Answer:
139. 2 is the mean and the median is 98.5
Step-by-step explanation:
median = 98.5
mean = 139.2
Let c represent the number of children Mama has. The number of notebooks she has is
.. 13c +8 = 15c
.. 8 = 2c
.. c = 8/2 = 4
Mama has 4 children and 60 notebooks.
We have to calculate a monthly annuity.
Total = Monthly Amount * [(1 + rate)^(n + 1) -1] / [rate] - Monthly Amount
where "n" is the number of compounding periods per year.
and n = 4.5*12 = 54
rate = rate/n = .055 / 12 =
<span>
<span>
<span>
0.0045833333
</span>
</span>
</span>
Total = 100 * [(1<span>.0045833333)^55 -1] / [</span><span><span><span>
<span>
0.0045833333
</span>
</span>] -100
</span>
</span>Total = 100 * <span><span><span>0.2859624157
/ </span>
</span>
</span>
[<span><span>
0.0045833333
</span>] -100
</span>Total = <span>28.59624157 / </span>[<span>
0.0045833333
] -100
</span>Total =
<span>
<span>
<span>
6,239.18 -100</span>
</span></span>Total =
6,139.18
Source:
http://1728.org/annuity3.htm formula
http://1728.org/annuitym.htm calculator
Answer:
x = 8
Step-by-step explanation:
-1/4 (2x + 8) = -6
Multiply both sides by -4.
2x + 8 = 24
Subtract 8 from both sides.
2x = 16
Divide both sides by 2.
x = 8
