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3 years ago

PLS HELP!

Mathematics

2 answers:

Elina [12.6K]3 years ago

7 0

It’s only vertical angles because they’re angles opposite of each other, and they’re congruent.

Aleks04 [339]3 years ago

3 0

The answer is an acute

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-7b< -35<br> =less than or equal two

timama [110]

Answer:

b>5

=greater than or equal too

Step-by-step explanation:

divide -35 by -5, and since you are dividing by a negative, the sign flips

6 0

3 years ago

In a survey of 200 employees, 65% agreed that the management of the cafeteria should be changed. If the confidence interval is 9

Kruka [31]

Answer:

c.136

Step-by-step explanation:

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3 years ago

The area of a square is given by x?, where x is the length

Rudik [331]

Answer:

Step-by-step explanation:

If she doubles the area of her lot, it should be 2x^2.

But how do you get that?

The answer is that the sides have now increased to √2x

How did I get that, and why did I choose it?

The formula for a square's area is s^2
If you want to double the area, it will be 2 s^2. Now what?
Take the square root of 2s^2 which is √(2s^2).
What that means is the side is now √2 s

6 0

3 years ago

What are the zeros for the function <br><br>f(x) = (x + 7)(x + 5)

Svetllana [295]

Answer:

(-7,0) and (-5,0)

Step-by-step explanation

1. 0= (x + 7)

-7 -7

-7=x

(-7,0)

2. 0= (x + 5)

-5 -5

-5=x

(-5,0)

6 0

3 years ago

Is the function even or odd?

sweet [91]

Answer:

$f(\theta)=\cos(\theta)$ is an even function.

Step-by-step explanation:

Recall when it means when a function is even or odd. An even function has the following property:

$f(-x)=f(x)$

And an odd function has the following property:

$f(-x)=-f(x)$

So, let's test some values for cos(x).

Let's use π/3:

$f(\pi/3)=\cos(\pi/3)$

From the unit circle, was can see that this is 1/2 (refer to the x-coordinate).

Now, let's find -π/3. This is the same as 5π/3. Thus:

$f(-\pi/3)=\cos(-\pi/3)$

And again from the unit circle, we can see that this is 1/2.

Therefore, despite the negative, the function outputs the same value.

Cosine is an even function.

Notes:

Cosine is an even function and sine is an odd function. It's helpful to remember these as they can help you solve some trig problems!

6 0

3 years ago