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
GuDViN [60]
3 years ago
7

On a certain quiz with 25 questions, each correct answer is scored 4 points and each incorrect answer is scored –1 point. questi

ons not answered receive no points. a student who answered 23 questions and had a total score of 82 points answered how many questions correctly? 18 19 20 21 22
Mathematics
2 answers:
Katarina [22]3 years ago
7 0

x correct answers


23 - x incorrect answers


82 = 4x + -1(23 - x) = 3x - 23


105 = 5 x


x = 105/5 = 21


21 right 2 wrong 2 unanswered


Check: 4(21) -1(2) = 84-2=82 good



Ad libitum [116K]3 years ago
6 0

Answer:

21

Step-by-step explanation:

You might be interested in
What is equivalent to 16/81
Lady_Fox [76]
There are a lot of things that are equivalent to 16/81.

16/81 = 0.197530864

Or we can keep multiplying 2 to the numerator and denominator:

16/81 = 32/162 = 64/324 = 128/648
4 0
3 years ago
Read 2 more answers
Matt claims that 1/3 can indicate a point on a number line as well as distance. Is he correct? Explain.
inna [77]
Yes he is correct because 1/3 can be shown on a number line
5 0
3 years ago
Read 2 more answers
I need the answer to 1+1 please
ycow [4]

Answer:

2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Describe how the graph of y=x^2 can be transformed to the graph of the given equation y=x^2+13. A) shift the graph of y=x^2 righ
stiks02 [169]

Answer:

D

Step-by-step explanation:

when a number is added at the end it results in a vertical transformation

8 0
2 years ago
An 11 foot ladder leans against the side of a house. The bottom of the ladder is 6 feet from the side of the house. How high is
Mariulka [41]
Using Pythagoras Theorem,
(b is the length of the ladder from the ground)
11x11=6x6+(b^2)
121-36=(b^2)
85=(b^2)
b= 9.219544457292887
b is approximately 9.2
5 0
3 years ago
Other questions:
  • Round to the nearest ten thousand and then subtract
    12·1 answer
  • Which numbers are perfect squares? Check all that apply
    11·2 answers
  • What is the value of the expression below when y=8 2y+7
    14·2 answers
  • N + 16 = 9 <br><br> Please help me need explanation
    5·2 answers
  • Derive the equation of the parabola with a focus at (-5, 5) and a directrix of y = -1.
    5·1 answer
  • Which of the following is the domain of the given function?
    6·1 answer
  • A caterer prepares twice as many pizzas as she usually prepares for a large party. The caterer usually prepares 6 pizzas. The ca
    7·1 answer
  • 1 1\4x2 1\5 ≤ ≥ = 5\6 x 2 1\5
    6·1 answer
  • Help..........................
    6·1 answer
  • Can you answer I need help​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!