Simply the equation by using cross-multiplication, you get 30=5q
Then you swap sides of the equation, you get 5q=30
Then you divide both sides of the equation by 5
Your answer is q=6
Volume of a cone = 1/3 × pi × radius ( squared ) × height .
radius = diameter / 2
= 8 / 2
= 4 m
height = 9m
pi = 3.14
volume = 1/3 × 3.14 × 4^2 × 9
= 1 / 3 × 3.14 × 16 × 9
= 150.72 meters cubed
HOPE I HELPED !!
Write the situation as a simultaneous eqution:
x+y=87
10x+5y=545
Now solve for y by multiplying the whole of the first equation by the coefficient of x:
10x+10y=870
10x+5y=545
5y=325
y=65 nickels in the box
x+y=87
x=22 dimes in the box
To prove this is correct, we do (10 x 22)+(5 x 65)=545 cents ($5.45)
