B. 6
Explanation: 8(6+4)= 80
38+ 7(6)= 80
Answer: The answer is 870
If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.
Answer:
46.86
Step-by-step explanation:
a^2+b^2=c^2
30^2+36^2=c^2
2196=c^2
Square root both sides
46.86=c
Add both the equations together to eliminate x
x+5y=8
-x+2y=-1
7y=7
y=1
Now fill in y into the original equation
x+5(1)=8
x+5=8
x=3
Now you can check by filling x and y into the second equation.
-(3)+2(1)=-1
-3+2=-1
-1=-1
So your answer will be (3, 1)
Brainliest my answer if it helps you out?
6.25 is the answer to the problem
