Answer: C≈628.32
Step-by-step explanation: This is due to the fact that the formula to find the circumference would be C=2πr which in this case the raduis would be 100 because if u divide the diameter by 2 u get 100. Now the formula is 2*3.14*100
Answer:
Step-by-step explanation:
1. 3x - 7 = 5 - x
4x = 12
x = 3
2. 6x + 4 = 2
6x = -2
x = -1/3
Answer:
Salma, joe, and alan sent 14, 69, and 23 text messages respectively
Step-by-step explanation:
Given that Salma, joe, and alan sent a total of 106 text messages during the weekend, it means that
s + j + a = 106 where s, j, and a are the number of messages sent by Salma, joe, and alan respectively
Given salma sent 9 fewer messages than alan
s = a - 9
Joe sent 3 times as many messages as alan
j = 3a
hence
a - 9 + 3a + a = 106
5a - 9 = 106
5a = 106 + 9
5a = 115
Divide both sides by 5
a = 115/5
= 23
s = 23 - 9
= 14
j = 3* 23
= 69
Answer:
Mean, m = 72
Step-by-step explanation:
It is given that, Carl earned grades of 62, 78, 59, and 89 on four math tests.
It is required to find the mean of his grades.
Mean of a data is given by :
Sum of observations is 62 + 78 + 59 + 89 = 288
Total no of observations are 4
So, mean of his grades is :
So, the mean of his grades is 72.
Answer:
Step-by-step explanation:
