To divide 1/2 by 4, you can treat it as (1/2)/(4/1), and to divide fractions you flip the second fraction and multiply, so:
(1/2)*(1/4)=1/8
So each portion of chocolate was 1/8 pounds.
I think its 8 im not sure but i have the same paper and she marked mine right
Answer:
(0,-1),(2,5)
Step-by-step explanation:
3x-y=1
0.5+2x-1=y
Substitute the equation of y into the other equation
3x-(0.5+2x-1)=1
3x-0.5-2x+1=1
collect like terms
-0.5+x=0
Solve for x
x(-0.5x+1)=0
0=-0.5x+1
-1=-0.5x
x=2 x=0
Back substitute into the other original equation and solve for y
3(2)-y=1
6-y=1
y=5
(2,5)
3(0)-y=1
-1(-y)=-1(1)
y=-1
(0,-1)
Julie is correct because LxWxH only applies to 2 dimensional shapes so therefore you need to use x to the power of 3 formula
Answer:
31.5 hours
Step-by-step explanation:
Given that 1 unit of electricity is consumed in 3 hours by 1 fan, it means that 2 fans will consume 1 unit in
= 3/2 hours
= 1.5 hours
If 2 fans consume 1 unit in 1.5 hours then 21 units will be consumed in
= 21 * 1.5/1
= 31.5 hours
It means he used the fans for 31.5 hours