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
LuckyWell [14K]
2 years ago
11

A group of 18 people ordered soup and sandwiches for lunch. Each person in the group had either one soup or one sandwich. !e san

dwiches cost $7.75 each and the soups cost $4.50 each. If the total cost of all 18 lunches was $113.50, how many sandwiches were ordered?
Mathematics
2 answers:
Nikolay [14]2 years ago
4 0
4.5(18-y)+7.75y=113.5
My justification fir wirting the equation like this is beacuse the total equals how many people ate over all minus how many people ate the soup. (X=18-y) y=soup x=sandwiches
81-4.5y+7.75y=113.5
We distributed
Now its time to combine like terms.
3.25y+81=113.5
I only subtracted beacuse the 4.5 was negative
Subtract 81 from both sides
3.25y=32.5
Divide by 3.25 on both sides
Y=10
Now that we have that we insert it back into the equation
x=18-(10)
So x=8
Basically, 8 sandwiches were ordered :D
mina [271]2 years ago
3 0
So if the sandwiches cost $7.75 each and the total was $113.50 that would mean that there were 14 sandwiches bought. So 14 times 7.75 is 108.50. 
You might be interested in
What is 825x92. (just practice for 25 points)
Leno4ka [110]
75900 is your answer.
6 0
3 years ago
Read 2 more answers
Nine million, twenty three thousand in digits
Anna007 [38]

Answer:

the answer to your question is 9,023,000.

I hope this helps you, have a wonderful day!

7 0
2 years ago
Read 2 more answers
What is the image of (4,-7) after a reflection over the line y=x
snow_lady [41]

Answer:

(-4,7)

Step-by-step explanation:

solved by graphing

3 0
3 years ago
Given the parent function f(x) = 2^x, which graph shows f(x) + 1?
mixer [17]

Answer: First Option

a) exponential function going through point (0, 2) and ending up on the right

Step-by-step explanation:

Look at the attached image, the red line represents a function of the form:

f(x) = 2^x

Note that this function cuts to the axis and at the point (0, 1)

Also when x tends to ∞ f(x) tends to ∞ and when f(x) tends to -∞ then f(x) tends to zero.

If we perform the transformation y = f(x) +1 then the graph of y is equal to the graph of f(x) displaced 1 unit up. Then the new cutting point with the axis y will be: (0, 2) as shown in the attached image (blue line)

The transform function is y =2^x +1

Finally the answer is the first option

4 0
3 years ago
Find the slope of the line through each pair of points.3) (3, -10), (14, -10)
mariarad [96]

Answer:

the second answer

Step-by-step explanation:

I took the test

4 0
2 years ago
Other questions:
  • What is 21.5 as a fraction in simplest form?
    6·2 answers
  • A rectangle prism has a length of 1/2 inches, a width of 2 inches and a height of 3 1/2 inches
    11·1 answer
  • Given the replacement set {2, 3, 4, 5}, solve 4x – 3 = 2x + 5.
    11·1 answer
  • PLZ HURRY!!!!!!!!!!!!!!!!!!!Jacob is planning a hiking trip for this spring. The graph shows the relationship between time and d
    9·2 answers
  • It costs $6 for a dozen donuts how much does 1 donut cost
    12·2 answers
  • Rochelle bought 4 pieces of ribbon to finish a project. Each puece was 1 5/12 yards long. What is the combined length of the rib
    15·1 answer
  • You roll a 6-sided die. What is P(even)?
    7·1 answer
  • Can some one help me with this<br>​
    11·2 answers
  • Hellllllllllllllllllllllllpppppppppppppppppppppppp
    6·1 answer
  • Distribute to write an equivalent expression. 2n * (n ^ 2 + 3n + 4)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!