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2 years ago

93 billion in scientific notation

Mathematics

2 answers:

Firdavs [7]2 years ago

5 0

93 billion in scientific notation: <span>9.3x10^10
Have a great day! :D</span>

Stolb23 [73]2 years ago

4 0

9.3 x 10 to the power of 10

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DanielleElmas [232]

Answer:

Step-by-step explanation:

First, convert all the secants and cosecants to cosine and sine, respectively. Recall that $csc(x)=1/sin(x)$ and $sec(x)=1/cos(x)$ .

Thus:

$\frac{sec(x)}{cos(x)} -\frac{sin(x)}{csc(x)cos^2(x)}$

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

Let's do the first part first: (Recall how to divide fractions)

$\frac{\frac{1}{cos(x)} }{cos(x)}=\frac{1}{cos(x)} \cdot \frac{1}{cos(x)}=\frac{1}{cos^2(x)}$

For the second term:

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

So, all together: (same denominator; combine terms)

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

Note the numerator; it can be derived from the Pythagorean Identity:

$sin^2(x)+cos^2(x)=1; cos^2(x)=1-sin^2(x)$

Thus, we can substitute the numerator:

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

Everything simplifies to 1.

7 0

2 years ago

How do you simplify each expression 3-5w+12+2w-3

Wittaler [7]

3-5w+12+2w-3
(3+12-3)=12
(-5w+2w)=-3w
-3w+12

5 0

2 years ago

Name the property of multiplication illustrated<br><br> 112 X 1 = 112

Nat2105 [25]

Answer:

Identity property

Step-by-step explanation: because the product of any number and one is that number

4 0

2 years ago

What are these < > =???????????

madam [21]

These Are Less Than(<) and Greater Than(>) Symbols!!

Hope This Helps!!!

7 0

3 years ago

Read 2 more answers

What is 5,339x6 equal to in this case

BigorU [14]

32034

All I had to do was multiply. Is there more to the problem?

8 0

3 years ago