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1 answer:
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Given:
Principal = $3000
Rate of interest = 4.7% = 0.047 compounded quarterly.
Time = 12 yeas
To find:
The value of John’s investment after 12 years.
Solution:
The formula for amount is
where, P is principal, r is rate of interest, n is number of times interest compounded in an year, t is number of years.
Substitute P=3000, r=0.047, n=4 and t=12 in the above formula.
Therefore, the required equation is .
We can further solve this.
Therefore, the value of John’s investment after 12 years is $5255.76.
Answer:
The top of the ladder is 6.3 feet high from the ground.
Step-by-step explanation:
The given question can be expressed by the three sides of a right angled triangle. Let the height of the top of the ladder from the ground be represented by h.
Thus, applying the Pythagoras theorem to determine h, we have;
=
+
=
+
121 = + 81
= 121 - 81
= 40
h =
= 6.325
h = 6.325 feet
The top of the ladder is 6.3 feet high from the ground.