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Ahat [919]
3 years ago
15

HELPPPPP PLZZZZZZZZZ​

Mathematics
1 answer:
rjkz [21]3 years ago
8 0

Answer: 14

Step-by-step explanation:

10.5 / 3 = 3.5

4 x 3.5 = 14

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Choose a method you prefer to solve for a system of linear equations.<br> 2x + 4y = -4<br> 2x-y=6
Artyom0805 [142]

Answer:

Elimination

x = 2

y = -2

Step-by-step explanation:

Elimination

2x + 4y = -4

2x - y = 6

Subtract the second equation from the first

5y = -10

Divide both sides by 5

y = -2

---------------------

Substitute for y = -2 in the second equation

2x - -2 = 6

2x + 2 = 6

subtract 2 from both sides

2x = 4

Divide both sides by 2

x = 2

7 0
3 years ago
Substitute this equation x+3y=18 &amp; -x-4y=-25
sveticcg [70]

Answer:

 {x,y} = {3/7,-43/7}

Step-by-step explanation:

System of Linear Equations entered :

  [1]    x + 3y = -18

  [2]    -x + 4y = -25

Graphic Representation of the Equations :

   3y + x = -18        4y - x = -25  

 

 

Solve by Substitution :

// Solve equation [1] for the variable  x  

 

 [1]    x = -3y - 18

// Plug this in for variable  x  in equation [2]

  [2]    -(-3y-18) + 4y = -25

  [2]    7y = -43

// Solve equation [2] for the variable  y  

  [2]    7y = - 43  

  [2]    y = - 43/7  

// By now we know this much :

   x = -3y-18

   y = -43/7

// Use the  y  value to solve for  x  

   x = -3(-43/7)-18 = 3/7  

Solution :

{x,y} = {3/7,-43/7}

5 0
3 years ago
Please help me I need help
vladimir2022 [97]
Idk but I think the answer you are looking for is D
3 0
3 years ago
Read 2 more answers
Please help me ... Tim has developed a money saving strategy that use the formula S=450+100r give a possible interpretation of T
qwelly [4]
Im not completely sure, because I have to know what S and R mean; however, the equation is basically saying that the amount of money saved= is 450$ and every time he does “R”, he saves another 100$
7 0
4 years ago
HELP! What is the value of X in the following parallelogram? WILL GIVE BRAINLIEST!
zavuch27 [327]

Answer:

x = 2

Step-by-step explanation:

<u>Step 1:  Set 3x - 2 equal to 5x - 6 to get x</u>

3x - 2 = 5x - 6

<u>Step 2:  Solve for x</u>

3x - 2 + 6 - 3x = 5x - 6 + 6 - 3x

4 / 2 = 2x / 2

2 = x

Answer:  x = 2

8 0
4 years ago
Read 2 more answers
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