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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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4. In one semester, Doug and Laura spent a combined 230 hours in the tutoring lab. If Doug
IRISSAK [1]

Answer:

80 hours

Step-by-step explanation:

let d represent doug, let l represent laura

first, set up a system of equations representing the problem:

since doug spent 10 less than twice the hours laura did, and we know that the total amount of hours they spent together is 230:

l=2d+10

d+l=230

then solve:

*first i rearranged the equations so i can solve this system of equations using elimination method*

l-2d=10

l+d=230

*subtract*

3d=240

d=80

so, doug spent 80 hours in the lab

6 0
3 years ago
Read 2 more answers
Do 12 / 15 and 8 / 10 have the same value? Explain your answer.
yKpoI14uk [10]
Hello there!


12/15 and 8/10 don't have the same value.

Reason: 
let's simplify both.

12/3 = 4

15/3 = 5

12/15 = 5/4


8/2 = 4

10/2 = 5

8/10 = 4/5


5/4 is greater than 4/5

5/4 > 4/5


Hope i helped!

Let me know if you need anything else!

~ Zoe
3 0
3 years ago
Urgent please answer​
Ghella [55]

Answer:

24

Step-by-step explanation:

-12 x -2 = 24

3 0
3 years ago
Read 2 more answers
Find the product or type<br> "impossible"<br> 4<br> [1 -2 1] 5<br> 16]
pogonyaev
The product is 5 the answer
4 0
3 years ago
Write the equation for the line in slope-intercept form (2,-3) (-1/2) ( HELP PLEASE )
prisoha [69]

Answer:

A linear equation is a fancy term for a straight line, which can be created by joining 2 points.

A point can be defined by (x, y), where x and y are the horizontal distance and the vertical distance respectively from point (0,0) (called the origin).

There are 3 ways to define a line:

(1) The slope-intercept form

y = mx + b, in which m is the slope, b is the y-intercept, where the line crosses the vertical axis at (0, b). If values of m and b are given, you can substitute and write the equation right away.

The slope, m, is calculated by rise (vertical difference between 2 points on the line) divided by run (horizontal difference between the 2 points on the line)

Step-by-step explanation:

or example, if 2 points on the line are

(x1, y1) and (x2, y2)

Then slope = (y1– y2)/(x1 — x2)

If m > 0, then the line rises to the right.

If m = 0, then the line is horizontal.

If m < 0, then the line rises to the left.

If the line is in the form x = c, where c is a constant, then the line is vertical.

(2) Point slope form

m = (y — y1)/(x — x1), when (x1, y1) and m are given.

In other words,

m(x — x1) = y — y1

mx — m(x1) = y — y1

y = mx — m(x1) + (y1)

Note that b = -m(x1) + (y1)

(3) linear form

ax + by + c = 0, where a, b, and c are constants.

3 0
3 years ago
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