Answer:
About 28.27.
Step-by-step explanation:
To figure out the area of the base, you just use the formula to find the area of a circle. Which is;
A = r^2 * pi
(r stands for radius)
Answer:
k = 4
Step-by-step explanation:
-9 +8k = 7+4k
Subtract 4k from each side
-9 + 4k = 7
Add 9 to each side
4k = 16
Divide by 4
k = 4
Plug in the value you got for k:
-9 + 8(4) ? 7 + 4(4)
-9 + 32 ? 7 + 16
23 ? 23
23 = 23
The answer would be:
8 × 4 = 32
32 ÷ 4 = 8
All of the telephones * all of the telephones minus one (because one is in use)
85 * 84 = 7140 connections
Answer:
There are 60 marbles in the bag
Step-by-step explanation:
The total number of marbles times the probability of red marbles = number of red marbles
total * 7/10 = 42
Multiply each side by 10/7
total * 7/10 * 10/7 = 42*10/7
total
60
There are 60 marbles in the bag
