Answer:
it would be C do to the fact that 0.5 x 8=4
Answer:
The sale this month = 79
Step-by-step explanation:
Let the amount he needs to sell this month = x
![Average = \frac{sum\ of\ individual\ data\ }{number\ of\ entries}](https://tex.z-dn.net/?f=Average%20%3D%20%5Cfrac%7Bsum%5C%20of%5C%20individual%5C%20data%5C%20%7D%7Bnumber%5C%20of%5C%20entries%7D)
![Average= \frac{90\ +\ 45\ +\ 103\ +\ 68\ +\ x}{5}](https://tex.z-dn.net/?f=Average%3D%20%5Cfrac%7B90%5C%20%2B%5C%2045%5C%20%2B%5C%20103%5C%20%2B%5C%2068%5C%20%2B%5C%20x%7D%7B5%7D)
Note that number of entries = number of months = 5
To maintain an average sales of 77, the amount of sale in month 5 is determined as follows:
![77 = \frac{306\ +\ x}{5} \\cross-multiplying\\77\ \times\ 5\ = 306\ +\ x\\385 = 306\ +\ x\\x =385\ -\ 306\\x = 79](https://tex.z-dn.net/?f=77%20%3D%20%5Cfrac%7B306%5C%20%2B%5C%20x%7D%7B5%7D%20%5C%5Ccross-multiplying%5C%5C77%5C%20%5Ctimes%5C%205%5C%20%3D%20306%5C%20%2B%5C%20x%5C%5C385%20%3D%20306%5C%20%2B%5C%20x%5C%5Cx%20%3D385%5C%20-%5C%20306%5C%5Cx%20%3D%2079)
Long piece: 5x + 3
Short piece: x
Long + Short = Total
5x + 3 + x = 45
6x + 3 = 45
6x = 42
x = 7
Long piece: 5x + 3 = 5(7) + 3 = 35 + 3 = 38
Answer: short = 7 ft, long = 38 ft
Answer:
2000
Step-by-step explanation:
1600 is 100% - 20% = 80% of the original price.
So it is 4/5 of the original price.
So, the marked price is 1600 * 5/4 = 2000
Answer:
150m^2
Step-by-step explanation:
Given data
a=8m
b=17m
h=12m
We know that the expression for the area of a trapezoid is given as
Area= (a+b/2)*h
substitute
Area= (8+17/2)*12
Area= 25/2 *12
Area= 12.5*12
Area= 150 m^2
Hence the area is 150m^2