Answer:
17
Step-by-step explanation:
24 = 2x - 9
2x - 9 = 24
2x = 33
x = 33/2
x = 16.5
So in matt's equation, he made a mistake in the a transision from line 2 to line 3
in line 2: -4(-2)2
in line 3: -4(4)
the mistake is that -2 times 2 is not equal +4 it is equal to -4
also from lines 5 to 6 he made a mistake in order of opperations (mulit division then addition and subtract)
line 5: -10+30/5
line 6: 20/5
so he first subtracted 10 then divided, he should have divided then subtracted
so the equation should have equaled
Karen used the correct (-) times (+) property and the order of operations
so Karen is correct and Matt is wrong.
Answer:
Concept: Rectangular Figures
- We want the perimeter, we are missing side AB
- We are told AB= CD+EF+GH
- Hence: 2cm+2cm + 2 cm= 6 cm = AB
- Hence: BC= 2+3+2=7 cm
- So we have everything we need: 6+7+2+2+2+3+2+2= 25 units
Answer:
He will purchase 6000 gumballs