Answer: y/2
Step-by-step explanation:
Since the x would equal to 3’s and the y equals to 2’s then it would basically be simplified to y/2
2x+3y=45
x+y=10
Take the bottom equation and solve for y
x+y=10
Subtract x from both sides
y=-x+10
Substitute into the top equation
2x+3(-x+10)=45
2x-3x+30=45
Subtract 30 from both sides + add like terms
-x=15
Divide both sides by -1
x=-15
Answer:
11
expression: 6(2)-1
Step-by-step explanation:
6*2=12
12-1=11
Answer:
The answer is 16%
Step-by-step explanation:
use the percent error formula.
![\frac{|E-T|}{|T|} *100](https://tex.z-dn.net/?f=%5Cfrac%7B%7CE-T%7C%7D%7B%7CT%7C%7D%20%2A100)
in this problem,
e= 75
t=90
substitute and solve.
![\frac{|75-90|}{|90|} *100\\\frac{|-15|}{|90|}*100\\\\ .16667*100\\](https://tex.z-dn.net/?f=%5Cfrac%7B%7C75-90%7C%7D%7B%7C90%7C%7D%20%2A100%5C%5C%5Cfrac%7B%7C-15%7C%7D%7B%7C90%7C%7D%2A100%5C%5C%5C%5C%20.16667%2A100%5C%5C)
16%
we are dealing with percents so rounding to nearest whole number will suffice.
hope this helps!