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
RideAnS [48]
3 years ago
10

A restaurant catered a party for 40 people. A child’s dinner (c) cost $11 and an adult’s dinner (a) cost $20. The total cost of

the dinner was $728. How many children and adults were at the party? Use the table to guess and check.
8 children and 32 adults
9 children and 31 adults
10 children and 30 adults
12 children and 28 adults
Mathematics
2 answers:
11111nata11111 [884]3 years ago
8 0

a+c=40

c=40-a

11c +20a=728

11(40-a)+20a=728

440-11a +20a=728

440+9a=728

9a = 288

a=288/9 = 32

32 adults

8 children

kherson [118]3 years ago
6 0
A + c = 40
20a + 11c = 728

Multiply equation # 1 by -11, then add the two equations together to clear the 'c' variable and solve for 'a'.

-11(a + c = 40)


20a + 11c = 728
-11a - 11c = -440
------------------------
9a  = 288
Divide both sides by 9
a = 32

a + c = 40
32 + c = 40
subtract 32 from both sides
c = 8

8 children and 32 adults; option 1
You might be interested in
Why might where you live be a factor in determining your utility costs?
marissa [1.9K]

Answer:

It depends on how much sun the place receives, how much it is shaded. temperature in the area. Do you have solar panels, electric heat, gas? All these factors determine utility cost.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The staff at the Arcola Country Club prepares tables for a wedding reception. They are able to prepare 6 tables in 45 minutes. H
TiliK225 [7]
24

Multiply 6 and 4 to get 24 

They will be able to prepare 24 tables
5 0
2 years ago
Write the equation of a line perpendicular to y= -1/3x + 5 and passes through the point (6, 4).
Levart [38]

Answer:

y = 3x - 14

Step-by-step explanation:

Perpendicular lines will have a opposite reciprocal slope, so the slope will be 3.

Plug in the slope and given point into y = mx + b, then solve for b:

y = mx + b

4 = 3(6) + b

4 = 18 + b

-14 = b

Plug in the slope and y intercept into y = mx + b

y = 3x - 14

So, the equation of the line is y = 3x - 14

3 0
2 years ago
Its due soon help ill give brainliest
Tomtit [17]
The answer is C, 29.75
6 0
2 years ago
Read 2 more answers
Can someone help me with this<br> S=?
MAXImum [283]

Answer:

In order to find the value of s, we must isolate the s variable in this equation, so the first step should be subtracting 3 5/6 from both sides of this equation. In order to subtract, we multiply each denominator to get 42, and multiply the numerator by the same amount, and subtract the number from both sides:

s + 3 35/42 = 9 6/42

s = 5 13/42

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • Any ideas on how to find the value of 'x' on either 13 or 16? Anything helps!
    14·1 answer
  • Sari has a bag containing 6 half dollars. What is the mass of half dollars in Sari's bag when half dollars weighs 11.34 grams?
    15·1 answer
  • If 5(y+10)=40, find the value of 1\4y.
    8·1 answer
  • Maureen went on a 3 day, 50 mile biking trip. The first day she biked 14.3 miles. The second day she biked 21.1 miles. How many
    15·2 answers
  • The Reno Raiders are voting on which player should be their captain for the upcoming season. Brody received 1/3 of the votes. Da
    15·1 answer
  • Help 15 points
    10·2 answers
  • The length of a rectangular park is 20 feet longer than the width of the park. If the lenght of the park is 36 feet, what is the
    8·1 answer
  • WHATS THE ANGLE MEASUREMENTS ?? &amp; TELL HOW YOU GOT IT !!
    15·2 answers
  • Rewrite −x−6 with a positive exponent. Assume x is not equal to zero.
    7·2 answers
  • Becky surveyed The 24th shoppers who spent the most time and money on her bouquet last month which might be the best reason that
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!