3 years ago

An equation of a line with a slope of -2 and a y-intercept of 2.5 is

Mathematics

1 answer:

Masja [62]3 years ago

8 0

Answer:

its D

Step-by-step explanation:

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Burka [1]

Answer:

The radius is r = 3 in,
The height is h = 4 in

The area of the base:

A(b) = πr² = π(3²) = 9π in²

The circumference of the base:

C = 2πr = 2π(3) = 6π in

The area of the lateral surface:

A(l) = Ch = 6π(4) = 24π in²

The surface area:

S = 2A(b) + A(l) = 2*9π + 24π = 42π in²

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3 years ago

What is the slope of the line x=-3

mote1985 [20]

x = 3 is a vertical line that goes straight up and down at 3 on the x axis, vertical lines have a undefined slope. Don't confuse that with no slope which is a flat like like y=7.

so the slope is undefined

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lakkis [162]

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valina [46]

Answer:

A.3

Step-by-step explanation:

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3 years ago

Find the distance (-4,5) and (7,18)

seropon [69]

Answer:

$\sqrt{290}\ units$

Step-by-step explanation:

The distance between points $(x_1,y_1)$ and $(x_2,y_2)$ is

$\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$

Hence, the distance between points $(-4,5)$ and $(7,18)$ is

$\sqrt{(-4-7)^2+(5-18)^2}\\ \\=\sqrt{(-11)^2+(-13)^2}\\ \\=\sqrt{121+169}\\ \\=\sqrt{290}\ units$

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