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
Marina CMI [18]
3 years ago
15

Mr. Martin’s math test which is worth 100 points has 29questions. Each problem is worth 2points or 5 points. X represents number

of 5point questions and y represents questions worth 2 points. X+y=29, 5x+2y=100 How many problems of each point value are on the test?
Mathematics
1 answer:
adell [148]3 years ago
3 0

Answer:there are 14 5point problems and 15 2point problems on the test.

Step-by-step explanation:

x represents number of 5 point questions and y represents questions worth 2 points.

The total number of questions in the test is 29. It means that

x + y = 29

x = 29 - y

Mr. Martin’s math test is worth 100 points. It means that

5x + 2y = 100 - - - - - - - - -1

Substituting x = 29 - y into equation 1, it becomes

5(29 - y) + 2y = 100

145 - 5y + 2y = 100

- 5y + 2y = 100 - 145

- 3y = - 45

y = - 45/-3

y = 15

x = 29 - y = 29 - 15

x = 14

You might be interested in
Justin owns a food truck that sells tacos and burritos. He only has enough supplies to
vfiekz [6]

Answer:

The solution in the attached figure

One possible solution is the point (30,60)

Step-by-step explanation:

Let

x -----> represents the number of tacos sold

y -----> represents the number of burritos sold

we know that

------> inequality A

-----> inequality B

using a graphing tool

The solution is the triangular shaded area

see the attached figure

One possible solution is the point (30,60)

Remember that if a ordered pair is a solution of the system of inequalities, then the ordered pair must lie on the shaded area of the solution

so

That means----> The number of tacos sold is 30 and the number of burritos sold

Verify

Substitute the value of x and the value of y in each inequality

Inequality A

----> is true

Inequality B

----> is true

The ordered pair satisfy both inequalities, then the ordered pair is a solution of the system

Read more on Brainly.com - brainly.com/question/13301815#readmore

Step-by-step explanation:

3 0
3 years ago
Solve t-v/r=k, for v
Arisa [49]

Answer:

t-v/r = k

t-k = v/r

v = r(t-k)

Hope this helps!

6 0
3 years ago
Eli has saved $8 more than 1/3 of Angela’s savings.If they each save $10 more Eli will have saved &4 more than Angela’s savi
klasskru [66]

Answer:

$34

Step-by-step explanation:

7 0
3 years ago
A chemist is using 381 milliliters of a solution of acid and water. If 17.4% of the solution is acid, how many milliliters of ac
Romashka-Z-Leto [24]

Answer:

  66.3 mL

Step-by-step explanation:

  17.4% of 381 mL is ...

  0.174 × 381 mL = 66.3 mL

7 0
3 years ago
HELP WITH MATH WILL GIVE 10 POINTS, GOOD RATING, AND BRAINIEST
nirvana33 [79]

Answer:

ok.....mmmm............

3 0
3 years ago
Read 2 more answers
Other questions:
  • Write the rule for the nth term of the sequence. Then find a11-3.5, 3, 2.5, 2, 1.5, ...
    8·1 answer
  • What is the measure of angle 1?
    12·1 answer
  • A car moved at a constant velocity during the first hour. It stopped for 2 hours at a mall and then moved ahead again at a const
    8·2 answers
  • What is -5/8 divided by 9/10?<br><br> A: -25/36<br> B:-9/16<br> C: -45/80<br> D: -1/36
    12·1 answer
  • What are the coordinates of the point 3/4 of the way from<br> A(-6, -3) to B(10, 9)?
    15·1 answer
  • *Describe the slopes + the y intercepts of the solutions:
    6·2 answers
  • Write an equation for the statement and then solve
    15·1 answer
  • A store buys cell phones from the manufacturer for $34.40 and marks them up by 85%. What is the sale price of the phones in the
    6·1 answer
  • What is the length of x in the diagram below?
    12·2 answers
  • Hercules chopped 30 carrots in 15 minutes. Find his chopping rate in<br> carrots per minute
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!