3 years ago

What is the solution of 3x+2y=22 , 3x-2y=2

2 answers:

5 0

3x+2y=22
3x-2y=2
we add these to equations together
6x=24
x=4
then we plug in x to find y
3*4+2y=22
12+2y=22
2y=10
y=5
solution is (4,5) (x=4 and y=5)

Setler [38]3 years ago

3 0

It is 6x+4y=20...I THINK!!!
hope i helped

You might be interested in

Not graded help please

marusya05 [52]

Y=m+6 should be the correct answer

4 0

2 years ago

William sunk 25% of the shots he made on the basket. If he threw 80 shots, how many did he miss?

Umnica [9.8K]

Answer:

Step-by-step explanation:

He missed 20 shots

Write 25% as 25100.

25100 of 80 = 25100 × 80.

Therefore, the answer is 20.

4 0

2 years ago

Read 2 more answers

(question in the picture! A. 72° B.18° C.45° D.108° (please do hurry, thank you!)

aliya0001 [1]

Answer is x = 72

hope that helps

4 0

3 years ago

Read 2 more answers

What is the average of -30 -15 -20 55

defon

Answer:

-2.5

Step-by-step explanation:

-30 + (-15) + (-20) + 55 = -10. Then you divide it by how many numbers there are (4). Which equals - 2.5. If this is wrong, then round up to -3.

8 0

2 years ago

Read 2 more answers

7x + 8y = 25 9x + 10y =35 elimination method please

djverab [1.8K]

$7x +8y = 25 ~~~....(i)\\\\9x +10y = 35~~~ ....(ii)\\\\\text{Multiply equation (ii) by}~ \dfrac 79 ~ \text{and do (ii) - (i):}\\\\\dfrac 79 (9x +10y) - (7x +8y) = \dfrac 79 (35) - 25\\\\\\\implies 7x +\dfrac{70y}9 - 7x -8y = \dfrac{245}9 -25\\\\\\\implies - \dfrac{2y}9 = \dfrac{20}9\\\\\\\implies -2y =20\\\\\implies y =-10\\\\\text{Substitute}~ y = -10~ \text{in equation (i):}\\\\\\7x +8(-10) = 25\\\\\implies 7x = 25 +80\\\\\implies 7x = 105 \\\\\implies x =15\\\\$

$\\\text{Hence}~ (x,y) = (15,-10)$

3 0

2 years ago