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2 years ago

15

Numbers are (-20,10) and (40,-50)

1 answer:

seropon [69]2 years ago

6 0

Hdbanwlsksmaakdicjcjdndisisushshsudhehehhs

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Write the equation of a line that<br> goes through the point (-2, 3)<br> with a slope of 2.

bezimeni [28]

Answer:

y = 2x + 7

Step-by-step explanation:

y = mx + b The point (-2,3) gives us an x value and a y value that we can use. We are also give the slope (m). All we need to do is figure out the b (y-intercept) value.

y = mx + b

3 = 2(-2) + b

3 = -4 + b Add for to both sides

7 = b We know have every thing that we need to write the equation. We have the slope (m) which is 2 and the b (y-intercept) that we just figured out is 7

y = 2x + 7

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4 months ago

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Plz help me answer this

kow [346]

Answer:

140

Step-by-step explanation:

Solve 40% of 350.

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2 years ago

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Find the prime factorization on 168

Paha777 [63]

Answer:

The prime factors of 168 are 2, 3, and 7.

Step-by-step explanation:

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2 years ago

You are situated 300 feet from the base of Tower Glitz Plaza watching an external elevator descend down the side of the building

nordsb [41]

Answer:

18.66 ft/s

Step-by-step explanation:

The distance between you and the elevator is given by:

$h=\sqrt{x^2+y^2}$

The rate of change for the distance between you and the elevator is given by:

$\frac{dh}{dt}=\frac{dh}{dy}*\frac{dy}{dt}$

$-16=\frac{dh}{dy}*\frac{dy}{dt}$

$\frac{dh}{dy}=\frac{d}{dy} (\sqrt{x^2+y^2})\\$

Applying the chain rule:

$u=x^2+y^2\\\frac{dh}{dy}=\frac{d\sqrt u}{du} *\frac{du}{dy}\\\frac{dh}{dy}=\frac{1}{2\sqrt u} *2y\\\frac{dh}{dy}=\frac{y}{\sqrt {(x^2+y^2)}}$

Therefore, at x=300 and y = 500, dy/dt is:

$-16=\frac{y}{\sqrt {(x^2+y^2)}}*\frac{dy}{dt}\\-16=\frac{500}{\sqrt {(300^2+500^2)}}*\frac{dy}{dt}\\\frac{dy}{dt}=-18.66\ ft/s$

The elevator is descending at 18.66 ft/s.

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2 years ago

Help will give 25 brainlest points

Alekssandra [29.7K]

Step-by-step explanation:

The ratio of the two shorter legs of the top triangle is

$\dfrac{5}{4} = 1.25$

The bottom triangle has the following ratio:

$\dfrac{7.5}{6} = 1.25$

Since their ratios are the same, this means that the two triangles are similar.

6 0

2 years ago