Remark
There is a very quick way to do this. Scan the numbers. You want 75 to be the mean, so make it so. Then figure out how many up or down you go from 75. I'll make a list of the givens.
72 - 3 72 is three down from 75 so call it - 3
75 0 That is your desired average so it adds nothing to the score.
74 -1 It is one down from 75, so call it -1
76 +1 It is one up from 75
76 +1 it is one up from 75
75 adds 0.
-3 - 1 + 1 + 1 = - 2
That comes - 2/7 which means that you need a score just under 75. So 75 will give you the right average of 75
Answer B <<<<<
In this problem it
states that one tenth or only 10% is Canada’s population to the United States.
Hence with the steps we
can identify the population of the United States.
<span><span>1.
</span>10 %
= 32 million or 0.1 = 32 million</span>
<span><span>2.
</span>Then 32
million / 0.1 = 320, 000, 000 million</span>
Therefore there are 320,
000, 000 million living in the United States
Adding one zero. Why the zeroes? It is
the result because of the power of 10 in a hundred percent population coming
from the Canada’s population. Take note that 100% = 320, 000, 000 million of
the USA while 10% of it is Canada so we divide it by 0.1 which is 32, 000, 000
(the power of ten)
The common difference, d, can be determined by subtracting the two consecutive values:
1 - 5 = -4
-3 - 1 = -4
-7 - -3 = -4
Then, using the equation:
an = a1+ d(n-1)
a_21 = 5 + (-4)(21 - 1)
a_21 = -75
The answer is letter D. I hope I was able to help you. Have a good day!
25 = hypothenuse
14 = opposite
Use SOHCAHTOA
Give O and H, you can use sin
Sin^-1 = 14/25 = 34.0557
Round to hundreds
Solution: 34.06
