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Semmy [17]
3 years ago
7

Solve the following system using the elimination method. 3x+2y=1 2x-y=10

Mathematics
1 answer:
Nataliya [291]3 years ago
6 0

Answer:

Step 1 : Multiple both sides by 2

3x + 2y = 1

4x - 2y = 20

Step 2 : Eliminate 1 variable by adding the equations

7x = 21

Step 3 : Divide both sides by 7 to solve for x

x = 3

Step 4: Substitute the value of x into 3x + 2y = 1

3(3) + 2y = 1

Step 5: Solve for y

2y = 1 - 9

2y = -8

*divide by 2

y = - 4

Solution:

(x,y) = (3, -4)

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Please help me i do not understand explain how you answer the following questions.
dlinn [17]

For 6, you could divide 56 kilometers by 8 kilometers to get 7 kilometers. Multiply 7 by 5 to get 35. There would be 35 miles in 56 kilometers

7 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%20%5Cfrac%7B2%7D%7B15y%7D%20%20%2B%20%20%5Cfrac%7B3%7D%7B5y%20%7B%7D%5E%7B3%7D%20%7D" id="
Xelga [282]

Answer:

2y²   +   9

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

      15y³

Step-by-step explanation:

Start by identifying the LCD, and then change each fraction so that its denominator is the LCD.

Here the LCD is 15y³, which is evenly divisible by 15y and 5y³.

Focus now on the first fraction:  2 / (15y).  Multiplying numerator and denominator of this fraction by y² results in

y²·2          2y²

--------- → ----------

y²·15y       15y³           ←This is the correct LCD

Multiplying numerator and denominator of the second fraction by 3 results in:

   3·3            9

------------ → ---------

 3·5y³         15y³          ←This is the correct LCD

So now those two original terms look like:

 2y²         9

--------- + --------

 15y³       15y³

and this can be written in simpler form as:

2y²   +   9

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

      15y³

3 0
3 years ago
Plsss Help!! Will mark brainiest!! Due soon!!
Tom [10]

Answer:

(10, 8) is the distance.

Step-by-step explanation:

The x's are 10 points away from each other and y's are 8 points away from each other.

By the way, there is no second picture.

Sorry if I'm wrong. I might be more helpful if you upload the second picture.

7 0
2 years ago
Read 2 more answers
A right triangle has a hypotenuse of 70 feet and a leg of 35 feet. What is the length of the other leg? Select one:
saveliy_v [14]
H = 70ft.
P = 35ft.
B = ?

H^2 = P^2 + B^2
70×70 = (35×35) + B^2
B^2 = 4900-1225
B = √3675
B = 35√3 ft.
3 0
3 years ago
Israel planted 4 tomato seeds in his garden. Then he planted flower seeds in each of his three neighbor's gardens. Which express
Mice21 [21]

Answer:

4 + 3n

Step-by-step explanation:

Number of seed planed in his garden = 4

Let the Number of seed planted in each neighbor's garden = n

Number of neighbors he has = 3

The total number of seeds planted can be represented by the equation :

Number of seeds planted in his garden + (number of neighbors * number of seeds planted in each neighbors garden)

4 + 3n

7 0
3 years ago
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