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barxatty [35]
2 years ago
6

Raylan opened a savings account with $100. After 5 years there is $122. 50 in the account. What is his simple interest rate?

Mathematics
1 answer:
serious [3.7K]2 years ago
5 0
<h3>Answer:</h3>

4.5% annually

<h3>Step-by-step explanation:</h3>

Simple interest is the amount of interest added to a singular sum of money at a fixed rate.

Formula

The formula for simple interest is A = P(1+rt). In this formula, A is the total amount of money in the account, P is the original amount deposited, r is the rate of interest as a decimal, and t is the time in years.

Calculations

To find the rate, plug the information we know into the formula above

  • 122.50 = 100(1+r*5)

Divide both sides by 100

  • 1.225 = 1 + r*5

Subtract 1 from both sides

  • 0.225 = r*5

Divide both sides by 5

  • 0.045 = r

This gives us the rate as a decimal. So, to find the rate as a percent. Do this by moving the decimal 2 places to the right (or just multiply by 100, they do the same thing). This means that the rate of simple interest is 4.5%.

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What is the meaning of cubed (enter the number only)
Mariulka [41]

Answer: 3

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please graph! 90 points! And BRAINLIEST
daser333 [38]

The points on the graph are:

  • Midline point = (0,-5)
  • Maximum point = (0.65,-2)

<h3>(a) The graph of the function</h3>

The equation of the function is given as:

f(x) = 3\sin(12x) - 5

See attachment for the graph of the function f(x)

<h3>(b) The midline point</h3>

This is the point that is on the line that passes through the midsegment of the function.

From the graph, a point on the midline is (0,-5)

<h3>(c) The maximum point</h3>

This is the point that is on the vertex of the function.

From the graph, a point on the midline is (5pi/24,-2)

This can be rewritten as: (0.65,-2)

Read more about trigonometry graphs at:

brainly.com/question/8120556

4 0
2 years ago
Read 2 more answers
What constant do you need to add to each quadratic to complete the square? 1. x2 - 4x = 0 4 2. x2 - 8x = 6 9 3. 3x2 + 18x = 24 1
Radda [10]
1) You must add 4 to each side to complete the square.
2) You must add 16 to each side to complete the square.
3) You must add 27 to each side to complete the square.

Explanation:
1) x²-4x=0
To find the number that we add to both sides, we look at b, the cofficient of x.  It is -4. We divide it by 2 and square it; -4/2 = -2; (-2)² = 4.  This is the value that we add to both sides.

2) x²-8x=6
-8/2 = -4; (-4)²=16
We add 16 to each side to complete the square.

3) 3x²+18x=24
First we can factor a 3 out of the left side:
3(x²+6x) = 24
Our b value is now 6.  6/2 = 3; 3²=9.  The 9 would, however, go in the parentheses, so it would be multiplied by 3, which makes 27; this means we would add 27 to both sides.
6 0
3 years ago
How much would it be worth in 5, 10, 20 years
pochemuha

Answer:

$675

$850

$1200

Step-by-step explanation:

Use formula for simple interest:

A = P (1+rt)

where

A = accrued amount (principal + interest) = what we want to find

P = Principal (initial) amount = Given as $500

r = rate of interest = Given as 7% = 0.07

t = time

For 5 years, t = 5

A = 500 [ 1 + 0.07(5) ] = $675

For 10 years, t = 10

A = 500 [ 1 + 0.07(10) ] = $850

For 20 years, t = 20

A = 500 [ 1 + 0.07(20) ] = $1200

8 0
3 years ago
23rd term: -4,-7,-10,-13
Mashutka [201]
5 : -16
6 : -19
7 : -22
8 : -25
9 : -28
10: -31
11 : -34
12: -37
13: -40
14 : -43
15 : -46
16 : - 49
17 : - 52
18 : - 55
19 : - 58
20: - 61
21 : - 64
22: -67
23: -70

23rd term : is -70
3 0
3 years ago
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