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3 years ago

Explain how to find the x-intercept of the graph of y=-8x-12.

1 answer:

8 0

The x-intercept is when y=0, so we plug that in our equation,
$0=-8x-12$ . +12 on both sides to get $12=-8x$ . Divide by -8 to get $x=-1.5$

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Ruby conducted a survey and found the 5/6 of her classmates have a pet and 2/3 of those pets are dogs.what fraction of her class

Pie

To determine the fraction of her classmates with dogs as pets, we simply multiply the two given fractions based from the survey.

Pets = (2/3)(5/6) = 5/9

Thus, there are 5/9 of Ruby;s car.

5 0

3 years ago

Find the center, vertices, and foci for the ellipse 25x^2 + 64y^2 = 1600

Alisiya [41]

Answer:

The answer to your question is below

Step-by-step explanation:

Data

Equation 25x² + 64y² = 1600

Process

1.- Divide all the equation by 1600

25x²/1600 + 64y²/ 1600 = 1600/1600

-Simplify

x²/64 + y²/ 25 = 1

2.- Equation of a horizontal ellipse

$\frac{x^{2} }{a^{2}} + \frac{y^{2}}{b^{2}} = 1$

3.- Find a, b and c

a² = 64 a = 8

b² = 25 b = 5

-Calculate c with the Pythagorean theorem

a² = b² + c²

-Solve for c

c² = a² - b²

-Substitution

c² = 8² - 5²

-Simplification

c² = 64 - 25

c² = 39

-Result

c = √13

4.- Find the center

C = (0, 0)

5.- Find the vertices

V1 = (-8, 0) V2 = (8, 0)

6.- Find the foci

F1 = (-√13, 0) F2 = (√13, 0)

7 0

2 years ago

Can you help me find the slope for #2

Flauer [41]

-3
because it goes left 1 up3
3/-1 = -3 as the slope

8 0

3 years ago

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The output is the cube of the input

Murrr4er [49]

<span>1.)the output is half of the input.
2.)the output is one more than twice the input.
3.)the output is the cube if the input.
4.)the output is six times the input.</span>

6 0

3 years ago

HELP ME PLS<br> Which of these figures has rotational symmetry?

Vlada [557]

Answer:

Step-by-step explanation:

When you rotate the shape it will be the same as it was before .

3 0

3 years ago

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