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Lapatulllka [165]
3 years ago
13

Three students buy lunch in the cafeteria One student buys 4 hamburgers, 4 orders of tries, and 1 soda for $21. Another student

buys 1 hamburger, 1 order of fries, and 1 soda for $5. The third student buys 1 hamburger and 1 order of fries for $5. If possible, find the cost of each item Interpret the results Select the correct choice below and, if necessary,fill in any answer boxes within your choice. OA. The cost of a hamburger is S□ The cost of an order of ties is S[] The ost of a soda is S 。B. t's not possble to determine the cost of oach item because the system has infi tely many solutions. Tho students e Round to the nearest cent as needed.) h have a different y rond prepaid meal plan. ○ С. It s rot possible to do omrino tho ost of oach item beause the system has no solution One of the students was charged incorrectly Click to select and entet your answor)
Mathematics
1 answer:
icang [17]3 years ago
7 0

Answer:

The answer to your question is letter C

Step-by-step explanation:

Data

hamburgers = h

fries = f

soda = s

Student 1         4h + 4f + 1s = 21

Student 2         1h + 1f + 1s = 5

Student 3         1h + 1f        = 5

From the data of students 2 and 3 we can conclude that the system will not have a solution because is not possible that one student has charged 3 items for the same cost of student 3 that bought only 2 items.

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Solve the system of linear equations by substitution 12x+y=−4 y=2x+16
ki77a [65]

Answer:

Your solution is (-10/7, 92/7)

Step-by-step explanation:

12x + y = -4

y = 2x + 16

To use substitution, we want to plug one variable's equation into the other equation.

We can see that y is already solved for us. Plug y into the first equation.

12x + y = -4

12x + (2x + 16) = -4

Combine like terms.

14x + 16 = -4

Subtract 16 from both sides.

14x = -20

Divide both sides by 14.

x = -20/14

x = -10/7

Now that we know x, we will plug it into one of the other equations.

y = 2x + 16

y = 2(-10/7) + 16

Multiply.

y = -20/7 + 16

Add.

y = -20/7 + 112/7

y = 92/7

Your solution is (-10/7, 92/7)

Hope this helps!

8 0
3 years ago
Find the value of x.
Svetach [21]

Answer:

35

Step-by-step explanation:

x + 55 = 90

x = 90 - 55

x = 35

4 0
3 years ago
Read 2 more answers
Please answer it would help me a lot
Deffense [45]
Find if all the ratios are proportional to 1:8. 2:16 is, so is 3:24, and 4:32. 4.5*8=36, and 5:40 is proportional. 6:48 is, and 6.5*8=52. The table is proportional, just divide the pay by the hours and you should be getting 8.
5 0
3 years ago
Find the perimeter. Simplify your answer.
andrew-mc [135]

Answer:

3a+ 16

Hope this helps!

7 0
3 years ago
Branliest offered
blsea [12.9K]
The circumference can be obtained fairly easily by simply substituting the d in c = πd for the colony's given diameter of 12 mm. Performing that calculation using the approximation of π ≈ 3.14, we obtain a circumference of 12 x 3.14 = 37.68 mm.

To find the radius, remember how the diameter and radius of a circle are defined. The radius is a length extending from the center of a circle to a point on its circumference, and a diameter is a line extending from one point on the circle's circumference to an opposite point, passing through the circle's center along the way. The diameter can, in this way, be defined as twice the length of the radius, which means we can find the radius of a circle by taking half of its diameter. In this case, our diameter is 12 mm, so our radius would be 6 mm.
7 0
3 years ago
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