Answer:
-15625
Step-by-step explanation:
Hope this helps!
Answer:
V = 288.5 
Step-by-step explanation:
To find the volume of a cone, use this equation:
r = radius
h = height
We aren't given the height of the cone, just the length of the side. To find the height use the Pythagorean Theorem:
The value of 12.1 yds is the hypotenuse and the radius is the value of one of the legs. So, set it up like this:
Now, solve:
Distribute the square
Subtract 25 from 146.41
a = 11.01862
So, the height is equal to 11.01862 yds.
Now, we can plug everything into the volume equation:
Simplify (use calculator):
V = 288.5
So, the volume of the cone is equal to 288.5
Carly-18 rolls of wrapping paper
If it’s twice as many rolls as Jasmine carried, then divide 18 rolls by 2 and you’ll get 9 rolls.
Answer:
24. 40 minutes approximately
25. 8 days
Step-by-step explanation:
24. 40 minutes
Anna: 1 hour
Peter: 3 hours
Maria: 6 hours
A way to solve this kind of question is to think about how much they can perform given the same amount of time.
Anna: 1 hour x 6: 6 hours (In 6 hours Anna can clean 6 houses)
Peter: 3 hours x 2 6 hours (In 6 hours Peter can clean 2 houses)
Maria: 6 hours x 1: 6 hours (In 6 hours Peter can clean 1 house)
Working together they can clean the house 9 times faster.
It is 0.66 hours, or approximately 40 minutes
25. 8 days
It climbs 3 feet up but then it falls 2 feet down while sleeping during
the night. So the snail actually climbs 1 foot every day. It happens in the first 7 days. On the 8th day it goes out before sleep.
This can be solved by creating a system of equations.
x + y = 254
12.5x + 10y = 2745
We can then use substitution to solve the system.
x = 254 - y
12.5(254-y) + 10y = 2745
3175 - 12.5y + 10y = 2745
-2.5y = -430
y = 172
Finally, we can use that answer to solve for x.
x + 172 = 254
x = 82
So, there were 82 of the lower box tickets sold and 172 of the upper box tickets sold.
