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Lunna [17]
2 years ago
11

324.5 as scientific notation; step by step explanation please

Mathematics
2 answers:
dlinn [17]2 years ago
7 0

Answer:

3.456 x 10^11

Step-by-step explanation:

= 3.456 × 10¹¹

scientific notation

= 3.456e¹¹

scientific e notation

= 345.6 × 109

engineering notation

billion; prefix giga- (G)

= 3.456 × 10¹¹

standard form

= 345600000000

(real number)

prohojiy [21]2 years ago
4 0
<h3>Answer:   3.245 * 10^2</h3>

==============================================

Explanation:

Place the decimal point between the first two nonzero digits. So we'll place the decimal point between the 3 and 2 to get 3.245

Now ask yourself "how many spots to the right must I move the decimal point to get back to 324.5?" The answer is "2 spots to the right"

That "2" from "2 spots to the right" is the exponent over the 10.

So that's how we get to the answer 3.245 * 10^2

Using your calculator, you should find that 3.245 * 10^2 = 324.5

--------------

Side note: if the exponent over the 10 is negative, then the decimal point will move left that number of spaces.

For example, 3.2 * 10^(-2) = 0.032 showing it has moved 2 spaces to the left.

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We can solve this question in 2 ways: either using degrees or converting the degrees into radians.

Since, the question says degrees itself and there is no specification of using radians only, so I have solved it using degrees itself.

Part (a):

Perimeter of sector ORS = 2*Radius + Arc RS = 2*21 + 60*  \frac{ \pi }{180} *21 =  \frac{ \pi }{3} *21 = 7 \pi

Part (b):

Area of sector ORS = \frac{60}{360} * \pi * 21^{2} =  \frac{1}{6} * \pi *21*21=  \frac{147}{2} \pi

Area of sector POQ = \frac{36}{360} *  \pi * 14^{2} =  \frac{1}{10} *  \pi * 196 =  \frac{196}{10}  \pi

Thus, area of shaded region
= Area of sector ORS - Area of sector POQ

= \frac{147}{2} \pi - \frac{196}{10} \pi =  \frac{735 - 196}{10}  \pi =  \frac{539}{10}  \pi = 53.9 \pi

5 0
2 years ago
Write each polynomial in standard form. Then state the degree, the number of terms, and
salantis [7]
Standard form:
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8 0
2 years ago
Konrad raised $75.50 for his football team. He raised 151% of his fundraising goal how much more then his fundraising did Konrad
Colt1911 [192]

Answer:

He raised $25.50 over his fund raising goal

Step-by-step explanation:

Here, we want to calculate his fund raising goal.

Let his fund raising goal be $x

We are told that he raised 151% of his fundraising goal;

Thus,

mathematically;

151% of x = 75.5

151/100 * x = 75.5

151x = 100 * 75.5

151x = 7550

x = 7550/151

x = $50

So the amount he raised over his fund raising goal will be $75.50 - $50 = $25.50

8 0
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anyanavicka [17]

Answer:

The correct answer is D.

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Read 2 more answers
Help me with part e please.​
Andru [333]
I believe it would be 98
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2 years ago
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