Step 2 is wrong: 4x - x = 5x
X = -11 is the actual answer, pretty sure.
Hope this helps and please mark as brainliest. If you have any other doubts, feel free to ask.
Answer:
discount:deduct an amount from (the usual price of something).
tip:give (someone) a sum of money as a reward for a service
markup:the amount added to the cost price of goods to cover overheads and profit.
Sales tax:a tax on sales or on the receipts from sales
Answer: 48 cubes in the new box
Step-by-step explanation:
Doubling the length and the width is 2×2, so 4 times the original capacity.
4×12 = 48
It is not necessary to compute the volume. The dimensions could be anything. It's the number of cubes that count.
3 multiplied by 3 is 9 so true
Answer: 17/20
Step-by-step explanation:
Let's define:
N = numerator
D = denominator.
The fraction is N/D.
We know that:
"The numerator of fraction is 3 less than denominator. "
N = D - 3
" If 5 is subtracted from both numerator and denominator, the fraction becomes 4⁄5."
(N - 5)/(D - 5) = 4/5.
Then we have a system of equations of two variables:
N = D - 3
(N - 5)/(D - 5) = 4/5.
The first step to solve this, is to replace the first equation into the second, in that way we can work with only one variable.
(D - 3 - 5)/(D - 5) = 4/5.
Now we can solve this for D.
(D - 8)/(D - 5) = 4/5
D - 8 = (D - 5)*(4/5) = (4/5)*D - 4
D - (4/5)*D = -4 + 8 = 4
(1/5)*D = 4
D = 4*5 = 20
And here we can use the first equation to find the value of N.
N = D - 3 = 20 - 3 = 17
Then our fraction is:
N/D = 17/20
