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
IrinaVladis [17]
2 years ago
15

Problem 10 / (Second Session 2006)

Mathematics
1 answer:
hammer [34]2 years ago
7 0

Answer:

Find other solutions in explanation

x = 250

y = 1750

Step-by-step explanation:

x = cost per copybook

y = cost per pen

2. Sum of the cost of 4 copy books and 3 pen is equal to 7750

3.)

2x+y=2750 - - (1)

4x + 3y = 7750 - - - (2)

From (1)

y = 2750 - 2x

Substitute y = 2750 - 2x into (2)

4x + 3(2750 - 2x) = 7750

4x + 8250 - 6x = 7750

-2x = - 500

x = 500/2

x = 250

y = 2750 - 2(500)

y = 2750 - 1000

y = 1750

You might be interested in
Please Help Thank You So Much
VikaD [51]

Answer:

all the possible values of y - x are 4 and 5

all possible values of x/y = 1

6 0
3 years ago
Which ordered pairs make the equation true?
Nata [24]
(-4,-2)
You just plug in the numbers from the ordered pair, into your equation. Remember, the formula for ordered pairs are (x,y). :)
6 0
3 years ago
Read 2 more answers
11.) Mrs. Collins is buying supplies for her classroom. Pencils cost
ki77a [65]

Answer:

the total cost will be $14

Step-by-step explanation:

a) 0.05p + 0.45f

b) 0.05(100) + 0.45(20)=

5+9

14

4 0
2 years ago
Marc ordered a rug he gave a deposit of 30% of the cost and will pay the rest when the rug is delivered if the deposit was $75 h
o-na [289]
Use proportion, so multiply 100 by 75, then divide it by 30 and that's your answer.....250

6 0
3 years ago
Read 2 more answers
Solve systems substitution. y=4x-13 3x-3y=12
Maru [420]

I have no clue but i wish you the best of luck

7 0
3 years ago
Other questions:
  • a geologist noticed that land along a fault line moved 24.8 cm over 175 yrs on average how much did the land move each year
    7·2 answers
  • Find the inverse of the function x2 + y2 = 4 and the domain of the inverse for 0 ≤ x ≤ 2.
    14·1 answer
  • Write each statement as an algebraic expression.
    15·1 answer
  • Order of operations
    15·2 answers
  • The per capita electric power consumption level in a recent year in Ecuador is normally distributed, with a mean of 471.5 kilo-w
    14·1 answer
  • Two angles are supplementary.The larger angle is 15 more than 10 times the smaller angle. Find the measure of each angle
    7·1 answer
  • Find values that make the sentence correct 1). 6/8=x/12=x/16
    12·2 answers
  • Trigonometry
    5·1 answer
  • unja señora tiene 3 hijos, realiza un diagrama de arbol apoyandote con este material para saber todas las combinasiones posibles
    11·1 answer
  • Help plzzzzzzzzzzzzzzzz
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!