What is an equation of the line that passes through the point (3.-1) and has a slope of 2?

Mathematics

1 answer:

Igoryamba3 years ago

3 0

Answer:

y = 2x - 7

Step-by-step explanation:

Use desmos easy and you understand how graphs work

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Which quadratic equation has the roots -1+4i and -1-4i

AysviL [449]

Answer:

Step-by-step explanation:

Solve the quadratic in answer choice C using the quadratic formula:

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}$ .

Here a=1, b=2, and c=17.

Substitute and you'll have:

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a} =\frac{-2+/-\sqrt{(-2)^2-4(1)(17)} }{2(1)}=\frac{-2+/-\sqrt{4-68}}{2)}$

$\frac{-2+/-\sqrt{-64} }{2}=\frac{-2+/-8i }{2}=-1+/- 4i$

6 0

4 years ago

HELP!!!! if you answer you get 20 points.

wolverine [178]

Answer:

Very last choice is the answer.

Step-by-step explanation:

Remark

The thing that is most important is that the horizontal line connect h and the radius is parallel to the cut of the sphere if it was placed right in the middle. That line swings around as though the center was a pivot.

Solution

So what you have is a circle when that line goes around that part of the sphere.
To find the length of that line, use the Pythagorean Theorem. Call the line r1.
r1 ^2 = r^2 - h^2
So the area is pi * r1^2
Area = pi (r^2 - h^2)
The very last one is the answer.

8 0

3 years ago

Which situation is best represented by the following equation?

liq [111]

Answer:

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers

-2c-5c+8-4=53 I need answers to this asap I believe it’s -7

Elena-2011 [213]

Answer: