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
solniwko [45]
3 years ago
6

Mark had 14 problems wrong on his test. his score was 72% correct. how many problems were on the test?

Mathematics
1 answer:
ella [17]3 years ago
4 0
Let x = number of problems on test
If he got 14 wrong, then x - 14 is the number correct.
\frac{x-14}{x} = .72

x - 14 = .72x
.28x - 14 = 0
.28x = 14
x = 50

The test consisted of 50 problems.
You might be interested in
Help quick please<br><br><br><br><br> ________
Kruka [31]
Hey

Area of first rectangle = 18 x 21 = 378 in^2

Area of second rectangle = 17 x 9 = 153 in^2

Total area = 378+153 = 531 in^2

Option 1


Hope this helps :)
5 0
2 years ago
Read 2 more answers
Help with the following photo
lakkis [162]

Step-by-step explanation:

The solution is in the attached file

8 0
3 years ago
3(x-5) = 30<br> Solve for x. Only type in the number value for x for your answer
Feliz [49]

Answer:

x=15

Step-by-step explanation:

Divide both sides by the numeric factor on the left side, then solve.

4 0
3 years ago
Help plzzz, you could just tell me to go left or right
Lerok [7]

I ussually think of them as arrows telling me where to go.

if it is >   you go ----->

if it is < you go <------

6 0
3 years ago
Prove that (2n+1)^2 - (2n+1)^2 is a multiple of 8 for all positive integer values of n
kogti [31]

Answer:

(2n + 1)[(2n + 1) � 1]

(2n + 1)(2n + 1 � 1)

(2n + 1)(2n), or 2n(2n + 1)

2n is an EVEN NUMBER, and adding 1 to an even number creates an ODD number

Therefore, 2n(2n+1)=EVEN NUMBER ODD NUMBER=EVEN NUMBER

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Dominic Has 5,000 Robux On ROBLOX. he does two things divided it and multiply it. How Much ROBUX Does Dominic Have?
    15·2 answers
  • How do you simplify quadratic equations?
    10·1 answer
  • Beth plays a video game in which she starts with 0 points. In round 1, she loses 3 points;
    14·1 answer
  • What are the answer to these questions?
    12·1 answer
  • Billy Bob made 16 quarts of lemon juice. How many liters of lemon juice did Billy Bob make?
    10·2 answers
  • 1 Marlena has a bag of coins. The bag
    15·1 answer
  • The overnight temperature in Tampa never
    12·1 answer
  • write the number 100 as a product of it's prime factor in the same way write the factors in order from smallest to largest
    11·2 answers
  • Y&lt; 3x + 6<br> Determine if (2,4) is a solution
    13·2 answers
  • Which of the following are properties of parallelograms?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!