 / 11
Number of wooden carving make to earn profit $4,300 = 500 carvings
<u>Answer:</u>
The probability that at most 10 of them will be living with both of their parents is 0.0018
<u>Solution:</u>
Given, US 1995, 70% of all children in the U.S. were living with both parents. 25 children were selected at random in the U.S.,
We have to find what is the probability that at most 10 of them will be living with both of their parents?
Now, number of children picked (n) = 25.
Probability to be with parents = 70% = 0.7.
Our condition is 0 ≤ x ≤ 10.
Then, we have to calculate p(0 ≤ x ≤ 10).
We can calculate using binomial cumulative distribution frequency- binomial CDF
Now, p(0 ≤ x ≤ 10) = binomcdf(n, p, x) = binomcdf(25, 0.7, 10) = 0.00177840 ≈ 0.0018.
Hence, the probability is 0.0018
Answer:
Note:
Three-tenths reapeating is 
