Answer:
12/25 of the class are boys.
Step-by-step explanation:
12+13=25
12/25
So, basically what they are asking for is the circumference (which is like the perimeter) of the inner and outer circles.
Circumference is: C = 2<span>πr
The radius of the two circles are given so all you need to do is plug it in.
Circumference of the bigger circle (outer tire) is 157ft. Circumference of the smaller circle (inner tire) is 132ft.
The exact answer is 157.07-131.88 = 25.19ft </span>≈ 25ft<span>
</span>
Answer:
169 seconds
3rd lap
0.923 minutes
Step-by-step explanation:
To solve this question, we would use formula for arithmetic progression in solving it.
S(n) = a + (n - 1)d
If a = 25 s
n = 10
d = 16
S(n) = 25 + (10 - 1)16
S(n) = 25 + 9 * 16
S(n) = 25 + 144
S(n) = 169
It takes him 169 seconds to cycle his tenth lap
b
If S(n) = 55.4, what is n
55.4 = 25 + (n - 1)16
55.4 - 25 = (n - 1)16
30.4 = (n - 1)16
n - 1 = 30.4/16
n - 1 = 1.9
n = 1.9 + 1
n = 2.9 approximately 3
Therefore, he's on his 3rd lap
c
Total time cycled is dependent on the total cycles he made, and going to question 2, we were told he made 55.4 seconds of cycle
55.4/60 = 0.923 minutes
Answer:
c is the correct answer. i have given solution in your previous question. ihope it helps
The product of one term of a multiplicand and one term of its multiplier