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
Igoryamba
3 years ago
13

A test is worth 100 points. The test is made up of 40 items. Each item is worth either 2 points or 3 points. Which matrix equati

on and solution represent the situation?
Mathematics
2 answers:
solong [7]3 years ago
5 0

Answer:

c on edg.

Step-by-step explanation:

lidiya [134]3 years ago
4 0

Answer:

Total number of points in the test = 100

Total number of items in the test = 40

Let number of items of 2 points be x and number of items of 3 points be y.

Now, using the given information the situation can be represented by using the following equations :

⇒ x + y = 40 .........(1)

⇒ 2x + 3y = 100 .........(2)

The matrix equation is :

\begin{bmatrix}1 & 1\\ 2& 3\end{bmatrix}\cdot \begin{bmatrix}x\\ y\end{bmatrix}=\begin{bmatrix}40\\ 100\end{bmatrix}

By solving the equation (1) and equation (2), we get :

Solution : x = 20 and y = 20

You might be interested in
A fruitseller bought 50 kg of fruits.He sold 30 kg of fruits for the cost price of 35 kg of fruits and he sold the remaining qua
kirill [66]

Answer:

2% profit

Step-by-step explanation:

x = price

50kg = 50x

30kg => 35x

20kg => 16x

35x + 16x = 51x

51x - 50x = x

50x .............. 100%

x ...................... p%

p = 1×100/50 = 100/50 = 2%

3 0
3 years ago
Read 2 more answers
One base of an isosceles trapezoid is 12 and the other is 20. What is the length of the midsegment?
mr_godi [17]
The length of the midsegment of an isosceles trapezoid is the sum of the two bases, divided by 2. So this means -

(base 1+base2) / 2

(12+20) / 2

32/2

Length of midsegment = 16
6 0
2 years ago
Help please !<br><br> I’ll mark brainliest:)
sashaice [31]
<span>The answer is $4,955.30</span>
7 0
3 years ago
Cara has 25$ to buy dry pet food and treats for the animal shelter. A pound of dog food cost $2 and treats are $1 apiece. If she
alina1380 [7]
Let x be the number of treats bought
Let y be the pounds of food bought

25= 2y+x

Given that she has buys 9 pounds of dog food:

25= 2(9)+x
25=18 +x
25-18 =x
7=x

With the money she has left over, she can buy 7 treats.

Hope I helped :)
5 0
3 years ago
When dividing 39100 by 100 the digits in the quotient will move how many places to the right
Shalnov [3]
It will be living two places to the edith hope this helps good luck
8 0
2 years ago
Other questions:
  • The number 15,___56 rounded to the nearest thousand is 15,000. Which numbers could be the missing digit
    13·2 answers
  • If a scuba diver is experiencing 3.4 atmospheres of pressure, what is the depth of the diver?
    12·1 answer
  • Quadrilateral ABCD has coordinates A (3, 1), B (4, 4), C (7, 5), D (6, 2). Quadrilateral ABCD is a (4 points)
    7·1 answer
  • Weegy solve the system of equations 2x+3y=40 and -2x+2y=20
    8·1 answer
  • What digit is missing from the quotient?
    10·2 answers
  • Answer the question below anything will help
    14·2 answers
  • Andrew is setting up his down-payment for his first car. Andrew invested into the account earning 3.5 simple interest. He earned
    14·1 answer
  • A county fair charges $5 for tickets and $2 for each ride. What is the y-intercept in this scenario?
    12·2 answers
  • Shade one more square to make a<br> pattern with rotational symmetry order 2.
    15·2 answers
  • Find the slope from the following
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!