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4 years ago

How do you solve this equation? 8x-y=16

Mathematics

2 answers:

mafiozo [28]4 years ago

8 0

8x - y = 16
8x = 16 + y
x = (16 + y)/8

ziro4ka [17]4 years ago

6 0

First, add y to both sides to get:
8x=y+16
Now subtract 16
y=8x-16

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Which expression could be substituted for y in the second equation to find the value of x?

EastWind [94]

value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Step-by-step explanation:

We need to find Which expression could be substituted for y in the second equation to find the value of x

The given equations are:

$2x-y=-10\,\,\,(1)2x - 3y= -1\,\,\,\,(2)$

For putting value of y in second equation, we will find from equation 1

From equation 1:

$2x-y=-10\\-y=-10-2x\\y=10+2x$

Putting value of y i.e y=10+2x in equation (2) to find value of x

$2x-3y=-1\\2x-3(10+2x)=-1\\2x-30-6x=-1\\-4x=-1+30\\-4x=29\\x=\frac{29}{-4}\\x=-\frac{29}{4}$

So, now finding value of y by putting value of x= -29/4 in eq(1)

$2x-y=-10\\2(-\frac{29}{4})-y=-10\\-\frac{29}{2}-y=-10\\-y=-10+\frac{29}{2}\\ -y=\frac{-20+29}{2}\\ -y=\frac{9}{2}\\ y=-\frac{9}{2}$

So, value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Keywords: System of equations

Learn more about System of equations at:

#learnwithBrainly

6 0

4 years ago

Find the slope of the line. m =

IRISSAK [1]

Answer: m=4

Step-by-step explanation:

To find the slope, we use the formula $m=\frac{y_{2} -y_{1} }{x_{2}-x_{1} }$ . We can use the two points to find the slope. The points on the graph are (-2,1) and (-3,-3).

$m=\frac{-3-1}{-3-(-2)} =\frac{-4}{-1} =4$

8 0

3 years ago

6x + 2y =8y help me pls

Karo-lina-s [1.5K]

Answer:

x=y

Step-by-step explanation:

because

6x=8y-2y

6x=8y

x=y

3 0

3 years ago

Read 2 more answers

Jesse wants to start driving himself to and from school each day. His parents want to know how much driving time would be involv

PSYCHO15rus [73]

Answer:

175 minutes

Step-by-step explanation:

Add up the 8 different times then divide by 4 to get the average driving time for 1 day:

⇒ 12 + 18 + 13 + 21 + 15 + 22 + 15 + 22 = 138

⇒ 138 ÷ 4 = 34.5 mins

Now multiply the average drive time for 1 day by 5 to determine the time taken to drive to and from school for 5 days:

⇒ 34.5 x 5 = 172.5 minutes

As 172.5 ≈ 175 minutes, the nest response is 175 minutes

5 0

2 years ago

Find the value of 15/4 divided by 5/8

dedylja [7]

Answer:

Step-by-step explanation:

15/4÷5/8

15/4×8/5

3 0

3 years ago

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