Answer:64
Step-by-step explanation:
Answer:
umm...the wording is kinda confusing but im just gonna full send and say its c
Step-by-step explanation:
sry if its wrong lol (it probably is)
Answer:
:(
Step-by-step explanation:
figure it out
Answer:
Step 2 has error and step 4 has error.
Step-by-step explanation:
Here we can see that elimination method is applied to solve the system of equations for which -2 is multiplied both sides of equation first
-2(x+2y)=-2(10 which is correct
but in step 2
left side is -2x-4y and the right side is -10 which has to be -20 which makes this step wrong and this is the error made by student.
in Step 4 also ,value of the y has to be 5 but student plugged y =1 which is also error by student.
Correct solution is
-2x-4y= -20
2x+ 5y= 15
on adding ,we get
y = -5
plugging y =5 in equation x+2y= 10 ,we get x+2(-5) =10 ,we get x = 20
therefore (20,-5) is the solution
43.5694 x 22.07
43.6 x 22.1 =963.56
= 963 3sf
