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KonstantinChe [14]
3 years ago
7

I need help with this question

Mathematics
1 answer:
Bezzdna [24]3 years ago
3 0

Answer:

It is all determined by how many spaces and which way the decimal point moves.

Step-by-step explanation:

So here are two examples

<em>Example 1:</em>

500000.00

To write this in scientific notation you would move the decimal place to the left.

You would move it 5 digits to the left so the exponent of 10 would be 5

5 * 10^{5}

<em>Example 2</em>

0.0000042

Here to write this in scientific notation you move the decimal place to the right.

You would move it 6 digits to the right so the exponent would be -6

4.2 * 10^{-6}

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A sound wave is traveling at 6,420m/s and has a frequency of 600Hz. What is the wavelength?
GaryK [48]

Answer:

10.7 m

Step-by-step explanation:

Given that,

The speed of a sound wave, v = 6,420 m/s

The frequency of the wave, f = 600 Hz

We need to find the wavelength of the wave. We can find it using the below relation as follows :

v=f\lambda\\\\\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{6420}{600}\\\\\lambda=10.7\ m

So, the wavelength of the sound wave is equal to 10.7 m.

4 0
3 years ago
Find the average range. Round the mean and the average range to the nearest tenth. (Show all your work on scratch paper, then en
NISA [10]
3, 12, 15, 25, 30, 40The range is the difference between the greatest and smallest values:
range = 40 - 3 = 37

Thee average is the sum of elements divided by the number of elements:
average = (<span>3 + 12 + 15 + 25 + 30 + 40</span>)/6
average = 125/6 = 20.83
4 0
3 years ago
What is 5 ÷ 70 + 15 ?
Tema [17]

Follow PEMDAS.

First divide 5 with 70

5/70 = 0.071 (rounded)

Next, add the number gotten with 15

15 + 0.071 = 15.071

15.071 is your answer

hope this helps

5 0
3 years ago
Read 2 more answers
Four less than the square of a number
matrenka [14]

Answer: x² - 4


<u>Four less than</u> the <u>square of a number</u>

       ↓                                   ↓

(Take away 4)                     x²


Four less than the square of a number = x² - 4

6 0
3 years ago
Please answer !!!!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!!!!!!
xxTIMURxx [149]
Since it is a right angle you would subtract 57 from 90 because both angles added together are 90°. 90-57= 33°
8 0
3 years ago
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