Answer: 0.4%
40%
37.5%
Step-by-step explanation:
It's pretty clear what the pattern is - 2^(k-1) * (-1)^(k-1) would work backwards, but we have to work forwards to get lower in this case, so we could start at -3 (as long as we put the k-1 in absolute value to make sure it's not 1/8), so we could write it as ∑ (k=1, goes to 4) 2^(|k-4|)*(-1)^(k-4)
It doesn't matter for k-4 because 1/-1 and 1/1 are the same thing as -1 and 1 respectively
Answer:
Step-by-step explanation:
Given
Quin made three and four seventh jugs of sweet tea i.e.
She sold two and one-third jugs i.e.
Remaining tea=
The pie it’s self is 6.75, the ice cream is 1.25 and that makes 8 dollars per person which totals up to 32
Since D is the midpoint of CE, knowing that CD = 3x implies that DE = 3x as well.
So far, we know that:
Now, since AE and BD are parallel, the two triangles ACE and BCD are similar, which means that their corresponding sides are in the same proportion.
For this reason, we can write the following proportion:
and plug the values we wrote above:
Since the two factors in the right hand side are the same, the two factors on the left hand side must be equal as well, so we deduce which solves to .
Knowing that and that , we can easily conclude that .