Answer:
x + y = 10
15x + 10y = 120
Step-by-step explanation:
The khakis and polos have to be added up to equal 10 like this: x + y = 10
Since it costs $15 for every khaki, multiply x by 15 like this: 15x
Since it cost $10 for every polo, multiply y by 10 like this: 10y
These all add up to $120, meaning we add up 15x and 10y to equal 120
15x + 10y = 120
Answer:
(x + 10 and (x + 12)
Step-by-step explanation:
x^2 + 22x + 120 = ( ? )( ? )
We need to find two constants whose product is 120 and whose sum is 22.
Let the two constants be a and b. Then:
a*b = 120 and a + b = 22.
It's a bit easier to find a and b such that a + b = 22: 2 and 20, 4 and 18, 6 and 16, and so on. Note that 6 + 16 = 22 (correct) but that 6*16 = 96 (not correct). Try 8 and 14, 10 and 12. Note that 10 + 12 = 22 and that 10*12 = 120. So the desired roots are {10, 12} and the desired factors are (x + 10 and (x + 12).
Check: Does (x + 10)(x + 12) work out to x^2 + 22x + 120?
x^2 + 12x + 10x + 120 = x^2 + 22x + 120? YES
The factors are (x + 10 and (x + 12).
Answer:
A. 4X4X4X4X4
C. 45
E. 201
Step-by-step explanation:
I hope this helps
Answer:
Step-by-step explanation:
Rationalize the denominator first (keep in mind we are NOT solving this because there is no equals sign here. We are merely simplifying.)
Now simplify by taking the square root of 100 to get:
Divide numerator and denomiator by 10 to get: