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
Ludmilka [50]
3 years ago
5

Mr. Martin’s math test, which is worth 100 points, has 35 problems. Each problem is worth either 5 points or 2 points. Let x = t

he number of questions worth 5 points. Let y = the number of questions worth 2 points. x + y = 35, 5x + 2y = 100 How many problems of each point value are on the test? 10 problems worth 5 points and 25 problems worth 2 points 15 problems worth 5 points and 20 problems worth 2 points 20 problems worth 5 points and 15 problems worth 2 points 25 problems worth 5 points and 10 problems worth 2 points
Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
4 0

Answer:

The answer is 10 problems worth 5 points and 25 problems worth 2

Step-by-step explanation:

we take our equation

5x+2y=100

then we put in our x & y

5(10)+2(25)

50+50

100

The first answer is the only one that gets you to 100

Sloan [31]3 years ago
3 0

Answer:

10 problems worth 5 points and 25 problems worth 2 points

Step-by-step explanation:

Let x = the number of questions worth 5 points.

Let y = the number of questions worth 2 points

x+y = 35  since there are 35 problems

5x + 2y = 100  since there are 100 points

Multiply the first equation by -5 so we can eliminate x

-5(x+y) = 35*-5

-5x -5y =-175

Add this to the second equation

-5x -5y =-175

5x + 2y = 100

-----------------------

    -3y = -75

Divide each side by -3

-3y/-3 = -75/-3

y = 25

There are 25 2 point questions

Now find x

x+y = 35

x+25 = 35

x = 35-25

x =10

There are 10 5 point questions

You might be interested in
What is the area of the composite figure in problem 3?
suter [353]

Answer:

trapazoid

Step-by-step explanation:

5 0
3 years ago
A random sample of adult female reaction times has a sample mean of x¯=394.3 milliseconds and sample standard deviation of s=84.
s2008m [1.1K]

Answer:

99.7%

Step-by-step explanation:

Given that mean (μ) = 394.3 ms and standard deviation (σ) = 84.6 ms.

The empirical rule states that for a normal distribution:

  1. 68% falls within one standard deviation (μ ± σ)
  2. 95% falls within two standard deviation (μ ± 2σ)
  3. 99.7% falls within three standard deviation (μ ± 3σ)

one standard deviation = 394.3 ± 84.6 = (309.7, 478.9). 68% falls within 309.7 and 478.9 ms

two standard deviation = 394.3 ± 2 × 84.6 = (225.1, 563.5). 95% falls within 225.1 and 563.5 ms

three standard deviation = 394.3 ± 3 × 84.6 = (140.5, 648.1). 99.7% falls within 140.5 and 648.1 ms

8 0
3 years ago
Given a soda can with a volume of 36 and a diameter of 4, what is the volume of a cone that fits perfectly inside the soda can?
spin [16.1K]
First we need to find the heigh of the soda can be rearanging the volume formula, . We can make that  We know that V is 36 and radius is half of the diameter, so radius is 2. 

h = 2.87

Now, we can use the height to figure out the volume of a cone. The volume of a cone is 
R is 2 again and h is 2.87


12.56*.96 = 12.0576
So a cone with a volume of 12.0576 is the largest that will fit into the soda can
6 0
3 years ago
Read 2 more answers
Leo and her on spent 3/4 hour shopping 5/6 hour preparing the pizzas and 11/12 hour cleaning up after the party how many minutes
Aneli [31]

Answer:

150 minutes

Step-by-step explanation:

First we have to express all these fractions of an hour in minutes, then add them and get the total of minutes.

To pass these numbers in hours to minutes, we only have to multiply by 60 because one hour has 60 minutes.

3/4 h =

3/4 * 60 = 45m

5/6 h =

5/6 * 60 = 50m

11/12 h =

11/12 * 60 = 55m

to calculate the total number of minutes we have to add the 3 values ​​that we have

45m + 50m + 55m = 150m

8 0
4 years ago
What is the value of |-7| - |3|
Rudik [331]

Answer:

4 is the correct answer

Step-by-step explanation:

|-7| = 7

|3| = 3

7 - 3 = 4

3 0
2 years ago
Other questions:
  • #4 PLS I WILL GIVE BRAINLIEST
    5·1 answer
  • can someone explain to me how you move lines, quadrilaterals, triangles etc. 90 degrees, 180 degrees and, 270 degrees?? my teach
    13·2 answers
  • Adult tickets to a play cost $22. Tickets for children cost $15. Tickets for a group of 11 people cost $228. Write and solve a s
    7·1 answer
  • select all the sets that are the three side lengths of right triangles A.8,7,15 B.4, 10, √84 C. √8, 11, √129 D. √1, 2, √3
    15·1 answer
  • Can somebody help me with this question, my brain has evaporated.
    6·1 answer
  • ariana takes a handful of cookies and divides them evenly between her 3 kids. then she grabs one more cookie for each kid. if ea
    10·1 answer
  • Which expression is not equivalent to Negative 3 x minus one-half 4 y? 2 y minus 5 x minus one-half 2 y 2 x Negative 2 x minus o
    11·2 answers
  • What is the factored form of 2x3 + 4x2 - x?
    10·1 answer
  • A square on a coordinate plane is translated 9 units down and 1 unit to the right. Which function rule describes the
    7·1 answer
  • Radicales simples ……….
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!