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
Mkey [24]
3 years ago
14

On a quiz, students were awarded a certain number of points for a correct answer and penalized a certain number of points for an

incorrect answer. If a student answered all the questions on the quiz and had c correct answers, her score on the quiz was 25c – 10(15 – c). How many questions were on the quiz?
Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
8 0
Given that the score of the student on the quiz was 25c - 10(15 - c)

It can be seen that the first term of expression for her score (i.e. 25c) shows that 25 marks were awarded to each correct answer.

The second term of the expression (i.e. 10(15 - c)) represent that 10 marks were deducted from each wrong answer.

Thus, the number of wrong answers is 15 - c.

The sum of the correct answers and the wrong answers gives the total number of questions in the quiz.

Thus, the total number of questions in the quiz is given by 15 - c + c = 15.

Therefore, there are 15 questions in the quiz.
You might be interested in
In the equation y = kx, if x is doubled, what happens to y? doubles triples quadruples unknown
s344n2d4d5 [400]
Correct answer is
<u>doubles</u>



7 0
3 years ago
Read 2 more answers
Simplify the exponential expression 48 ^ 1/2​
tester [92]

Answer:  the third option

Step-by-step explanation

5 0
3 years ago
You buy 4.5 pounds of bananas at $0.49 a pound. You hand the cashier a $20 bill. How much change will you get back
VARVARA [1.3K]

Answer:

You get 17.80 cents back

Step-by-step explanation:

4.5 times 0.49 is 2.20 cents

20 minus 2.20 is 17.80 dollars

4 0
3 years ago
POINTS AND BRAINLIEST IF YOU GAVE ME THIS CORRECT!!!
Alona [7]

a. 300x33+300x1

b. 10200

9900+300=10200

7 0
3 years ago
Read 2 more answers
a rectangular pool is 8 yards long 6 yards wide and 5 feet deep .convert the measurements of the length and width to feet​
ExtremeBDS [4]

Answer:

1 yard = 3 feet

Keeping this in mind, we need to multiply the yard lengths by 3 to convert the measurements to feet.

8 feet x 3 = 24 yards

6 feet x 3 = 18 yards

5 feet x 3 = 15 yards

So

8 ft = 24 yd

6 ft = 18 yd

5 ft = 15 yd

plz mark brainliest if this helped :)

5 0
3 years ago
Other questions:
  • How many inches are in 200 meters?
    11·2 answers
  • PLZ HURRY<br> 8. Find y when x = 3, if y = -4 when x<br> = -9.
    12·2 answers
  • BRAINLIESTT ASAP! PLEASE HELP ME :)
    7·1 answer
  • The graph of a function, f(x), is plotted on the coordinate plane.
    11·1 answer
  • The probability of drawing two aces from a standard deck is 0.0059. We know this probability, but we don't know if the first car
    14·1 answer
  • Pls help choose 2 equations !! :) I will mark brainlist
    14·1 answer
  • PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
    6·1 answer
  • The slant height of a cone is 8.45cm
    8·1 answer
  • If f(1) = 5 and f(n) = 4f(n − 1) - 2 then find the value of f(5).​
    6·1 answer
  • Factor this expression
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!