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
elena-14-01-66 [18.8K]
3 years ago
9

John participated in a science contest. He received 3 points for each correct answer but lost 2 points for each incorrect answer

. After answering 50 questions, John's score was 95 points. How many questions did John answer incorrectly?
Mathematics
1 answer:
harkovskaia [24]3 years ago
8 0
(3*50)-95=55/2=27.5 questions are incorrect..
You might be interested in
Find the GCF of 48 and 42​
ivann1987 [24]

Answer:

The gcf of 42 and 48 can be obtained like this:

The factors of 42 are 42, 21, 14, 7, 6, 3, 2, 1.

The factors of 48 are 48, 24, 16, 12, 8, 6, 4, 3, 2, 1.

The common factors of 42 and 48 are 6, 3, 2, 1, intersecting the two sets above.

In the intersection factors of 42 ∩ factors of 48 the greatest element is 6.

Therefore, the greatest common factor of 42 and 48 is 6.

Taking the above into account you also know how to find all the common factors of 42 and 48, not just the greatest.

Hope I helped

3 0
3 years ago
Read 2 more answers
What is the IQR of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Marta_Voda [28]

Answer:

5.5

Step-by-step explanation:

Lower quartile: 2.75

Upper quartile: 8.25

6 0
3 years ago
Read 2 more answers
1+1=<br><br>please help me, this question is very difficult​
AURORKA [14]
I think it’s 47743774367
8 0
3 years ago
Read 2 more answers
At the football concessions stand, Tia sold 78 hamburgers and chicken tenders. If she
Murrr4er [49]

I am going to do this problem with more of an algebraic approach weather or not its the way your teacher wants you to do it like this.

The way to do things algebraically is to just set variables for what you want to find and set up equations to represent each sentence.

As seen there are hamburgers and chickens in this problem. So let's set the numbers of hamburgers to x, and the numbers of chickens to y.

Now write out each sentence using variables.

1.) Tia sold 78 hamburgers and chicken tenders.

x+y=78

2.) If she sold 24 more hamburgers than chicken tenders.

x=y+24

Now that we have the 2 equations, its time to solve.

Since we have x=y+24, we can replace the x in the first equation with the second equation

y+24+y=78

2y+24=78

Now we can subtract 24 from both sides.

2y=54

Simplify

y=27

Solve for x

x=27+24=51

Done!

6 0
2 years ago
Cierra has 3 more than one half as many purses as Aisha define the variable and write an expression to represent the number of p
77julia77 [94]
Cierra has 9 purses..
4 0
3 years ago
Other questions:
  • The sum of the digits of a two-digit number is 10. When the digits are reversed, the new number is 18 less than the original num
    6·1 answer
  • 0.5(3 repeating) as a fraction
    9·1 answer
  • Alfonso mails a package that weighs 9 pounds.How many ounces is this package
    5·1 answer
  • Identify the correct trigonometry formula to use to solve for the given angle.
    9·1 answer
  • Help me please again
    5·1 answer
  • Fourteen decreased by three times four
    13·2 answers
  • 5. In Quadrilateral ABCD,
    13·1 answer
  • Helppp!
    9·2 answers
  • Your bank account balance is -$20.85. You deposit the $15.50. What is your new balance?
    13·1 answer
  • Write an equation of a line that is perpendicular to y = 2/3 x + 8 and has a y-intercept of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!