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3 years ago

2x + 2y = -2 3x - 2y = 12 Answer:

Mathematics

1 answer:

yarga [219]3 years ago

6 0

Answer:

(2,-3)

Step-by-step explanation:

2x + 2y = -2

3x - 2y = 12

Add the two equations to eliminate y

2x + 2y = -2

3x - 2y = 12

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

5x = 10

5x/5 = 10/5

x = 2

Now find y

2x+2y = -2

2(2)+2y = -2

4+2y = -2

Subtract 4 from each side

4-4 +2y = -2-4

2y = -6

Divide by 2

2y/2 = -6/2

y = -3

(2,-3)

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Is the function y = -x5 - 5 linear or nonlinear?

8090 [49]

This function is Nonlinear

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3 years ago

Please show me how you did it?

omeli [17]

Hello there!

Speed has the following formula:
S = $\frac{D}{T}$ , or Speed is equivalent to Distance divided by Time.

Let's check out our problems to solve for the speed.

16.)
We have 770 miles, which is a measure of distance.
We have 120 minutes, which is a measure of time.

Let's substitute our variables with these numbers.

S = $\frac{770}{120}$
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S = ~6.41 Mi/min

17.)
We have 2.5 mi, which is our measurement of distance.
We have 0.5 h, which is our measurement of time.

S = $\frac{2.5}{0.5}$
Simplify.
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18.)
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I hope this helps!

5 0

4 years ago

Find the center and radius of the circle with this equation:<br> x² + 16x + 64 + y² - 2y + 1 = 144

nydimaria [60]

By completing squares, we will see that the radius is 12 units and the center is (-8, 1).

<h3>How to find the center and radius of the circle?</h3>

The circle of center (x₁, y₁) and radius r is written as:

(x - x₁)² + (y - y₁)² = r²

Now we go to our equation:

x² + 16x + 64 + y² - 2y + 1 = 144

Now we need to complete squares:

(a + b)² = a² + 2ab + b²

Then we can rewrite:

(x² + 2*8*x + 8*8) + (y² - 2y + 1) = 12²

(x + 8)² + (y - 1)² = 12²

So the center is the point (-8, 1) and the radius is 12 units.

If you want to learn about circles:

brainly.com/question/1559324

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8 0

2 years ago

A rectangular field is 90 yards long and 60 yards wide.Give the length and width of another rectangular field that has the same

Ilya [14]

Answer:

The length and width of another rectangular field with same perimeter but a larger area is 80 m by 70 m

Step-by-step explanation:

The perimeter of the existing field is

2(l + b)

= 2(90 + 60) = 2(150) = 300 yards

So we want another field having the same perimeter but a larger area

The area we have here is 90 * 60 = 5,400 square yards

If we had 80 by 70

Perimeter will still be 2(70 + 80) = 150

But the area will be 80 * 70 = 5,600 square yards

3 0

3 years ago

Evaluate <br><br>-6-1 (-1)

VLD [36.1K]

Answer:

-5

Step-by-step explanation:

-6 - 1(-1) involves multiplication as well as addition/subtraction. Order of operations rules require that we multiply before adding or subtracting, and so we have

-6 - 1(-1) = -6 + 1, which comes out to -5.

8 0

4 years ago