All categories

2 years ago

Solve by using any method of substitution4 +8x = y 6x - y = 2

Mathematics

1 answer:

Bumek [7]2 years ago

8 0

Answer:

(-3,-20)

Step-by-step explanation:

4 +8x = y ...... equation (1)

6x - y = 2 ........equation(2)

from equation 2

6x - y = 2

6x -(4+8x) =2

6x - 4 + 8x = 2

+4 +4

6x - 8x = 6

-2x=6

divide by -2

x= -3

put x in equation (1) to solve for y

4 + 8x = y

4+8(-3)=y

4-24=y

-20=y

y= -20

solution = (-3,-20)

You might be interested in

I need the percentage of the shaded area.

arsen [322]

Answer:

1.22

Step-by-step explanation:

Since there is one whole shaded. And 2 tens, and 2 ones. Its 1.22.

3 0

2 years ago

At what points will Al be producing the most equal amounts of sandwiches and salads?

Neporo4naja [7]

Answer: D, Y, X

<u>Step-by-step explanation:</u>

The (salad, sandwich) coordinates are as follows:

A: (0, 10)

B: (1, 8)

C: (2, 6)

D: (3, 4) MOST EQUAL AMOUNTS

E: (4, 2)

F: (5, 0)

X: (4, 8) OUTSIDE OF THE PRODUCTION LINE

Y: (1, 3) UNDER THE PRODUCTION LINE

8 0

2 years ago

Read 2 more answers

At the class barbecue, 25 students attended. Of those students, 15 said they wanted hamburgers. What percent wanted hamburgers?

Rom4ik [11]

Answer:

60% of the students wanted hamburgers

Step-by-step explanation:

just multiply

5 0

2 years ago

Read 2 more answers

Write the equation of the sphere in standard form. x^2 + y^2 + z^2 + 2x − 4y − 6z = 22

madam [21]

The equation $x^{2} +y^{2} +z^{2} +2x-4y-6z=22$ in standard form looks like $(x+1)^{2} +(y-2)^{2} +(z-3)^{2} =(6)^{2}$ .

Given equation of sphere be $x^{2} +y^{2} +z^{2} +2x-4y-6z=22$ .

We are required to express the given equation in the standard form of the equation of sphere.

Equation is basically relationship between two or more variables that are expressed in equal to form. Equation of two variables look like ax+by=c. It may be linear equation,quadratic equation, cubic equation or many more depending on the powers of variables. The standard form of the equation of sphere looks like $x^{2} +y^{2} +z^{2} =r^{2}$ .