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
Karolina [17]
3 years ago
7

a cell phone store sells the basic model of a phone for $30 and the upgraded model for $100 when a customer signs a two-year agr

eement. on tuesday, the store has $900 in sales. the store pays $5 for each basic model and $25 for each upgraded model. if the cost of the cell phones sold on tuesday is $200, how many upgraded models were sold?
Mathematics
2 answers:
alisha [4.7K]3 years ago
8 0
30b + 100u = 900
5b + 25u = 200....multiply by -6
------------------
30b + 100u = 900
-30b - 150u = - 1200 (result of multiplying by -6)
------------------add
-50u = - 300
u = 6 <== upgrated phones sold

30b + 100u = 900
30b + 100(6) = 900
30b + 600 = 900
30b = 900 - 600
30b = 300
b = 10 <== basic phones sold

JulijaS [17]3 years ago
7 0

Answer:

10

Step-by-step explanation:


You might be interested in
Using properties to find the sum and product of 5 times 23 times 2
Nonamiya [84]
The Answer is 230 23*5 is 115*2 is 230
7 0
3 years ago
Please help me solve this question.
mario62 [17]

Answer:

21

Step-by-step explanation:

5×3=15

7×3=21

3 0
3 years ago
Read 2 more answers
When a force of 30 N acts on a certain object the acceleration of the object is 5m/s2 if the force is changed to 54 N what will
PtichkaEL [24]

Answer:

The correct answer is 9 m per second^{2}

Step-by-step explanation:

Force is defined by mass of an object times it's acceleration.

Let the mass of the object be m kilograms.

When a force of 30 N acts on a certain object the acceleration of the object is 5 m per second^{2}

∴ 30 = m × 5

⇒ m = 6.

If the force is changed to 54 N, let the acceleration of the object be x  m per second^{2}.

∴ 54 = m × x

⇒ x = \frac{54}{6} = 9

Thus when the force is 54 N, the acceleration of the object is 9 m per second^{2}.

6 0
3 years ago
What is the inverse of a cubic function called?
Zigmanuir [339]

Answer:

Función inversa

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How can you Express 3 3/8 as a fraction ?​
Solnce55 [7]

Answer:

You mean improper fraction?

3 x 8 = 24

24 + 3 = 27

27/8

3 0
3 years ago
Other questions:
  • 0=x^2-4x+3 how many roots does this equation have
    9·1 answer
  • Ducks unlimited helps sample duck species across the united states. Samples from one particular location for the last two years
    6·2 answers
  • 20 area and 4 is the height what is the base
    12·2 answers
  • What is the equivalent expression for 6(7w)
    5·2 answers
  • Solve the equation.
    12·2 answers
  • The fee for a train pass is 10. The cost per ride is $5. Write an equation where the total cost is represented by y and the numb
    15·1 answer
  • Can someone help me out with this?​
    5·1 answer
  • Plz help i have 3 mins it for 25 points
    5·2 answers
  • How many digits are there in the square root of 4456321?
    11·2 answers
  • Two pentagons are similar. the area of one of the Pentagon is 9 times that the other. determine the ratio of the length of the c
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!