Answer:
(x, y) = (1, 4)
Step-by-step explanation:
Given: x+y=5 and 2x-y=-2
Solve for y and x
x+y=5; solve for y
y = 5 - x; substitute into other equation
2x-y= -2
2x - (5 - x) = -2
2x - 5 + x = -2; combine x's
3x - 5 = -2; add 5 to both sides
3x =3; divide by 3
x = 1; use this to solve for y
x+y=5
1 + y = 5; subtract 1 from both sides
y = 4
(x, y) = (1, 4)
Answer: 
Step-by-step explanation:
For this exercise you need to find the Least Common Multiple (LCM).
The steps two find the Least Common Multiple are shown below:
1. Descompose the numbers into their prime factors.
2. Multiply the commons an non commons with the highest exponent. The product obtained will be the Least Common Multiple.
Knowing this, you can find the Least Common Multiple between 7 and 11. This is:

Therefore the smallest number of biscuits each must have baked is: 
Answer:
I think it is 272
Step-by-step explanation:
Not every month has the same amount Winter is about 89 days long. -- Autumn is 90 days. -- Spring is 93 days
Answer:
Hey there!
7-1-299-689+478*84588
7-1-299-689+40433064
40432082
Let me know if this helps :)
Answer:
range = maximum value - minimum value
Step-by-step explanation:
so here..the maximum value is 20 and the minimum value is 7
20-7 is 13=range