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
Andrews [41]
3 years ago
6

On the first math test, Keiko answered 19 out of 25 questions correctly. On the

Mathematics
1 answer:
m_a_m_a [10]3 years ago
4 0

Answer:

Keiko got a better answer on the test on her second test, and you could compare these two ratios as they are written.

Step-by-step explanation:

First: Convert each of the scores into percentages:

How do you convert ratios to percentages? Well, first we have to convert the ratio to a decimal or a fraction. Let's convert it to a fraction. So, 19 out of 25 will become \frac{19}{25}, and 17 out of 20 will become \frac{17}{20}. To convert a fraction to a percentage:

  • Divide the numerator by the denominator:

19 ÷ 25 = 0.76                                        AND                                    17 ÷ 20 = 0.85

  • Multiply your quotient by 100

0.76 x 100 = 76                                      AND                                 0.85 x 100 = 85

  • Add the percent sign

76%                                                          AND                                                   85%

Now the two quantities are easier to compare. We can obviously see that 85% is bigger [and better] than 76%. So, the ratio that equals 85% - 17 out of 20 - is a better grade.

The second question was: Can you compare these two ratios as they are written? Explain why or why not.

Yes, you can compare these two ratios, just find the [positive] difference between the amount that she scored and the total number of scores that could be gained.

25 - 19 = 6

20 - 17 = 3

Since the equation with 20 and 17 in it has a smaller difference, it is most likely to have a greater value [because that means that Keiko got more right and less wrong, which means a greater mark which is also a greater quantity].

Thanks,

Topic: Quantity Relationships, Quantity Conversions

You might be interested in
Which is the decimal expansion of the following 1/5
amid [387]

Answer:

Decimal expansion of 1/5 = 0.2

7 0
3 years ago
What is the answer to A x + B y = C
frosja888 [35]

Answer:

means that ab=c

Step-by-step explanation:

4 0
3 years ago
A circle with area 100π has a sector with a central angle of 2/5π radians.
Snowcat [4.5K]

Answer:

  20π square units

Step-by-step explanation:

The sector area is found using the proportion ...

  sector area / circle area = sector angle / whole circle angle

Multiplying by "circle area", we get ...

  sector area = (circle area)( sector angle / whole circle angle)

  = (100π)(2/5π)/(2π)

  = (100π)(1/5)

  sector area = 20π

3 0
3 years ago
Someone please help im stuck
BARSIC [14]
The answer is b, -11.
plug in 3 as the input and solve.
4 0
3 years ago
The map at the right has an Euler Path in which you can pass through each doorway exactly once. Which 2 rooms must be a starting
bogdanovich [222]

Answer:I think the answer is d

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • What is the area of this parallelogram?
    6·2 answers
  • Find the sum 3a/bc + 2b/ac
    15·1 answer
  • Please help!!!<br><br> which ones apply, there may be more than one answer~
    15·1 answer
  • Is -2.7 an irrational number
    12·2 answers
  • Translate to an algebraic expression <br><br> 49 increased by d what translation is
    6·2 answers
  • What is the 2nd term of y+nw+5?
    9·2 answers
  • Jadon is making a trail mix of chocolate pecans and peanuts to sustain him and his teammates
    9·1 answer
  • Find the amount or annuity of 10,00 paid yearly for three years at 8% per anum
    14·1 answer
  • What is the third term of the sequence?<br> A<br> 25<br> B<br> 50<br> C. 35<br> D<br> 20
    10·1 answer
  • X-4[x-2(x+6)]=5x+3<br><img src="https://tex.z-dn.net/?f=x%20-%204%20%20%20%5B%20%20x%20-%202%28x%20%2B%206%29%5D%20%20%3D%205x%2
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!