Answer:
The remaining volume is:
V_pyra - V_cone = (18*14^2)/3 - (18*pi*7^2)/3 = ~252.37
Answer:
Step-by-step explanation:
I'll be solving this system of equations using the elimination method since the x and y values are neatly lined up.
I want to get a pair of x's or y's that cancel out, and it looks like the easiest way to start would be by multiplying the first equation by -2 (the y's will cancel).
I chose to multiply the first equation by -2 instead of multiplying the second equation by 5 because -2 is a smaller number and easier to multiply by.
Distribute -2 inside the parentheses. Now you've got:
Add up the equations from top to bottom.
-10x plus x is -9x, the -4y and 4y cancel out, and 16 plus 2 is 18. Make this one single equation.
Divide both sides by -9.
Substitute this value of x into the second equation (less to do with the x since it has no coefficient which means no multiplying).
Add 2 to both sides.
Divide both sides by 4.
The final answer is .
Answer:
Step-by-step explanation:
2 hours. She spent 1 hour for math which was half so the total would be 2*1=2.
1/2x=1 /x2
x=2