Identify the variation as direct, inverse, joint or combined. If the area of a rectangle stays constant, what is the relationshi
2 answers:
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a. The interest earned will be $36.
b. The account balance will be $336.
Step-by-step Explanation:
Step 1:
The initial amount put into the account was $300.
This account has an interest rate of 4% every year. So we must calculate how much 4% of $300 is.
4% of $300 =
Step 2:
So for every year, the interest of $12 is added into the account. To calculate total interest we multiply this interest amount and the number of years.
So after 3 years
So account balance after 3 years .
So the interest earned is $36 and the account balance is $336 after three years.
Answer:
7 feet and 24 feet
Step-by-step explanation:
In the right triangle, the hypotenuse is 25 feet long. The area of this triangle is 84 square feet.
Let x feet and y feet be the lengths of triangle's legs.
By the Pythagorean theorem,
The area of the right triangle is half the product of its legs, thus
Solve the system of two equations:
From the second equation:
Substitute it into the first equation:
The length of the leg cannot be negative, so