Answer:
r = 7
Step-by-step explanation:
60 = -24 + 12r
<u>+24 +24</u>
84 = 12r
84 ÷ 12 = r
7 = r
Check:
60 = -24 + 12r
-24 + 12(7)
-24 + 84 = 60
The radius is <span>5.497211734394065
</span>
Answer:
The function will be exist if and only if :
Answer:
-10 and -2
Step-by-step explanation:
ONLY IF ITS two number that mutiply to equal 20 and their sum is -12
Answer:
8 Hours
Step-by-step explanation:
Given: 3/4 part of race completed in 6 hours.
Formula for finding speed is,
Speed=
Now, lets find out the speed at which of the race completed.
Speed=
∴ Speed was to complete of the race.
Lets find out the remaining part of race:
=
∴ part of the race is yet to be completed.
Now, time taken to finish part of race at the same speed of .
Formula for finding time is,
Time=
Time ()= = 2
∴ Time taken to finish remaining part of race is 2
Now, to find out total time taken to finish entire race is:
Total time=
Total time =
∴ Total time taken to finish entire race is 8