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
givi [52]
2 years ago
11

Can someone help me with system of equations?

Mathematics
1 answer:
nignag [31]2 years ago
3 0
2x + y = 350
x + 2y = 475 
3x + 3y = 825
x + y = 275
x = 275 - y 
(plug back into first equation) 
2(275 - y) + y = 350
550 - 2y + y = 350 
550 - y = 350
-y =-200 or y = $200 (dog)
therefore, x = $75 (cats)
Check
2(75) + 200 = 350
75 + 400 = 475 
HAPPINESS! :)
You might be interested in
If the track makes 30 miles in 25 minutes, find the time it will need to cover 25 miles
dimulka [17.4K]

Answer:

  • About 21 min

Explanation:

Distance and time are directly related, meaning that distance / time = constant.

In this case the constant is the rate or speed.

Thus you can write:

  • speed = distance / time

And, given that covering 30 miles requires 25 minutes, to calculate the time needed to cover 25 miles, you can set this proportion:

  • 30 miles / 25 min = 25 miles / t

To clear t you do cross multiplication:

  • t × 30 miles = 25 miles × 25 min

Divide both sides by 30 miles:

  • t = 25 miles × 25 min / 30 miles = 20.8 min ≈ 21 min ← answer

8 0
3 years ago
3. Serena is the manager of the coffee shop. The amount of money she earns is represented by the equation = 21ℎ, where ℎ is the
spin [16.1K]
I don't think this can be answered without any information on Gabe
7 0
3 years ago
Read 2 more answers
HELP SMART PPL!!!!!!!!!!!!!!!!!
mezya [45]

Answer:

33.75

Step-by-step explanation:

45x0.75=33.75

3 0
3 years ago
Question #3) 3 times of 5 feet inch=____feet ____ inches
Kamila [148]
I assume that you mean 3 times 5 feet means how many feet and inches

so the answer is 5 feet and <u>blank </u> inches

or 12 inch in 1 feet so 12 times 5=60 so 60 inches

or you may have forgotton to put a number before the first inch word like 5 feet <u>3</u> inch
6 0
3 years ago
Minimize Q=x^2+2y^2, where x+y=3
Studentka2010 [4]
<span>The first step you need to do is to rewrite
x+y=3
as y=3-x
</span><span>Now we can replace the y in the equation with our newfound value for y, which is
y=3-x.
So lets write it now like this
Q=x^2+2(3-y)^2
=x^2+18-12x+2x^2
=3x^2+18-12x
</span>Hope this helps
6 0
3 years ago
Other questions:
  • The sum of two numbers is 30. the difference of the two number is 4. what number is lesser
    7·1 answer
  • use the given endpoint r and midpoint m to line rs to find the coordinates of the other endpoint s. r(6,0) m(0,2)
    14·1 answer
  • What is the solution of the equation below?x/6=x-4/2
    6·2 answers
  • HELLP I WILL GIVE YOU A CROWN
    15·1 answer
  • An auto manufacturer estimates that its newest sport utility vehicle travel 192 highway miles on one tank of gas. Sport utility
    5·1 answer
  • What is the cosine ratio of ∠Z?
    6·2 answers
  • I need help anyoneeeeeee
    6·1 answer
  • Solve for a missing factor,
    10·2 answers
  • Enter the unknown number that makes the equation true. 75 + 3 x ☐ = 372
    11·2 answers
  • Solve the inequalities by graphing. Select the correct graph. 2x - y &gt; 4 2x - y &lt; -2
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!