10x - 6y = 16

5x - 3y = 8



She multiplies the second equation by 2, then subtracts the resulting equation from the first. To her surprise, she gets the equation 0 = 0.



What is special about this system of equations? Why does she get this result and what does it mean about the solutions?

Answer:

The answer is B

Step-by-step explanation:

Answer:

x2  y-32

Step-by-step explanation:

Answer:

[tex]y=224-16x[/tex]

Step-by-step explanation:

Stare at the table for a bit. if you look at the y you can tell that the difference between two rows is the same, and it's equal to 32: every time x increases by 2, y decreases by 32; it means that if x increased by 1, y would decrease by 16. At this point we can write the equation as [tex]y=q-16x[/tex] To find q there are 2 ways: one is to plug the value from any line in place of y and x, or, more elegant, is to backtrack the table: if y goes down by 32 when x raises by 2, it emans that if x decreases by 2, y will go up by 32. And 192+32 is 224, our q value.

Answer:

1 Donut: $1.29

1 Hot Chocolate: $2.79

Subtotal: $4.08

Discount: $0.61

New Subtotal: $3.47

Tax: $0.28

Total: $3.75

Step-by-step explanation:

Here ya go! Sorry it took so long.

Answer:

F(2)=8 and G(2)=4

Step-by-step explanation:

==================================

Explanation:

We can think of lines L and M as sort of train tracks. Inside the train tracks we have the interior angles of: 3, 4, 5, 6

Angles 3 and 6 are one pair of alternate interior angles. They are on alternate sides of the transversal line N.

The other pair of alternate interior angles are 4 and 5

Alternate interior angles are only congruent when L and M are parallel.

Answer:

Angle 4

Step-by-step explanation:

I believe it's on the opposite side of the transversal so yee

Answer:

[tex]66 \: ft/sec[/tex]

Step-by-step explanation:

[tex] = \frac{45 \: mi}{hr} \times \frac{5280 \: ft}{1 \: mi} \times \frac{1 \: hr}{3600 \: s} [/tex]

[tex] = 45 \frac{5280}{1} \times \frac{1}{3600}ft/sec \\ [/tex]

[tex] =66 \: ft/sec[/tex]

Yeah Bro ! I'm here ,

.Given that ;-

slope ( m) = 3/2

y-intercept (c) = -3

Now ,

we know the equation of straight line in slope intercept form;

I.e

y = mx+c

Just substitute m and c 's value , we get

y= (3/2)x +( -3)

or,. y = 3x/2 - 3

[tex]y = \frac{3x}{2} - 3 \\ y = \frac{3x - 6}{2} \\ 2y = 3x - 6 \\ 3x - 2y = 6\\ [/tex]

,

Hence 3x-2y = .6

3x-2y-6 =0 is the required equation.

Answer:

x-axis = (18, 0)

y-axis = (0, 12)

Quadrant I = (4.5, 10.6)

Quadrant II = (-15, 21)

Quadrant III = (-3/4, -4 1/9)

Quadrant IV = (3, -7)

Step-by-step explanation:

Hope this is helpful.

Answer:

(f+g)(x)=2x+1+5 - x

(f+g)(x)=x + 6

(f - g)(x)= 2x + 1 - (5- x )

(f - g)(x)= 3x - 4

Answer:

Slope: -5

Slope: 0 (undefined)

Step-by-step explanation:

(-10-5)/(6-3) = - 15 / 3 = -5

(10- - 4)/(2-2) = 14/0

Answer:

Refer to the graph. This might help you

Answer:

1/3

Step-by-step explanation:

y=mx+b

m is the slope

b is the y intercept

y=1/3x+4

1/3 = slope

4 = y intercept

Making the answer 1/3.

Answer:

50% decrease

Step-by-step explanation:

it would be a 50% decrease because half of 8 is 4 and 1/2 is 50 %.

Answer:

[tex] x= 23.4[/tex]

Step-by-step explanation:

In a right triangle the tangent of an angle is the ratio of the opposite length over the adjacent*. In formulas, [tex]tan 54° = x/17[/tex] Solving for x, using a calculator for the tangent, [tex] x= 23.4[/tex]

*I promise I didn't just spellcheck that.

Answer:

X=5

Step-by-step explanation:

You want to factor the left side of the equation

(X-5)(x-5)=0

Set factors that will equal to 0

X-5=0

X=5 is the answer

Answer:

Step-by-step explanation:

Find the area of the shaded region in terms of r.

1. The area of the circle with radius r is

2. The area of the square with diagonal 2r is

3. The area of the shaded region is the difference

Since the area of the shaded region must be greater or equal to  then

This inequality is solved only in positive numbers, because r cannot be negative.

Answer:

y = [tex]\frac{x^{2} + 27}{8}[/tex]

Step-by-step explanation:

To find the inverse, we will set it equal to y, switch the x and y values, then solve for y.

[Given] h(x)=3 square root x -3

[Rewrite] y = 3 [tex]\sqrt{x-3}[/tex]

[Switch values] x = 3 [tex]\sqrt{y-3}[/tex]

[Square both sides] x² = 9(y - 3)

[Distrubte] x² = 8y - 27

[Add 27 to both sides & flip equation] 8y =  x² + 27

[Divide both sides of 8] y = [tex]\frac{x^{2} + 27}{8}[/tex]

Have a nice day!

  I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

1/2 + 3/4 = 3/4 ........... false, so we do not add anything

5/8 - 1/4 = 3/8 ............ true, so we have  (10 * 3/8) = 15/4

4/5 + 7/10 = 1 1/2 ....... true, so we have  (10 * 1 1/2) = 15

2 1/2 - 1 5/6 = 1/6 ...... false, so we do not add anything.

we are then left with 15/4 and 15, on adding all together, we have

100 + 15/4 + 15 = 118.75

for more on simple additions, see https://brainly.com/question/4933260

Answer: A 45-degree angle is exactly half of a 90-degree angle formed between two rays. It is an acute angle and two angles measuring 45 degrees from a right angle or a 90-degree angle. We know that an angle is formed when two rays meet at a vertex.

Answer:

-5/6a - 5/8

Step-by-step explanation:

i took the k12 quiz

Answer:

unknown number=-6

Step-by-step explanation:

Let x be the unknown number.

7x+24=-18

      7x=-18-24

          =-42

        x=-42÷7

          =-6

Hence, unknown number=-6.

Answer:

Step-by-step explanation:

10n + 27 >= -18

Answer:

No its not

Step-by-step explanation:

-6 is greater then -8 and in this case it’s not less then -8

Answer: 1squared

Step-by-step explanation:

Answer:

b. 2

c. 4

Step-by-step explanation:

The degree of the polynomial is highest power in the polynomial.

Answer:

Okay so you jsut gotta divide

5/2 is basically saying 5 divided by 2, the bar basically means divide by.

Now 5/2 is 2.5

2.5 into a mixes is 2 1/2

Answer:

The common denominater for this is 15

Step-by-step explanation:

Answer:

Step-by-step explanation:

in which way do you want it factorized?

Answer:

The length is 15.71 feet.

Step-by-step explanation:

Answer:

number 2 is right

Step-by-step explanation:

the second one