1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Verdich [7]
3 years ago
7

If mary deposited $950 in a savings account. It earned a total of $195 in simple interest over three years. What was the simple

interest rate on Mary's savings account?
Mathematics
1 answer:
Sedaia [141]3 years ago
7 0

In order to find the simple interest rate we will follow the formula:

                                                I = Prt  or r = I/Pt

( the / represents division for this formula). You can use either formula to find the answer. I'll do both for you to see and determine for the future which is most easy for you.

Let's define what the letters of the formula mean (both formulas have the same meaning for the letters).--in parenthesis I will put the numbers that we'll use for each letter, also.

r = the interest rate that we need to find (this is what we will solve for)

I = how much interest that was made through the time frame. ($195)

P = the Principal amount. ($500)

t = the amount of time of accruement. (3)

Let's begin plugging in our numbers into the first formula I = Prt.

195 = (500) (r) (3)

Multiply your numbers behind the equal sign.

500 x 3 = 1500

We're left with

195 = 1500r

Now we'll divide:

195 ÷ 1500= 0.13

This will be our interest but we have to turn it into a percentage. To turn the decimal into a percentage we'll move our decimal two places to the right. That leaves us with 13.0

Therefore, the simple interest is 13%.

====================================================

The second formula solving: r = I/Pt

Plug your numbers into your formula just like before.

r = 195 / 500(3)

Multiply 500 x 3 = 1500

195/1500 = .013

We'll turn it into a percentage which again, will give us 13% simple interest.



You might be interested in
34 123 006 expanded form
ololo11 [35]
Thirty four million one hundred twenty three thousand six
3 0
3 years ago
Factor 2a2b3 - 14ab + 16a
zhuklara [117]

Answer:

2a(b^3 - 7b + 8)

Step-by-step explanation:

I'm assuming that 2a2b3 is 2a2b^2. If not, this answer isn't correct.

Look at the whole numbers. Is there a number that divides into them evenly? Yes, 2, so you pull 2 from the problem and divide each number by 2. Do the same for each variable.

2a2b3 - 14ab + 16a

2(ab^3 - 7ab +8a)

2a(b^3 - 7b + 8)

6 0
3 years ago
Find the surface area of the attached figure
erastova [34]

Answer:

1477.033\\

Step-by-step explanation:

4 0
3 years ago
Different groups of 50 graduates of engineering
ANEK [815]

Answer: Im sorry, can you finish your sentence for me? maybe its a glitch you can send me a message if you want me to help you?! (:

Step-by-step explanation:

7 0
3 years ago
the length of one of the diagonals of a quadrilateral is 10 cm and the particular drawn from the opposite vertices to this diago
loris [4]

Answer:

Therefore the area of the quadrilateral =35 cm²

Step-by-step explanation:

Given, the length of one of diagonal of quadrilateral is 10 cm and perpendicular drawn from the opposite vertices to this diagonal are the length of 2.8 cm and 4.2 cm.

A diagonal divided a quadrilateral into two triangle.

Therefore the area of the quadrilateral

= sum of the area of the triangles

=(\frac{1}{2}\times 10\times 2.8+ \frac{1}{2}\times 10\times 4.2)cm²      [ area of a triangle= \frac{1}{2}\times base\times height]

=35 cm²

3 0
3 years ago
Other questions:
  • If tim was 5 in 1990 and its 2020 how old is tim
    5·2 answers
  • Use the quadratic formula to solve x2 + 8x + 9 = 0. Estimate irrational solutions to the nearest tenth.
    7·2 answers
  • Find the area of the shape.
    14·1 answer
  • Is this all correct? first one to answer is brainliest
    9·1 answer
  • Which value of x from the set {4, 5, 6, 7}, makes this equation true? 4(8 − x) = 8
    6·2 answers
  • Determine algebrically if f(x)=4x³-5x is odd or even function​
    9·1 answer
  • Mr. Allen needs to store his boat for winter. He needs to fill the gas tank and put fuel preserver in the tank. The fuel tank ho
    6·1 answer
  • Help if you’re good at math I’ll give brainliest
    8·2 answers
  • Function or not a function?
    5·2 answers
  • Scott has 18 3/4 gallons of gas in his tank. If he uses 3/50 gallons of gas per mile he drives how many miles can he drive befor
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!