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likoan [24]
3 years ago
15

Please help i have no idea what it means and the test is tomorrow.

Mathematics
1 answer:
Anarel [89]3 years ago
8 0

Answer:

H. 2

Step-by-step explanation:

√(1 − cos² x) / sin x + √(1 − sin² x) / cos x

Use Pythagorean identity.

sin² x + cos² x = 1

So:

1 − cos² x = sin² x

and

1 − sin² x = cos² x

Substitute:

√(sin² x) / sin x + √(cos² x) / cos x

sin x / sin x + cos x / cos x

1 + 1

2

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The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass
krok68 [10]
So, 0.5^5 is 0.03125
multiply that by 125 and get your answer.
*3.90625* (4)
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7 0
3 years ago
Whoever gets it right gets brainlyess answer and it's worth 10 points
defon
There are 8 yellow and 24 blue. Our ratio from yellow to blue is 8:24.
To simplify this, we need to see if we can divide 8 and 24 by a common factor.
8 and 24 can be divided by 8, so let's do that.
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6 0
3 years ago
Read 2 more answers
Graph -3x + 9y = -27​
Svetllana [295]

Answer:

Step-by-step explanation:

The first step you want to do is get one variable by itself. We are going to start by isolating y by itself.

-3x + 9y = -27

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3 years ago
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3 years ago
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muminat
Hello!

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I may be wrong let me know.
Hope this helps!
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3 years ago
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