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Romashka [77]
3 years ago
14

If i get 14/20 on a test what percent would that be? 30 POINTS!!!!! 5 STARS AND A THANKS TOO

Mathematics
2 answers:
IgorC [24]3 years ago
8 0
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!
Elena L [17]3 years ago
5 0
The percentage would be 70%
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3 years ago
How do you find the solution of this proportion?<br> 4/9 = m2-1/54 <br> m2 is m to the power of 2
elena-14-01-66 [18.8K]

Answer:

±5sqrt(6)/6 = m

Step-by-step explanation:

4/9 = m^2-1/54

Add 1/54 to both sides

4/9+ 1/54 = m^2-1/54 +1/54

4/9+ 1/54 = m^2

Get a common denominator of 54

4/9 *6/6 + 1/54 = m^2

24/54 + 1/54 = m^2

25/54 = m^2

Take the square root of each side

±sqrt(25/54) = sqrt(m^2)

±sqrt(25/54) = m

±sqrt(25)/sqrt(54) = m

±sqrt(25)/sqrt(9)sqrt(6) = m

±5/3sqrt(6) = m

±5/3sqrt(6) *sqrt(6)/sqrt(6) = m

±5sqrt(6)/3*6 = m

±5sqrt(6)/6 = m

8 0
3 years ago
Evaluate the expression when x=5 and y=41.<br> 25/x
stira [4]

Answer:

41+(25/5)=41+5=46

Step-by-step explanation:

I hope it helps!

6 0
3 years ago
Read 2 more answers
What is 1 6/12 plus 2 1/12 plus 1 9/12
Naddik [55]

The answer is 5 9/12.

6 0
3 years ago
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According to the rational root theorem, which of the following are possible roots of the polynomial function below?
Volgvan

Answer:

B, C, D, F

Step-by-step explanation:

The constant term is 10. It has divisors 1, 2, 5, 10.

The highest-degree term is 4x³. Its coefficient has divisors 1, 2, 4.

The rational root theorem tells you the possible rational roots will be one of the divisors of the constant term divided by one of the divisors of the the coefficient of the highest-degree term. (The roots may be positive or negative.)

Hence, possible rational roots include ...

... ±1/4, ±1/2, ±1, ±5/4, ±2, ±5/2, ±5, ±10

These show on your answer list as ...

  • B. 5
  • C. -1/2
  • D. 5/4
  • F. -2
6 0
4 years ago
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