Answer:
it says round to the nearest 10th so it wouldn't be 81, it would be 81.8%
Answer:
x=17
Step-by-step explanation
i just did the exact same question on a test and got it right .
Equation 1 ==> y - x = -13
Equation 2 ==> -4x + 3y = -51
3(y - x) = 3(-13)
Equation 3 ==> 3y - 3x = -39
Equation 2 - 3
= (3y - 3y) + ( -4x - (-3x) ) = -51 - (-39)
-x = -12
x = 12
Substitude x into equation 1
y - 12 = -13
y = -1
No because the sum could also be irrational number which for example it could be square root of 9 or 49
Hope this helps answer your question
Answer:
Step-by-step explanation:
