Answer: One DVD is $12 and one book is $1
Step-by-step explanation:
Let the DVD be d and the book be b.
Case 1:
3d + 4b = $40.......(1)
Case 2:
1d + 6b = $18........... (2)
In this equations above, I intend to eliminate variable d, so I'm going to multiply the coefficient of d in (1) to multiply (2)
3 × (1d + 6b = 18)
3d + 18b = 54........ .(3)
Then, subtract (1) from (3)
3d + 18b = 54
- ( 3d + 4b = 40)
3d - 3d + 18b - 4b = 54 - 40
0 + 14b = 14
b = 14/14
b = 1.
Then substitute 1 for b in (2)
1d + 6(1) = 18
d + 6 = 18
d = 18 - 6
d = 12.
(d,b) = (12,1)
Answer:
Hello there, please see step by step explanations to get answer.
Step-by-step explanation:
Given that:
The asset requires a capital investment of $100 comma 000100,000, and MARR is 1212% per year. Use Monte Carlo simulation and generate four trial outcomes to find its expected equivalent AW if each useful life is equally likely to occur.
Please checj attachment fir clarity if answer and solving.
X is 9 over 2! If the question requires a decimal point, put 9/2 into the calculator!
Answer:
1.5 feet
Step-by-step explanation:
1 inch = 3 feet
Height: 0.5 inches = 1.5 feet (0.5 * 3 = 1.5)
Length: 2 inches = 6 feet (2 * 3 = 6)
Hope that helps!
Let sister be s. Matthew, M
Matthew is 7years older than twice the age of his sister
M = 7 + 2s
13 = 7 + 2s. 7 crosses the equality to other side and becomes -7
13 - 7 = 2s
6 = 2s Divide both sides by 2
6/2 = 2s/2
3 = s
Sister is 3 years old.
