2 years ago

Is this a function?

Mathematics

1 answer:

Brums [2.3K]2 years ago

6 0

Answer:

Yes

Step-by-step explanation:

It is a function since each x-coordinate is used only once. No two x-coordinates are equal. That makes it a function.

Answer: Yes

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A jacket at the store is being offered at a 30% discount. If the original price of the jacket is x, which answer choice shows an

kifflom [539]

Answer:

x-.30(x)

Step-by-step explanation:

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3 years ago

Emily is 2 years older than Alysson. The product of their age is 440. How old are they?

Nuetrik [128]

Call Emily's age is x, we have:
x * (x - 2) = 440
So x = 22
So Emily's 22 years old, Alysson's 20 years old.\\
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3 years ago

How can csc^2-cot^2 = 1?

Softa [21]

ANSWER

By simplifying the left hand side using the Pythagorean Identity.

EXPLANATION

The given identity is

$\csc^{2} (x) - \cot^{2} (x) = 1$

Take the left hand side and simplify to get the right hand side.

$\csc^{2} (x) - \cot^{2} (x) = \frac{1}{\sin^{2} (x)} - \frac{ \cos^{2} (x)}{\sin^{2} (x)}$

Collect LCM for the denominators.

$\csc^{2} (x) - \cot^{2} (x) = \frac{1 - \cos^{2} (x)}{\sin^{2} (x)}$

Recall the Pythagorean Identity.

$\cos^{2} (x) + \sin^{2} (x) = 1$

This implies that:

$1 - \cos^{2} (x) = \sin^{2} (x)$

We substitute this to get,

$\csc^{2} (x) - \cot^{2} (x) = \frac{\sin^{2} (x)}{\sin^{2} (x)}$

$\csc^{2} (x) - \cot^{2} (x) = 1$

6 0

3 years ago

.I want a way to solve this question

Verdich [7]

Check the picture below.

so then γ ≈ 180 - 69 - 43, γ ≈ 68.

8 0

3 years ago

Who knows this? Help me please

Temka [501]

Answer:

1/8

Step-by-step explanation:

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3 years ago