Answer:
641 times
Step-by-step explanation:
Rate of transfer in 1989
2.4 kilobytes per second
Rate of transfer in a typical modem
1000 kilobyte per 0.65 seconds
Transfer per second for typical modem
1000/0.65=1538.461538 kilobyte per second
Comparing typical modem to 1989
=641.025641 times faster
Rounding off, this is 641 times faster
Therefore, ans=641 times
AVERAGE between 90 and 100%
means not including 90 and 100% but not including 90 or 100%
average=(sum of values in set)/(how many values in the set)
so
4 exams, so there are 4 values
average=(sum)/4
the sum is the known+unknwon
sum=76+99+86+x
so
90<span><</span>average and average <span><</span>100
or
90<span><</span>average<span><</span>100
lets say average=a
a=sum/number
a=(76+99+86+x)/4
90<(76+99+86+x)/4<100
90<(76+99+86+x)/4 and (76+99+86+x)/4<100
solve each for x and find intersection
90<span><</span>(76+99+86+x)/4
times 4 both sides
360<span><</span>261+x
minus 261 both sides
99<span><</span>x
(76+99+86+x)/4<u><</u>100
times 4 both sides
261+x<u><</u>400
minus 261 both sides
x<u><</u>139
so
99<u><</u>x<u><</u>139
since max score is 100
99<u><</u>x<u><</u>100
interval notaion is
[99,100]
answer is 2nd one
2x-3x-6x+5x+5-2 is the answrr
Answer:
2/4 and 1/2
Step-by-step explanation:
I'm not sure if this is what you meant? i hope this helps anyway though!
