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
son4ous [18]
3 years ago
5

Two models of cellular telephones, red and blue, are stored in boxes. One box weighs twelve pounds and contains four of the red

models and one blue model. Another box weighs eight pounds and contains one blue model and two red models. How much does each model weigh?
Mathematics
1 answer:
GenaCL600 [577]3 years ago
5 0
First, make a equation in which r= red and b=blue.

So, since in the first box it has 4 red models and one blue model equaling 12,

the first equation looks like 4r+b=12.

The second equation looks like 2r+b=8.

What you would do is try and first solve for r by getting rid of b.

Since both equation has a positive b, you would make one equation have a negative b by multiplying the whole equation by -1.

-1*(2r+b=8)= -2r-b=-8

Add.

4r+b=12
+(-2r-b=-8)

2r=4
r=2

Then, you plug in 2 for the r for any of the original equations.

4(2)+b=12

8+b=12

b=4

or

2(2)+b=8

4+b=8
b=4

So, the red models weigh 2 pounds while the blue models weigh 4.



You might be interested in
Question 3
REY [17]
<span>Question 3 
Solve for d.

13d + 4 = 43
13d = 39
    d = 3

answer
A. 3

</span><span>Question 4 
Solve for r.

4r - 6 = 30
4r = 36
  r = 9

answer

D. 9
</span>

<span>Question 5 
Solve for u.

126 = 6u
u = 126/6
u = 21

answer

B. 21

</span>
4 0
3 years ago
Which linear inequality is represented by the graph graph​
trasher [3.6K]

Answer: choice A

Step-by-step explanation:

7 0
3 years ago
Sarah found the mean of a set of numbers to be 205.09.how should she read this value out loud?
Elena-2011 [213]
Two hundred and 5, point zero nine or 0 9
6 0
3 years ago
Read 2 more answers
50 POINTS, PLEASE ANSWER
ludmilkaskok [199]

Step-by-step explanation:

Part 1:

Rotation counterclockwise 90 &degree; of a point is

Here is a table of the transformation of all four points:

P(-7,0)-> P'(-0,-7) =P'(0,-7)

A(-4,2)-> A'(-2,-4) 

R(-3,0)-> R'(0,-3)

K(-6,2)-> K'(-2,-6)

The initial and rotated images are shown attached.

Part 2: it needs to be done with the technology tool that you have.  We can check your work if you post what you did.

7 0
3 years ago
Read 2 more answers
What is the total price of a 10000 car plus 7.5% sales tax
Shkiper50 [21]
Total price = Original price + (original price * sales tax decimal)

Total price = 10000 + (10000 * 0.075) 
= 10000 + 750

Your price on the car is 10,750
8 0
3 years ago
Other questions:
  • What are two`fractions whose product is -3/5
    9·1 answer
  • What are the two ordered pairs for 5x=-1
    12·1 answer
  • Kim is applying for a job that will pay her $14.75 per hour plus a living
    5·2 answers
  • Graph y=2x+3 and it's inverse
    7·1 answer
  • If Cody has 11 dimes and quarters in his pocket, and they have a combined value of 170 cents, how many of each coin does he have
    13·1 answer
  • Help me please! :Will give brainliest!:
    10·2 answers
  • What should be the first step to solve the equation?
    14·1 answer
  • Math experts!! Please factor this completely thank you
    8·1 answer
  • Which of the following is the most precise measurement?
    14·1 answer
  • Bailey went out to dinner. It cost $ 45.00. He wanted to leave a 20% tip for his waitress. Find the tip.​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!