Answer:
r = 4/(x+y)
Step-by-step explanation:
rx + ry = 4
Factor out r
r ( x+y) = 4
Divide each side by (x+y)
r ( x+y) /(x+y) = 4/(x+y)
r = 4/(x+y)
Answer:
Tax = $4.2, Total price = $74.2
Step-by-step explanation:
Multiply 70 by 0.06 to get the price of the tax
4.2
Add 70 and 4.2 to get the total price
74.2
8a+12b because you multiply 2 by each number. For example 4a times 2 is 8a and 6b times 2 is 12b
Hope that helped :)
How to solve:
( x , y )
Plug the values in to the equation and solve
-3x+5y=2x+3y
(2,4) plugged in would be
-3(2)+5(4)=2(2)+3(4)
All you have to do is solve this and if the two sides are not equal(like 4=20), then it is not a solution. Just plug in (3,3) next.
Hope this helped!!!
20:50 as 40:100
so the answer is 40%
