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
WARRIOR [948]
2 years ago
7

Solve the system. 3x + 4y = 7 2x-y=1 What does x and y equal

Mathematics
1 answer:
emmainna [20.7K]2 years ago
5 0

Answer:

x=1 y=1

Step-by-step explanation:

Let's use the elimination method.
3x+4y=7
2x-y = 1 (multiply both sides by 4)
8x-4y=4
3x+4y=7

(add both equations together)
11x=11
x=1
Plug x=1 into either of the equations
2(1) - y=1
2-y=1
2=1+y
y=1

You might be interested in
If a sample mean is 7 and the confidence interval is from 4 to 10, then the
Alisiya [41]

Answer:

±3

Step-by-step explanation:

4 - 7 = -3

10 - 7 = 3

5 0
3 years ago
The radius of the Earth is roughly twice the radius of the planet Mars. Raj claims that the volume of the Earth must therefore b
Volgvan
The claim is incorrect. Treating the planets as basic spheres, the formula of the volume of a sphere states that volume = (4/3)(pi*r^3), where r is the radius. Since r is raised to the power of three, then doubling the radius would result in a volume that is 8 times larger than the original.
5 0
3 years ago
Estimate: √106 <br> A. 9<br> B. 10<br> C. 11<br> D. 12
marshall27 [118]
√106=10.29≈10.3
the answer is B.10
3 0
3 years ago
Brian scored 92, 87 and 88 on three science tests. Write and solve an equation to find the score Brian will need on the fourth s
Marta_Voda [28]

Answer:

You would need to score a 93% to have an average of 90.

Step-by-step explanation:

Well, to check my work you would need to find the average.

So, 93 + 92 + 88 + 87 = 360. Then you divide by four; 360 / 4 = 90. ^^

3 0
2 years ago
15.12 for 12 hamburgers per burger
SSSSS [86.1K]

Answer:

15.12 ÷ 12 = 1.26 per burger

7 0
3 years ago
Other questions:
  • Write the equation to represent a line that contains the point (-2, 7) and a slope of -3.
    9·2 answers
  • Need help fast thanks
    7·2 answers
  • Angle WDY= 2x-5, angle XDY=52, and angle WDY= 5x-16 what is angle WDY
    13·1 answer
  • What is the speed of a dolphin that travels 200 miles in 8 hours
    9·1 answer
  • A. greater than 1.<br><br>b. less than 1.<br><br>c. equal to 1
    15·1 answer
  • System of equations ( substitution methods) can someone solve these problems x=3y-5 ; x+y=3 y=x ; 3x+3y=18 y=3x+4 ; 5x-y=0
    10·1 answer
  • What is the approximate circumference of a circle that has a radius of 10 centimeters? (Use 3.14 for ). C=__ cm​
    14·2 answers
  • An=128 •(1/2)^n-1 <br> a5=?<br> ^fifth term
    15·1 answer
  • A box contains 6 red marbles, 4 green marbles, 3 blue marbles, and 2 yellow marbles. If Greg chooses one marble at random 300 ti
    14·1 answer
  • For the function f(x)=(x+6)^3 find f^-1(x)<br> PLEASE HELP THANK YOU!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!