<span><span>∑<span>i=2</span><span>i=10</span></span>(4+2n)=</span><span>
You can do it by hand, w/o much work .
plug in n=2 into (4+2n)
then plug in n=3 into (4+2n)
then plug in n=4 into (4+2n)
etc until you get to n=10. Add them all up.
</span><span>add 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24
</span><span>144 jumps!</span>
<span>The best idea to solve this question is to convert all in same unit i.e. grams.
1 Gg = 10^9 g
100 g = 10^2 g
50 cg = 50*10^-2 g = 0.5 g
1 kg = 1000 g
1 cg = 0.01 g
1 dg = 0.1 g
50 mn ng = 50 * 10^6 * 10^-9 gram = 5* 10 ^-2 g = 0.5g
So, the correct order is 1 Gg > 1 kg > 100 g > 50 cg = 50 mn ng > 1 dg > 1 cg</span>
I believe it is basically saying what's a simpler way to write this equation
in this case, we could end up with..
$55.20 because you take 1049 and divide it by 20 then move the decimal and add 5.25 %
Answer: $53
Step-by-step explanation:
Given: Earning of Arthur in three weeks = $136
Let x be the money he earn in one more week.
If he needs at least $189 to buy the new coat that he wants for school.
Then it gives the inequality 
Subtract 136 from both sides of the inequality, we get

Hence, Arthur must earn $ 53 in the next week.