So the students are on 5:6 ratio from volleyball to football, and we know there are 220 students in total.
<span><span>∑<span>i=2</span><span>i=10</span></span>(4+2n)=</span><span>
You can do it by hand, w/o much work .
plug in n=2 into (4+2n)
then plug in n=3 into (4+2n)
then plug in n=4 into (4+2n)
etc until you get to n=10. Add them all up.
</span><span>add 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24
</span><span>144 jumps!</span>
Answer: t2 = 0.86 t1
0.286 seconds
Step-by-step explanation:
Given that the speed of the two skaters to be
S1 = 12 m/s
S2 = 14 m/s
Since it is a race, the distance covered will be the same. But of different time.
First Skater
Speed = distance/time
Let's assume that the distance covered when the second overtakes the first is d
12 = d/t1
d = 12t1
Since the time of both skaters are not given, let us assume that distance where the second skater overtakes the first is 4 metres. Therefore
t1 = 4/12 = 0.3333 second
Second skater
Speed = distance/ time
14 = 12t1/t2
t2 = 12t1/14
t2 = 0.86 t1
t2 = 0.86(0.333)
0.286 seconds
To figure out the percentage of a number, take the percentage and move the decimal to the left two times. So 315 would turn into 3.15.
Now multiply the new number to the other number.
3.15 * 26.2
The answer is 82.53.
Hope this helped!
