Answer:
b
Step-by-step explanation:
Answer:
x(x)=1/4(30+60+x)
Step-by-step explanation:
minutes spent on math homework= x
minutes spent on history homework= 30 min
minutes spent on English homework= 60 min
Total minutes spent on homework = x+30 +60
Also
x= 1/4(x+30 +60)
x= x/4 + 90/4
x-x/4= 90/4
(4x-x)/4=90/4
3x=90
x=30
Hence time spent on maths=30 min
total time spent= 30+60+30
= 120 min
1/4 of 120 min= 30 mins!
Answer:
Option A
. 1708 bags
Step-by-step explanation:
The picture of the question in the attached figure
step 1
Find the volume of the silo
The volume of the silo is equal to the volume of a cylinder plus the volume of a cone
so

we have

---> the radius is half the diameter


substitute


Remember that
The silo is approximately 85% full
so
The volume of grain in the silo is

step 2
Find the number of bags of grain
Divide the volume of grain in the silo by the volume of one sack

P=2L+2W
P=2*20+2*15= 40+30=70 in
A=W*L=20*15=300 in²