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3 years ago

Find x and y in the system of equations:

Mathematics

2 answers:

NemiM [27]3 years ago

7 0

Answer:

Y= -8

X= 3

Step-by-step explanation:

apply -(-a)=a rule

-23+4*8/3

-23+4*8=9

9/3

2y-(3)=-19

y= -8

dedylja [7]3 years ago

7 0

Answer:

x = 3

y = -8

Step-by-step explanation:

We have two simultaneous equations:

3x + 4y = -23

2y - x = -19

Solve for y in the second equation.

2y = -19 + x

y = -19/2 + 1/2x

Put y as -19/2 + 1/2x in the first equation and solve for x.

3x + 4(-19/2 + 1/2x) = -23

3x + 2x - 38 = -23

5x - 38 = -23

5x = -23 + 38

5x = 15

x = 15/5

x = 3

Put x as 3 in the second equation and solve for y.

2y - 3 = -19

2y = -19 + 3

2y = -16

y = -16/2

y = -8

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3 years ago

There are six balls in the bag. Two are basketballs, three are playground balls, and one is a soccer ball. What is the probabili

aleksandr82 [10.1K]

Answer:

$\frac{1}{6}=0.16$

Step-by-step explanation:

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3 years ago

How to solve n-5*2/3=3/4

Scorpion4ik [409]

$n-5\cdot\dfrac{2}{3}=\dfrac{3}{4}\\\\n-\dfrac{10}{3}=\dfrac{3}{4}\ \ \ \ |\cdot12\\\\12n-12\cdot\dfrac{10}{3}=12\cdot\dfrac{3}{4}\\\\12n-4\cdot10=3\cdot3\\\\12n-40=9\ \ \ \ |+40\\\\12n=49\ \ \ \ \ |:12\\\\n=\dfrac{49}{12}$