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3 years ago

What is the domain of f(x)=cos(x)

Mathematics

1 answer:

hammer [34]3 years ago

6 0

The domain of f(x) = cos(x) is ( - infinity , infinity) or all real numbers

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2 years ago

Segments AB, DC and Ec intersect at point C. Angel DCE measures 148. Find the value of x.

Anna71 [15]

The image is attached.

Answer:

x = 16°

Step-by-step explanation:

Segment AB, segment DC and segment EC all intersect at point C.

Here, we are told angle DCE measures 148°.

This is a semi-circle, and the total angle of a semi-circle is 180°.

Which means, x+x+148 = 180

Solving for x, we have:

x+x+148 = 180

2x + 148 = 180

2x = 180 - 148

2x = 32

$x = \frac{32}{2}$

x = 16°

The value of x is 16°

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3 years ago

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Aleks [24]

Answer:

A. 576 in (1728/3)

B. 1152^2 in (576x2)

C. 6912^2 in (1152x6)

D. 576^2 ft (6912/12)

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3 years ago

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artcher [175]

The answer is A because the square root function needs to be greater than or equal to zero bc the circle is filled and you can’t have a negative radical. It’s also choice A because the -1 is outside of the radical which means it’s being translated downwards from the parent function. Hope that helps ;-;

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2 years ago

What is 5r^2 = 80 It says solve each equation with the quadratic formula.

katovenus [111]

$5r^2 = 80 \ \ /:5\\ \\r^2=\frac{80}{5}\\ \\r^2=16\\ \\r^2-16=0\\ \\ r^2 - 4^2 =0 \\ \\(r-4)(r+4)=0$

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3 years ago