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
Sloan [31]
4 years ago
10

If 10 pencils and 7 erasers cost $4.23 and 3 pencils and 1 eraser cost $0.95, what is the cost of 2 erasers?

Mathematics
1 answer:
QveST [7]4 years ago
8 0

Answer: $0.58

<u>Step-by-step explanation:</u>

Let x represent pencil and y represent eraser

10x + 7y = 4.23   →   1(10x + 7y = 4.23)   →   10x + 7y =  4.23

3x  + y  = 0.95   →  -3(3x  + y  = 0.95)   →   <u>-21x - 7y</u> =<u> -6.65 </u>

                                                                    -11x         = -2.42

                                                                  <u>÷-11          </u>   <u>÷-11       </u>

                                                                         x        = 0.22  

      3x + y = 0.95

3(0.22) + y = 0.95

   0.66 + y = 0.95

               y = 0.29

2y = 2(0.29)  = 0.58


You might be interested in
<img src="https://tex.z-dn.net/?f=8%20-%20%20%7B2%7D%5E%7B2%7D%20%20%2B%203%20-%205" id="TexFormula1" title="8 - {2}^{2} + 3 -
Vlad1618 [11]

The answer should be 8+[(2^2)+3]-5

Hope this helps!


3 0
3 years ago
PLEASE HELPPPPP ME IN BEGGING YOU
Juliette [100K]

Answer:

im going to say its B

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Write a function in any form that would match the graph shown below.
disa [49]

Answer:

0, 5

Step-by-step explanation:

I am not shure that is right but I think an ordered pair is form of a funtion.

6 0
3 years ago
Deon rented a truck for one day there was a base fee of $19.99 and there was an additional charge of 98 cents for each mile driv
scZoUnD [109]

Answer:

Deon drove the truck 201 miles.

Step-by-step explanation:

Base Fee + (.98* Number of miles)= Cost

19.99 + .98x = 216.97

Subtract 19.99 from both sides.

.98x = 196.98

Divide both sides by .98

x = 201

5 0
3 years ago
In one school, half of all students who like math like science as well. Also, in that school, a third of all students who like s
Nimfa-mama [501]

Answer:

2/3

Step-by-step explanation:

If we have 'x' students who like math and 'y' students that like science, we can formulate that:

Half of x likes math and science, and also one third of y likes math and science, so:

(1/2) * x = (1/3) * y

x / y = (1/3) / (1/2)

x / y = (1/3) * 2 = 2/3

So the ratio of the number of students who like math to the number of students who like science is 2/3

3 0
4 years ago
Read 2 more answers
Other questions:
  • The angle of depression from the top of the tree to the tip of the shadow is 25°. Find the height of the tree to the nearest ten
    15·1 answer
  • 704 rounded to the nearest ten
    7·2 answers
  • Who can do this whole thing 70 point and brainlest plz help me and plz explain thank you plz help fast thanks
    6·2 answers
  • Trigonometric problems.<br><br> Could someone help me with this? I’m confused.
    13·1 answer
  • The times it took for 35 loggerhead sea turtle eggs to hatch in a simple random sample are normally distributed, with a mean of
    6·1 answer
  • The price of a math book is 50$ but you only have 35$ if you get a discount of 20% how much money do you need?
    11·1 answer
  • 12z - 3 ≥ 2z - 15 it says my question is too short, so here are more characters.
    11·1 answer
  • Which expressions are equivalent to the expression 30x^2-5x-10
    11·2 answers
  • 30 people liked Brand X. This is 20% of the people in a survey.
    11·1 answer
  • What is the answer for the second one?<br> 7% is the same as ??
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!