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
My name is Ann [436]
2 years ago
9

3 teas and 2 coffees have a total cost of £7.80.

Mathematics
1 answer:
jasenka [17]2 years ago
5 0

Answer:

coffee is £1.80 per cup and tea is £1.40 per cup

Step by Step:

The question can be written algebraically, as:(a) 3t + 2c = 7.80(b) 5t + 4c = 14.20To work out the individual costs, we need to make one of the sets of variables equal. We can do this by multiplying the equation (a), giving (c):(a) 6t + 4c = 15.60(c) 5t + 4c = 14.20We can then subtract (c) from (a), giving:t = 1.40T can then be substituted into the initial equation (a), to work out the value of c:(3 x 1.40) +2c = 7.804.20 +2c = 7.802c = 3.60c = 1.80Finally we can check these values by substituting into (b):(5 x 1.40) + (4 x 1.80) = 7 + 7.2 = 14.20Then make sure to show your answers clearly, with units:coffee is £1.80 per cup and tea is £1.40 per cup

You might be interested in
A cable installer charges $30.00 per hour plus a $50.00 service charge. Your father's firm hires him to hookup his company's int
vladimir1956 [14]
30*8.5=255 255+50=$305
4 0
3 years ago
Read 2 more answers
Asap! please help i’ll give brainliest
Aleonysh [2.5K]

Answer: 2nd one

Step-by-step explanation: Look at the options. In all of the options, the number of 0's is 3 so you don't have to look for the zero's. Next look at the one's. The first 2 have 2 ones and the next 2 have 3. The number of ones in the data is 2 so you can eliminate the last 2. Then look at the 2's between the top 2. In the first one, there is 2 and in the second one there is only one. In the data table, there is one 2 so the answer has to be the 2nd one. Hope this helps :)

6 0
3 years ago
The cost, C. of producing coolers, x, is modeled by the equation C = 0.005x2 - 0.3x + 17. How many coolers are
melamori03 [73]

Answer:

66 coolers

Step-by-step explanation:

C = 0.005x² - 0.3x + 17

When C = $19

19 = 0.005x² - 0.3x + 17

19 - 17 = 0.005x² - 0.3x

2 = 0.005x² - 0.3x

0.005x² - 0.3x - 2 = 0

x = -b ± √b² - 4ac / 2a

= -(-0.3) ± √-0.3² - 4*0.005*-2 / 2*0.005

= 0.3 ± √ 0.09 - (-0.04) / 0.01

= 0.3 ± √ 0.09 + 0.04 / 0.01

= 0.3 ± √ 0.13 / 0.01

= 0.3/0.01 ± √0.13/0.01

= 30 ± 0.36/0.01

x = 30 ± 36

x = 30 + 36 or 30 - 36

x = 66 or -6

Number of coolers can not be negative

Therefore, number of coolers produced when the cost is $19

is 66 coolers

3 0
3 years ago
Translate each phrase into a variable expression. use n for the variable
gayaneshka [121]
N + 2 that is correct
8 0
3 years ago
Read 2 more answers
Write 53,278 in Expanded Form
noname [10]
53,278 can be written as:

50,000 + 3,000 + 200 + 70 + 8
6 0
3 years ago
Other questions:
  • What is the derivative of <br> (ln (7x))^(cos (5x))
    15·2 answers
  • a 24 foot tall tree cast a 30 foot long. a 4 foot tall child is standing nearby how long is the child's shadow
    14·2 answers
  • 3x + 5=. X equals six
    15·1 answer
  • Often in statistics research, a population is too large to collect data on. A sampling distribution of a statistic is created by
    15·1 answer
  • B(t)=100•2^t/10 how many minutes will it take for the culture to achieve 10,000 bacteria? Round answer to nearest hundredth
    14·1 answer
  • Solve plssss vvvvvvvdhhdgd
    11·1 answer
  • You help out at the bowling alley on weekends. One of the arcade games has a bin filled
    9·1 answer
  • PLEASE HELP DUE NOW!!!<br> WILL MARK BRAINLIEST!!!
    12·2 answers
  • The sum of 11 and t is 22
    13·2 answers
  • Please answer my math question <br> The line shown above has an x-intercept of
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!