To figure out the percentage you got correct, we need to set up fractional proportions.
We already have one fraction, 14/20.
Since we are looking for a percentage, we need to have a maximum total percentage that represents the total score.
100% is the maximum percentage for any total.
So we have our fractional proportions set;
14/20 : x/100
To solve for this, we need to cross multiply the numerator (top number) of one fraction by the denominator (bottom number) of the other fraction.
Let's try this!
14 • 100 = 1400
20 • x = 20x
Now that we have our products, set them as an equation.
20x = 1400.
To solve for x, we need to divide both sides by 20.
20x / 20 = x
1400 / 20 = 70.
You are left with:
x = 70.
Your answer is:
If you get 14/20 on a test, you would get 70% of the questions correct.
I hope this helps!
The amount that was invested 17 years ago is $2064.25.
The interest earned is $7935.75.
<h3>What is the amount invested 17 years ago?</h3>
The formula that would used to determine the amount that was invested 17 years ago is:
P = FV / (1 + r)^nm
Where:
- FV = Future value = 10,000
- P = Present value
- R = interest rate = 9.5 / 2 = 4.75%
- m = number of compounding = 2
- N = number of years = 17
10,000 / (1.0475)^(17 x 2) = $2064.25
Interest earned = 10,000 - 2064.25 = $7935.75
To learn more about future value, please check: brainly.com/question/18760477
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Answer:
y=9/4x-20
Step-by-step explanation:
Do the parallel line equation
7=9/4(12)+b
Solve for b
7=9×12÷4+b
7=27+b
subtract 27 to both sides
-20=b
Parallel lines have the same slope
y=9/4x-20
Answer:
The equation is in standard form. You will have to convert it to slope intercept form, which is -0.125x + 3.75 = y
Step-by-step explanation:
s = x and a = y, therefore 0.5x + 4y = 15
0.5x + 4y = 15
0.5x + 4y = 15 first subtract 0.5x
4y = -0.5x + 15 then divide all by 4
y = -0.125x + 3.75 slope intercept form
