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
Elodia [21]
3 years ago
5

What is the correct answer and why show your work

Mathematics
2 answers:
Anna11 [10]3 years ago
6 0

Answer:

A7.45x = y

Step-by-step explanation:


We can use a ratio to solve this problem.  Take the total cost of the lunches and divide by the number of lunches.

y = total cost of lunches and

x = number of lunches

74.50             y

-------------- = ------------

10                     x


Using cross products

74.5 x = 10 y

Divide each side by 10

74.5/10 x= 10y/10

7.45x = y


GaryK [48]3 years ago
3 0

Answer:


Step-by-step explanation:

Discussion

There is only one answer that works and that is A. The rest give you strange answers. Each box, no matter how many there are, costs 7.45

Since you don't know the number of boxes, call that x

The total cost is y

Therefore y = 7.45*x

The other choices

B: When you cross multiply the proportion of B, you get

7.45*y = 10x That means the total (y) is multiplied by 7.45 (making y not the total). When you divide by 10, the answer is now meaningless. B is incorrect.

C: C is saying that each box costs 74.50. That was supposed to be the total for 10 boxes. C is getting to be far too big. C is not the answer.

D: They total is y, not 74.5 * y. The answer is getting out of control (too big) if it is D. So D is incorrect.

You might be interested in
2(3-x)-1.4(5-2x)=2x+5.3
Hitman42 [59]
I think the answer is : x = -5.25
7 0
2 years ago
Read 2 more answers
Фd —<br> 969 - 9<br> ХОТХЭ: <br> P
oee [108]

brainly.com/question/24478767

5 0
3 years ago
What is the meaning of gcf in math terms
Scorpion4ik [409]
Greatest common factor
7 0
3 years ago
Pls help i will award brainliest once i fgure it out
Sliva [168]

Answer:

2

Step-by-step explanation:

I'm right I know it!!!!!!!!!

3 0
3 years ago
Read 2 more answers
Suppose a triangle has sides 3, 4, and 5. Which of the following must be true?A. The triangle in question is a right triangle.B.
julsineya [31]
A. It is a right triangle.
A^2 + B^2 = C^2
3^2 + 4^2 = C^2
9 + 16 = C^2
25 = C^2
Square Root
5 = C
Confirmed Right Triangle.
3 0
3 years ago
Read 2 more answers
Other questions:
  • When does a barbershop Quartet have 16 legs
    8·1 answer
  • Which of the following is correct set notation? (1,2,3) 1,2,3 {1,2,3} none of the above
    8·2 answers
  • A 5 kw solar energy system can collect 9000 kwh of energy per year. Arizona electricity is .011 cent per kilowatt hour. The aver
    7·1 answer
  • Three students work independently on a homework problem.
    14·1 answer
  • PLEASE HELP ASAP! Which equation is represented by the graph below? y=e^x+5 y=e^x+4 y=ln x+4 y=ln x+5
    14·2 answers
  • (0.a * 10) - (0.a ÷ 10) = 6.93
    8·2 answers
  • What is 23x4x67+213 divided by 9 -154 x7
    11·1 answer
  • Can a triangle be formed with the sides lengths of 9 cm, 2 cm and 11 cm
    12·2 answers
  • Two sides of a right triangle have lengths of 60 feet and 75 feet.
    5·1 answer
  • (pls ignore this. XXXXX)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!