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
Setler [38]
3 years ago
8

Which sentence below represents the number of test questions in the problem below?

Mathematics
1 answer:
katrin2010 [14]3 years ago
4 0

Answer: there are 10 multiple choice questions and 15 short-answer questions

Step-by-step explanation:

Let x represent the number of multiple choice questions in the test.

Let y represent the number of short-answer questions in the test.

If the test has 25 questions, it means that

x + y = 25

Multiple-choice questions are worth 2 points, and short-answer questions are worth 4 points. The test is worth a total of 80 points. It means that

2x + 4y = 80 - - - - - - - -1

Substituting x = 25 - y into equation 1, it becomes

2(25 - y) + 4y = 80

50 - 2y + 4y = 80

- 2y + 4y = 80 - 50

2y = 30

y = 30/2 = 15

x = 25 - y = 25 - 15 = 10

A. The number of multiple-choice questions plus the number of short-answer questions is 25.

You might be interested in
PLZ ANSWER ASAP IT IS A TEST AND IF YOU HELP ME I WILL GIVE YOU A $5 visa gift card.
Vitek1552 [10]

Is this the whole equation?

Step-by-step explanation:

Cuz if not we need the whole question

5 0
3 years ago
Why don't negative values of h and t make sense?
Anni [7]
It really depends what you're understanding or how the problem is set up.
5 0
3 years ago
Rezolvati 1) -2x+1= -7 2) 6+3x= -54+x 3) 2x+9= 7 +x 4) 3-2x= -x -6 5) -3(x+1) = -6 6) -4 (x -2)=12 7) -7(x-3)= -14
Natalija [7]
<span>Răspunsurile sunt

1. x= 4
2. x = -30
3. x = -2
4. x = 9
5. x = 1
6. x = -1
7. x = 5
</span>
3 0
3 years ago
Pleaseeeeeeee help me
tino4ka555 [31]

Answer:

x = 24

Step-by-step explanation:

10:8

10(3) = x(3)

x = 8

30 : 24

7 0
3 years ago
Read 2 more answers
7. 2(a + 1) = 2(2-3)​
sdas [7]

Answer:

#YOUCHEAPSUCKA

the answers is = -2

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • there are 60 boys and 72 girls in a school. the principle wants to divide the students into gender-specific groups ( all boys or
    9·1 answer
  • Evaluate y = ex + 1 for the following values of x. Round to the nearest thousandth. x = −2, y ≈ x = 1, y ≈ x = 2, y ≈
    6·2 answers
  • How many times does 81,000 goes into 8,000
    14·1 answer
  • Round 34 to the nearest 10
    10·2 answers
  • I need help pleaseeeeee
    7·1 answer
  • The quotient of a number and -7, decreased by 2, is 10
    5·1 answer
  • What is the circumference (in inches) of a circle with radius of 5 inches? Use 3.14 for n.
    8·2 answers
  • Write in base two the following numbers: one, two, four, eight, and sixteen.
    12·1 answer
  • when graphing a system of equations with "the same"or "different" in order to make the sentence a true statement ______________.
    9·1 answer
  • Find x in the diagram below. T 1 35.4° 20.2° 252​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!