Answer:
20:24, 30:36, 40:48
Step-by-step explanation:
Answer:
no solutions
Step-by-step explanation:
5 -2 sqrt(x) = 11
Subtract 5 from each side
5- 5 -2 sqrt(x) = 11-5
-2 sqrt (x) = 6
Divide each side by -2
-2/-2 sqrt(x) = 6/-2
sqrt(x) = -3
The sqrt(x) must be 0 or positive
no solutions
Answer:
There are 38 girls, 57;32
Step-by-step explanation:
57 divided by 3 is equal to 19
19 multiplied by 2 is equal to 38
So
p1 can paint hours in 10 hours, so 1/10 house per 1 hour
p2 can paint house in 6 hours so 1/6 house per 1 hour
if both start at 8:00, when finish??
find how many hours they take
1 hour=p1+p2=1/10+1/6
just add 1/10 and 1/6 and see how many to get 1/1 house done
1/10+1/6=3/30+5/30=8/30=4/15
xhours times 4/15=1
multiply both sides by 15/4 to clear fraction
xhours =15/4
xhours=3 and 3/4
they take 3 and 3/4 hours aka 3 hours and 45 mins so
8:00+3:45=11:45
they finish at 11:45 AM
Answer:
9%
Step-by-step :
9.18 divided by 102 which is the total for everything he bought is .09 which is 9%