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
alexandr1967 [171]
3 years ago
5

A coffee stand sells cups of coffee for $6 and cups of tea for $3 . Tuesday, a total of 75 cups were sold, and the total money c

ollected was $312 . How many cups of coffee and how many cups of tea were sold?
Mathematics
1 answer:
gtnhenbr [62]3 years ago
5 0
C + t = 75......c = 75 - t
6c + 3t = 312

6(75 - t) + 3t = 312
450 - 6t + 3t = 312
-6t + 3t = 312 - 450
-3t = - 138
t = -138/-3
t = 46 <=== 46 cups of tea were sold

c = 75 - t
c = 75 - 46
c = 29 <=== 29 cups of coffee
You might be interested in
What type of sample produces valid results?
Finger [1]
I would say D the other answers seem wrong
3 0
2 years ago
Under certain conditions the pressure of a gas varies directly with the temperature. When the pressure is 900 psi, the temperatu
Crank

Answer:

180psi

Step-by-step explanation:

Step one:

given data

P1= 900 psi

T1= 350°C

P2=?

T2=70°C

Required

The final pressure P2

<em>Gay-Lussac's Law: The Pressure Temperature Law. This law states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. With an increase in temperature, the pressure will go up</em>

Applying the expression

P1/T1= P2/T2

substitute:

900/350= P2/70

2.57=P2/70

cross multiply

P2= 2.57*70

P2=180psi

8 0
3 years ago
Hi can you guys please help me on these two?!
lesya692 [45]

Answer:

1. R and Z      2. AC and AE

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Find the area of the figure below
satela [25.4K]

Answer:

The total area is 300 ft^2

Step-by-step explanation:

First find  the area of the rectangle

A = l*w = 24*10 = 240

Then find the area of the triangle on the top

A = 1/2 bh

The base is 24 and the height is 15-10 = 5

A = 1/2 (24)*5 = 60

Add them together

240+60 = 300

The total area is 300 ft^2

7 0
3 years ago
Read 2 more answers
Explain each part of the slope-intercept equation: y = -3x + 5 <br> HELP PLS
yanalaym [24]
Y=mx+b

b represents your y-intercept
mx represents your slope
6 0
2 years ago
Other questions:
  • Ellie practices piano 23 h per day, several days each week. She practiced piano 3223 hours during the summer.
    14·2 answers
  • A thermometer is taken from a room where the temperature is 23oC to the outdoors, where the temperature is −9oC. After one minut
    11·1 answer
  • List the sides of each triangle from shortest to greatest
    8·1 answer
  • Simple and easy question<br> please help
    8·2 answers
  • P(4 and C) I need help asap
    7·1 answer
  • Daily demand for a product is 50 units, with a standard deviation of 30 units. The review period is 5 days and the lead time is
    12·1 answer
  • Help! Thx so much its pretty easy! u guys r da best!
    9·2 answers
  • What is 0.564 written in expanded form?
    13·1 answer
  • If two lines are perpendicular, then they form right angles. If two lines meet at 90 angles. then they are perpendicular. Two li
    10·2 answers
  • What is the surface area of this shape
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!