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
Aneli [31]
3 years ago
10

Emily earned a grade of 80% on a math test that had 20 problems. How many problems on this test did she answer correctly? If Joh

n got 7 problems incorrect on the same test, what was his grade?
Mathematics
2 answers:
Oxana [17]3 years ago
7 0
Someone getting all 20 problems correct would earn a grade of 100%.  Thus, each correct question counts 5%.

If Emily earned 80%, then the number of problems she got correct was (80% / 100%).

Simplify this result.  It represents the fraction of 20 questions that Emily got correct.  Multiply your result by 20 to find the actual number of questions that E. got correct.
galben [10]3 years ago
4 0
0.8*20 = 16 problems answered correctly
If John got 7 problems wrong, then he got 14 problems right.
14/20 = 0.7
Now, convert 0.7 into a percentage.
You might be interested in
4/5,9/10,17/20 least to greatest
Lana71 [14]

Answer: 4/5 17/20 9/10

Step-by-step explanation:

Find a common denominator

4/5-16/20

17/20-17/20

9/10-18/20

6 0
3 years ago
Read 2 more answers
Can anyone help? i suck at math lol
aleksley [76]

Answer:16384

Step-by-step explanation:

4*4*4*4+4*4*4

6 0
3 years ago
Which phrase correctly represents the algebraic expression for 22-n?
Harrizon [31]

Answer:

D

Step-by-step explanation:

3 0
3 years ago
What length will Zaragoza need
Dafna11 [192]

Answer:

A. 58 ft

The drawings will help

3 0
3 years ago
Can someone please help me?
Sever21 [200]

Answer:

B.

Step-by-step explanation:

The problem is saying 2/5 squared by -2 times -3 multiplied by itself 4 times.

2/5 multiplied by itself -2 times looks like this: -2/5 times -2/5.

-3 multiplied by itself 4 times looks like this: -3 times -3 times -3 times -3.

Put the two together and it looks like B.

4 0
3 years ago
Other questions:
  • When evaluating data on a scatter plot what can be used to make predictions about the future?
    9·1 answer
  • 13. A contractor buys 8.2 square feet of sheet metal.
    7·1 answer
  • A 9kg bag of mangoes for $12 is
    8·1 answer
  • At the candy store there are 1400 gumdrops and 3150 chocolate bars, for a total of 4550 candies all together. What is the ratio
    15·1 answer
  • Find the difference of the two functions
    10·2 answers
  • - 5༩ +9 = 24<br> what is the answer? show your work.
    8·1 answer
  • Sarah is a server who makes $5 per hour working 35 hours a week. She made $250 in tips.
    7·1 answer
  • Joanna is selling tickets for the school play $he ha$ already $old $35
    15·1 answer
  • The functions f(x) and g(x) are shown below:
    12·1 answer
  • An architect is designing new housing structures for the primate section at the zoo. Her plan is shown below. Which animals will
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!