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3 years ago

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PLEASE HELP ME WITH MY MATH WARM UP I HAVE A 71 AND IM ABOUT TO FAIL

1 answer:

anastassius [24]3 years ago

4 0

Answer:

Step-by-step explanation:

hi

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What is the general form of the equation of a circle with its center at (-2,1) and passing though (-4,1) ?

julsineya [31]

Equation is :( x + 2 )² + ( y - 1 )² = r²( - 4 + 2 )² + ( 1 - 1 )² = r²4 = r², than we will plug in to a formula:( x + 2 )² + ( y - 1 )² = 4x² + 4 x + 4 + y² - 2 y +1 = 4x² + y² + 4 x - 2 y + 1 = 0
the answer is : <span>x2 + y2 + 4x − 2y + 1 = 0 </span>

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3 years ago

All perfect numbers from 20 to 30

lana [24]

Answer:

There is only one perfect number between 20 to 30 which is 28.

<h3>Explanation:</h3>

The number 28 is a perfect number because its factors are 1, 2, 4, 7, 14 and 28.

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2 years ago

Identify coordinate point A. <br><br> (0, 2)<br> (6, 7) <br> (1, 5)<br> (7, 3)

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2 years ago

Read 2 more answers

Help question attached multiple choice

Rina8888 [55]

ANSWER

$x = \frac{\pi}{2} , \frac{7\pi}{6} , \frac{3\pi}{2} , \frac{11\pi}{6}$

EXPLANATION

The given trigonometric equation is

$\cos(x) + 2 \cos(x) \sin(x) = 0$

We factor cos(x) to get:

$\cos(x) (1 + 2 \sin(x) ) = 0$

Apply the zero product property to obtain:

$\cos(x) = 0 \: or \: 1 + 2 \sin(x) = 0$

$\cos(x) = 0 \: or \: \sin(x) = - \frac{1}{2}$

Using the unit circle,

$\cos(x) = 0$

when

$x = \frac{\pi}{2}$

and

$x = \frac{3\pi}{2}$

We know

$\sin(y) = \frac{1}{2}$

when

$y= \frac{\pi}{6}$

The sine function is negative in the third and fourth quadrants.

$x = \pi + \frac{\pi}{6} = \frac{7\pi}{6}$

$x = 2\pi - \frac{\pi}{6} = \frac{11\pi}{6}$

Hence the solutions are:

$x = \frac{\pi}{2} , \frac{7\pi}{6} , \frac{3\pi}{2} , \frac{11\pi}{6}$

6 0

3 years ago

Find the area of the circle when the circumference is 26 in

andrew11 [14]

Answer:

"None of the answers are correct."

Step-by-step explanation:

The formula for Area given the circumference is A = $\frac{C^{2} }{4\pi }$

$\frac{26^{2} }{4\pi } = 53.79437$

So none of the above are correct

3 0

3 years ago