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Ainat [17]
4 years ago
15

What is a chemical change also known as?

Mathematics
2 answers:
stira [4]4 years ago
6 0
The answer is a chemical reaction
Sindrei [870]4 years ago
5 0
It is known as chemical change
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Prove identity trigonometric equation
irina [24]

Explanation:

The given equation is False, so cannot be proven to be true.

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Perhaps you want to prove ...

  2\tan{x}=\dfrac{\cos{x}}{\csc{(x)}-1}+\dfrac{\cos{x}}{\csc{(x)}+1}

This is one way to show it:

  2\tan{x}=\cos{(x)}\dfrac{(\csc{(x)}+1)+(\csc{(x)}-1)}{(\csc{(x)}-1)(\csc{(x)}+1)}\\\\=\cos{(x)}\dfrac{2\csc{(x)}}{\csc{(x)}^2-1}=2\cos{(x)}\dfrac{\csc{x}}{\cot{(x)}^2}=2\dfrac{\cos{(x)}\sin{(x)}^2}{\cos{(x)}^2\sin{(x)}}\\\\=2\dfrac{\sin{x}}{\cos{x}}\\\\2\tan{x}=2\tan{x}\qquad\text{QED}

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We have used the identities ...

  csc = 1/sin

  cot = cos/sin

  csc^2 -1 = cot^2

  tan = sin/cos

4 0
3 years ago
Help please and as soon as possible and thanks
Annette [7]
This is 10.5^2 10.5 is the base and 2 is the exponent. The area is 110.25 square inches.
7 0
4 years ago
Evaluate a^7 - 4b for a =3 and b= -1
Papessa [141]

Answer:

2187+4

= 2191

Step-by-step explanation:

plz brainliest :)

3 0
3 years ago
Read 2 more answers
True or false y4 equals 16 if y is 2.
enyata [817]
False, y4 would equal 8 if y=2
8 0
3 years ago
Read 2 more answers
Pleaseee someone help me :( Ive been stuck on this for an hour
Whitepunk [10]

Answer:

The number of times organism B's population is larger than organism A's population after 8 days is 32 times

Step-by-step explanation:

The population of organism A doubles every day, geometrically as follows

a, a·r, a·r²

Where;

r = 2

The population after 5 days, is therefore;

Pₐ₅ = = 32·a

The virus cuts the population in half for three days as follows;

The first of ta·2⁵ he three days = 32/2 = 16·a

The second of the three days = 16/2 = 8·a

After the third day, Pₐ = 8/2 = 8·a

The population growth of organism B is the same as the initial growth of organism A, therefore, the population, P₈ of organism B after 8 days is given as follows;

P₈ =  a·2⁸ = 256·a

Therefore, the number of times organism B's population is larger than organism A's population after 8 days is P₈/Pₐ = 256·a/8·a = 32 times

Which gives, the number of times organism B's population is larger than organism A's population after 8 days is 32 times.

Hope this helps you out! :)

Also, it's OK! This was actually pretty hard to figure out!

6 0
4 years ago
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