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
Leno4ka [110]
3 years ago
12

Mikhael bought refreshments. Sandwiches were $3 each and bottles of water were $0.75 each. He spent $318.75 on a total of 200 it

ems. Write how many sandwiches and how many bottles of water Mikhael bought. Can someone convert this to a system of equations
Mathematics
1 answer:
Anestetic [448]3 years ago
6 0
X= sandwiches
y= bottles of water

QUANTITY EQUATION
x+y= 200

COST EQUATION
$3x + $0.75y= $318.75

STEP 1
solve for one variable in quantity equation and substitute in cost equation

x+y= 200
subtract y from both sides
x= 200-y

STEP 2
substitute 200-y in for x

$3x + $0.75y= $318.75
3(200-y) + 0.75y= 318.75
600 - 3y + 0.75y= 318.75
combine like terms
600 - 2.25y= 318.75
-2.25y= -281.25
divide both sides by -2.25
y= 125 number of water bottles

STEP 3
substitute y=125 in either equation

x+y= 200
x + 125= 200
x= 75 sandwiches

ANSWER: There were 75 sandwiches and 125 bottles of water.

Hope this helps! :)
You might be interested in
Um i need help with this.
blsea [12.9K]

Answer:

None of these!

Step-by-step explanation:

x + y + z = x + y + z only over here

5 0
3 years ago
Read 2 more answers
Eli works in an electronics repair shop. he earns 9 dollars an hour plus a bonus for each item her repairs.
Jobisdone [24]
The equation is
a=9h+bn
3 0
3 years ago
Read 2 more answers
The Pool Fun Company has learned that, by pricing a newly released Fun Noodle at $3, sales will reach 6000 Fun Noodles per day d
Salsk061 [2.6K]
PART A:
 The generic equation of the line is:
 y-yo = m (x-xo)
 First we look for the slope of the line:
 m = (y2-y1) / (x2-x1)
 m = ((5000) - (6000)) / (4-3)
 m = -1000
 Then, we substitute any point in the generic equation:
 (xo, yo) = (4, 5000)
 Substituting:
 y-5000 = (- 1000) (x-4)
 Rewriting:
 y = -1000x + 4000 + 5000
 y = -1000x + 9000
 The equation is:
 y = -1000x + 9000

 PART B: 
 For the price of 3.50 we have:
 y = -1000 * (3.5) +9000
 y = 5500
6 0
2 years ago
M/9+2/3=7/3<br><br> Solve for m.
Aleks04 [339]
<span>M/9+2/3=7/3
</span><span>M/9 =7/3 - 2/3
M/9 = 5/3
M = 5/3 x 9
M = 15</span>
3 0
3 years ago
Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
igomit [66]

Answer:

<h2><em><u>A=28</u></em></h2>

Step-by-step explanation:

A=0.5bh

A=0.5*8*7

A= 28

6 0
2 years ago
Read 2 more answers
Other questions:
  • Seven fifths of a number, z, subtracted from 6 times the same number is 3 .
    9·1 answer
  • What if we draw three socks from the box instead. what is the probability that we draw a matching pair? (having all three socks
    12·1 answer
  • The positions of two divers from the water's surface after a dive are shown:
    11·2 answers
  • I am confused by this can someone help me, please!<br> Everything is on the photo.
    13·2 answers
  • What is the math word that we use if a<br> thinki<br> graph "flips"? (hint: it starts with an "r")
    13·1 answer
  • Suppose a simple random sample of size n = 14 is obtained from a population with μ = 61 and σ = 17.
    11·1 answer
  • Denise read 38 more pages than Elaine. Elaine read a total of 90 pages. How many pages did Denise read? 128 118 68 52
    15·1 answer
  • A sector of a circle has a central angle measuring 80 degrees. If the area
    11·1 answer
  • I need help please and thank you
    10·1 answer
  • Which graph represents the solution set to the system of inequalities?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!