2(2.5-(5/6))
2(1 2/3)
3 1/3
Let the amount of stamps Mari has be “m”. Since Carlos has 5 more stamps than Mari, Carlos will have 5+m stamps. Amanda has three times as many stamps as Carlos so that will be 3(5+m)=15+3m.
m+(5+m)+(15+3m)=100
5m+20=100
5m=80
m=16
Mari=16
Carlos=16+5=21
Amanda=15+48=63
To find 4/16 as a percentage you can take 4/16=.25 and to turn a decimal into a percentage just move the decimal two places to the right. Giving you the percentage of 25%.
Hope this helps!=)
If 310 is 30% of some number x, then
0.30x = 310
⇒ x = 310/0.30
⇒ x = 310/(3/10)
⇒ x = 310 × 10/3
⇒ x = 3100/3 ≈ 1033.33
The formula for the volume of a cone is V =PI x r^2 x h/3
r is given as as 8 and h is given as 63.
V = PI x 8^2 * 63/3
V = PI x 64 x 21
V = PI x 1344
Volume = 1344 PI cu. units.
The answer is D.
