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1 year ago

For a Brainlist !!!!!!!

Mathematics

1 answer:

UNO [17]1 year ago

6 0

y=-7x+2

m=-7, so that's a negative slope.

b=2, so the y-intercept is (0,2). That's a postiive y-intercept.

Solve 0=-7x+2 to find the x-intercept.

7x=2

x=2/7

The x-intercept is (2/7,0), so that's a positive x-intercept.

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Answer:

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2 years ago

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How can you find 10% of any number?

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A family has annual loan payments equal to 30% of their annual income. During the year, their loan payments total $15,680. What

soldier1979 [14.2K]

First, set up a ratio: $\frac{30}{100} = \frac{15,680}{x}$
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2 years ago

Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credi

zalisa [80]

Answer:

The circle is of radius $5$ and is centered at $(-1,\, -2)$ .

Step-by-step explanation:

Equation for a circle of radius $r$ ( $r > 0$ ) and center $(a,\, b)$ :

$(x - a)^{2} + (y - b)^{2} = r^2$ .

Expand and rearrange to obtain an equivalent equation:

$\left(x^2 - 2\, a\, x + a^{2}\right) + \left(y^2 - 2\, b\, y + b^2\right) = r^{2}$ .

$x^2+ (-2\, a)\, x + y^2 + (-2\, b)\, y = r^2 - (a^2 + b^2)$ .

Compare this equation with the equation of the circle in this question:

Coefficient of the $x$ term: $2$ in the original equation, $(-2\, a)$ in the proposed equation.
Coefficient of the $y$ term: $4$ in the original equation, $(-2\, b)$ in the proposed equation.
Constant term: $20$ in the original equation, $\left(r^2 - \left(a^2 + b^2 \right)\right)$ in the proposed equation.