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
siniylev [52]
4 years ago
5

Help is needed quickly.

Mathematics
1 answer:
Elena L [17]4 years ago
3 0

This is for #1. Not sure about 2 and 3.

Example to help you with 2 and 3:

Solve the following pair of simultaneous linear equations:

Equation 1:     2x + 3y = 8

Equation 2:     3x + 2y = 7

Step 1: Multiply each equation by a suitable number so that the two equations have the same leading coefficient. An easy choice is to multiply Equation 1 by 3, the coefficient of x in Equation 2, and multiply Equation 2 by 2, the x coefficient in Equation 1:

   

3 * (Eqn 1) --->      

3* (2x + 3y = 8)

--->    6x + 9y = 24  

2 * (Eqn 2) --->      

2 * (3x + 2y = 7)

--->    6x + 4y = 14         Both equations now have the same leading coefficient = 6

 

Step 2: Subtract the second equation from the first.

          -(6x + 9y = 24

          -(6x + 4y = 14)

           

                    5y = 10

Step 3: Solve this new equation for y.

                    y = 10/5 = 2

Step 4: Substitute y = 2 into either Equation 1 or Equation 2 above and solve for x. We'll use Equation 1.

          2x + 3(2) = 8  

          2x + 6 = 8 Subtract 6 from both sides

          2x = 2 Divide both sides by 2

          x = 1  

Solution: x = 1, y = 2 or (1,2).

You might be interested in
The solution set for -18 < 5x - 3 is
tensa zangetsu [6.8K]

Answer:

Hope this helps

Step-by-step explanation:


6 0
3 years ago
Guys If you buy me a private island with a pterodactyl..:.. i’ll let you be in my Dino club for free :)
Vikki [24]

Ofc! Private island incoming...

️

5 0
3 years ago
Read 2 more answers
Please help me I have
monitta

Answer: a or D

y e s maybe wrong

8 0
3 years ago
Read 2 more answers
Can someone help me with this please
Anni [7]

Answer:

x = 61

Step-by-step explanation:

These 2 angles are supplementary which means they add up to 180:

2x - 6 + x + 3 = 180

3x - 3 = 180

3x = 183

x = 61

3 0
3 years ago
Ordered pairs of y=2/3x+1
Mrrafil [7]

Answer:

(-1.5,0) (0,1)

Step-by-step explanation:

used desmos

6 0
3 years ago
Other questions:
  • Choose the function whose graph is given by:
    11·2 answers
  • HELP PLEASE
    7·1 answer
  • Solve the linear equation <br> 31x + 29y = 33<br> 29x + 31y = 27
    8·1 answer
  • -(12 -13n)<br> (.17k +5x) (.6)<br> -2(5m -25 +1)<br> Show work please
    15·1 answer
  • Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.
    13·2 answers
  • Can someone help me please
    8·2 answers
  • Marlena bought 1 2/3 pounds of French Roast coffee and 3 1/8 pounds of Columbian coffee and paid $31.25. Rowen bought 2 5/12 cup
    15·1 answer
  • Break apart addendsas tens and ones <br> 33<br> +49
    9·1 answer
  • The answer that is selected is just a guess
    5·1 answer
  • The equation f(x)= 2x-9 translate 6 units up is g(x)=
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!