How many degrees does the secondhand of a clock turn in 15 seconds

90 degrees

Step-by-step explanation:

by observing a  clock face, we can see that when the second hand goes one complete round (i.e in 1 minute = 60s) it would have turned 360 degrees.

we also notice that in 15 seconds, the pointer would have turned 1/4 of the clock face (e.g from 12 to 3)

hence the angle it turns in 15 sec

= 1/4 of the clock face

= 1/4 of 360 degrees

= 360/4

= 90 degrees

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation: