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
Convert 2.4 kg into cg. Please show your work.
Sphinxa [80]
1 kg = 1000 g
1 cg = (1/100) g

2.4 kg
2.4 * 1000 g
2400 g
2400/100 cg
24 cg
7 0
3 years ago
Use the data set to determine which statements are correct. Check all that apply. 35, 41, 18, 75, 36, 21, 62, 29, 154, 70 The me
stepladder [879]
The median is 38.5

The lower quartile is 29

There is an outlier  (154)

The upper quartile is 70 
and
The interquartile range is 70 - 29  = 41
4 0
3 years ago
Jackson hate about 8,351 calories worth of food in a week. About how many calories worth of food does he eat every day?
lawyer [7]

Answer:1193 calories

Step-by-step explanation:

First you divide 8351 by 7 since there are 7 days in a week. You get 1193

3 0
3 years ago
How to borrow if you can't subtract from the lowest number on top
Elis [28]
Go to the number next to the one you cannot subtract from, take one away, and add a one in front of the number you cannot subtract from. e.g. 
27      1(1)7             the answer would be 9
-8             -8


for your problem the answer would be 1109
6 0
3 years ago
Read 2 more answers
Change the following number to Scientific Notation.<br> 0.0080098
AlladinOne [14]
Simple

scientific notation
8.009 × 10-3
4 0
3 years ago
Other questions:
  • 24=12x+6y solve for y
    14·2 answers
  • What is the equation for x in the diagram ?
    6·1 answer
  • What is the definition of an angle?
    11·1 answer
  • Find an equation of the parabola with vertex (-1, -5) and directrix x=-7.
    9·2 answers
  • If triangle ABC is defined by the coordinated A(3,6), B(7,6), C(7,3) is dilated by a scale factor of 3, with resulting vertex A'
    7·1 answer
  • Select the correct answer.
    8·1 answer
  • What is the value of the expression below?<br> 36÷103
    6·1 answer
  • you are in talks to settle a potential lawsuit. the defendant has offered to make annual payments of 23000 29000 56000 and 84000
    5·1 answer
  • Pat needs 14 sticks of pepperoni to make 28 how many do he need to make 36
    11·1 answer
  • Type your answer into the box.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!