Ok so we have 2 equations here...
x + y = 76
1/3x + 1/2y = 34
First solve for x in the 1st equation...
x + y = 76
x = 76 - y
Now substitute 76-y for x in the 2nd equation...
1/3x + 1/2y = 34
1/3(76-y) + 1/2y = 34
76/3 - 1/3y + 1/2y = 34
-1/3y + 1/2y = 34 - 76/3
-2/6y + 3/6y = 34 - 25 1/3
1/6y = 8 2/3
y = 8 2/3 ÷ 1/6
y = 8 2/3 × 6
y = 52
Now substitute 52 into the 1st equation for y
x + y = 76
x + 52 = 76
x = 76 - 52
x = 24
The 2 numbers are 24 and 52.
The difference between the numbers is
52 - 24 = 28
6 thousands make 60 hundreds
A. His answer is incorrect. 2 cubed is 2 X 2 X 2, which is 8. Add 4 and you have the answer of 12.
B. He may have multiplied 2 X 3 and then added 4, instead of multiplying 2 three times.
Answer:
16 ft
Step-by-step explanation:
Slant Height=sqrt(Radius^2+Height^2)
Height=sqrt(20^2-12^2)=sqrt(256)=16 ft
