Answer:
Step-by-step explanation:
30 students volunteered to set up booths for the school fair. All of the students worked 2 hours after school on Thursday and on Friday. This means the total number of hour worked on Thursday is 30 × 2 = 60 hours and Friday is 30 × 2 = 60 hours
Twelve of them also worked 3 hours on Wednesday. It means that the total number of hour worked on Wednesday is
12 × 3 = 36 hours
If they did this for 2 weeks, it means that they worked for 2 Wednesdays, 2 Thursdays and 2 Fridays.
Total number of hours worked will be
2×60 + 2×60 + 2×36 = 120 + 120 + 72 = 312 hours
32 students...from my calculations.
I notice that The price is higher than the original price
And I wonder it is because of the tax?
The radius of the base is 10 cm.
Solution:
Height of a cone = 15 cm
Volume of the cone = 1570 cm³
To find the radius of the base of the cone:
Volume of the cone = 
Divide by 15.7 on both side of the equation, we get
Taking square root on both sides of the equation, we get
⇒ r = 10
Hence the radius of the base is 10 cm.
Answer:
<h3> YES</h3>
Step-by-step explanation:
relation is a function if we have y for every x from domain and for one x we have one and only one y
x = 1 --> y = 2
x = 2 --> y = 2
x = -2 --> y = 2
no x-es without y-es
and no two the same x-es with one y
so this relation is a function
