Answer:
50 seconds
Step-by-step explanation:
divided 150 by 3
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<span>By the time firework a has been launched, firework b has already been launched for 0.25 seconds, so if we treat the two as equations, then
a = 220 (t)
b =</span> 220 (t) + 220 (.25)
<span>And we want to know when these two equal eachother, as that's they will both detonate.
220t = 200 t + 200 (.25)
20t = 50
t = 2.5</span>
The answer could be something of the sort like 2/24, because 1/12 can't be simplified, you would just keep multiplying both numbers until you get another fraction equal to 1/12
Answer:
$12,500
Step-by-step explanation:
Using the compound interest formula Accrued Amount = P (1 + r)^n
where Accrued amount = $18000
P = principal; we need to generate it
r = 20% = 0.2
n = 2
Therefore
P = Accrued amount/ (1 + r)^n
= 18000/(1+0.2)^2
= 18000/1.44
= 12,500
hence $12,500 needs to be invested
If you have some scratch paper handy, you can divide the track into 2 semi circles, and one rectangle. Multiply the length (100) by two since a rectangle has 2 lengths (one on top, one on bottom). However, do not add the widths to the final perimeter because it is not part of the track. Now to find the semicircles (the two curves on each end). The circumference of a circle is 2
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