Help!!!! I have worked on this for hours.
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Simple interest calculates interest on initial amount only. The investment by Hannah was : Option A: $4800
<h3>How to calculate simple interest amount if rate of interest is R% annually?</h3>Suppose that the initial amount of investment is P
And the rate of simple interest is R% annually,
And the time of investment is T years.
Then, the amount of simple interest is calculated as:
For the given case, let the initial investment Hannah made was of $P
Then, the time of investment is T = 8 years, R% = 4%, and given that Hannah earned interest I = $1536
Putting values in the above formula, we get;
Thus,
The investment by Hannah was : Option A: $4800
Learn more about simple interest here:
Answer:
a). 1, 3, 5, 7, 9, 11
b). 4, 6, 8, 10, 12, 14
c). 28, 30, 32, 34, 36, 38
Step-by-step explanation:
<u>Solution for question (a):</u>
<u />
The first difference of a sequence is the arithmetic sequence;
2, 4, 6, 8, 10
As clearly shown, the common difference (d) is 2.
This sequence, above, is an arithmetic sequence.
If the first term of an arithmetic sequence (AP) is 1, then the first six terms would be:
1, 3, 5, 7, 9, 11
<u>Solution for question (b):</u>
<u />
If the sum of the first two terms of an AP is ten,
Lets say the first term is x and the second term is x + 2 then;
x + (x + 2) = 10
2x = 10 - 2
x = 4
So the first term is 4 and the six terms of the AP are:
4, 6, 8, 10, 12, 14
<u>Solution for question (c):</u>
<u />
If the fifth term of an AP is 36 then,
To find the nth term in an AP we use the formula;
(where
is the nth term,
is the first term and
is the common difference).
36 = a + (5 - 1)2
36 = a + 8
a = 36 - 8 = 28
So the first term is 28 and the first terms are;
28, 30, 32, 34, 36, 38