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
Anuta_ua [19.1K]
3 years ago
12

Substitute 3x+y=4 5x-y=22

Mathematics
1 answer:
Mrac [35]3 years ago
4 0
Simultaneous Equations

3x + y = 4
5x  - y = 22
The signs of the matching values aren't the same so we add the rest of the equations.
8x = 26
Divide both sides by 8 to get x = 3.25
Now substitute back into the first equation.
(3 x 3.25) + y = 4
9.75 + y = 4
Subtract 9.75 from both sides
y = -5.75
You might be interested in
The sidewalks on both sides of Peach St, are parallel. One sidewalk can be modeled by the equation 2x - y=-1. Which equation cou
Otrada [13]

Answer:

I believe the answer would be d

Step-by-step explanation:

4 0
3 years ago
At the flower show, 1 trolley arrives every 4 minutes to take people to the Rose Pavilion, another trolley arrives every 10 minu
IrinaK [193]

Answer: 20 minutes

Step-by-step explanation: i don’t feel like explaining

5 0
3 years ago
Read 2 more answers
Find the equation of the line in slope-intercept form.<br> m=− 4 7 through (14, 3
kakasveta [241]

Answer:

The answer to your question is:   y = -47x + 661

Step-by-step explanation:

Data

m = - 47         I wasn't sure if the slope was -47 or -4.

Point (14, 3)

Formula

(y - y1) = m(x - x1)

Process

                  (y - 3) = -47(x - 14)

                   y - 3 = -47x + 658

                   y = -47x + 658 + 3

                   y = -47x + 661

5 0
3 years ago
SOMEONE ANYONE PLEASE...SMART ANSWER?​
In-s [12.5K]

A triangle needs a total of 180° to be a complete triangle. First let's solve for m∠B since we have the other angles given in that triangle.

30 + 70 = 100

180 - 100 = 80° still needed to form a complete triangle. This is what m∠B equals.

From the image provided, we can see that both triangles are the exact same. So all we need to do now is find the angle that matches m∠B. In this case that angle is m∠D. Knowing that m∠B = 80° the final answer is:

m∠D = 80°

Hoped This Helped! Good Luck!

5 0
3 years ago
Read 2 more answers
Write 0.8 as a fraction. A)29 B)49 C)79 D)89
fredd [130]
79 
Hope that helped 
:)

3 0
3 years ago
Read 2 more answers
Other questions:
  • A tiny but horrible alien is standing at the top of the empire state building (which is 443 meters tall) and threatening to dest
    11·2 answers
  • If komal's salary of $2000per month is increased by 5.5%,what is his new salary
    14·1 answer
  • How is inductive reasoning used to recognize mathematical relationships?
    6·1 answer
  • How can I get the average?
    7·1 answer
  • What is the remainder when the polynomial f(x)=3x^3-4x^2+2x+8 is divided by (x-5)
    7·1 answer
  • Jamey has 44 sports cards. Jamey has 8 more than twice as many sports cards as Steven. How many sports cards does Steven have?​
    9·1 answer
  • What is the maximum of f(x) = sin(x)?
    15·2 answers
  • Use the number line.what fraction of 1 foot is 3 inches? what fraction of 1 yard is 3 inches​
    9·1 answer
  • Mary needs to buy bread and milk for her church picnic. At a supermarket A, she would pay $44.20. At supermarket B, she would pa
    15·1 answer
  • What is the value of the underlined digit?<br> 14.097 <br> 7 being underlined
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!