The answer for your question is 15/2 because it dosent add up to a proper fraction
4 unknowns needs 4 equations. I'll call the unknown numbers a,b,c,d in that order left to right.
4 + a = b
a + b = c
b + c = d
c + d = 67
let's use substitution to get rid to combine equations and get rid of variables.
If a + b = c then a = c - b
4 + (c - b) = b
4 + c = 2b
If b + c = d then b = d - c
4 + c = 2(d - c)
4 + c = 2d - 2c
4 + 3c = 2d
then we have c + d = 67 so c = 67 - d
4 + 3(67 - d) = 2d
4 + 201 - 3d = 2d
205 = 5d
d = 41
Should be easy now, subtract backwards.
67 - 41 = 26
41 - 26 = 15
26 - 15 = 11
15 - 11 = 4
4, 11, 15, 26, 41, 67
<span><span /><span><span>1st 3
<span> 0.80 </span>
<span> 2.40 </span>
</span>
<span>
<span>
2nd 2.40 </span>
<span> 0.80 </span>
<span> 1.92 </span>
</span>
<span>
<span>
3rd 1.92 </span>
<span> 0.80 </span>
<span> 1.54 </span>
</span>
<span>
<span>
4th 1.54 </span>
<span> 0.80 </span>
<span> 1.23 </span>
</span>
<span>
<span>
5th 1.23 </span>
<span> 0.80 </span>
<span> 0.98 </span>
</span>
<span>
<span>
6th 0.98 </span>
<span> 0.80 </span>
<span> 0.79 </span>
</span>
<span>
<span>
7th 0.79 </span>
<span> 0.80 </span>
<span> 0.63 </span>
</span>
<span>
<span>
8th 0.63 </span>
<span> 0.80 </span>
<span> 0.50 </span>
</span>
<span>
<span>
9th 0.50 </span>
<span> 0.80 </span>
<span> 0.40 </span>
</span>
<span>
<span>
10th 0.40 </span>
<span> 0.80 </span>
<span> 0.32
total: 13.39
13.39 rounded to 13.40 is the sum of the length of string after 10 throws.
Based on the table: I generated the formula:
f(x) = 3 </span></span></span></span>×<span><span><span><span> 0.80</span></span></span></span>ˣ
where the exponent x represents the number of throws.
18 feet and 1 once because there is a 8 inch difference between the boys height and his shadows height so it would be the same difference for the telephone pole making it 18 feet and 1 inch. :)
Answer:
-1,-3,-9,-27,-81,-243...
Step-by-step explanation:
