What is the square root of -16? 0-81 041 OO

Mathematics

2 answers:

Nady [450]3 years ago

7 0

Answer:

4 i

Step-by-step explanation:

JulijaS [17]3 years ago

5 0

Answer: 4 i

Finding square roots of of numbers that aren't perfect squares without a calculator.

Example: Calculate the square root of 10 ( ) to 2 decimal places.

Find the two perfect square numbers it lies between.

Divide 10 by 3.

Average 3.33 and 3. ( ...

Repeat step 2: 10/3.1667 = 3.1579.

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What process do you use to find the percent change of a quantity?

Sever21 [200]

First, we need to get the amount of change:
The amount of change can either be an increase or a decrease.
It can be calculated as follows:
amount of change = $\frac{"new"value - "old"value}{"old" value}$

If the amount of change is positive, then it is an increase
If the amount of change is negative, then it is a decrease

Then, we need to convert this amount into a percentage:
Changing the amount into a percentage can simply be done by multiplying this amount by 100
This means that:
% of change = amount of change * 100

Combining the two steps:
% of change = $\frac{"new"value - "old"value}{"old" value}$ * 100

Examples:
The original price of a certain product was $10. It then became $12. Find the % of increase.
% of change = $\frac{12-10}{10} * 100$ = 20%
This means that the price increased by 20%

The temperature decreased from 25 degrees to 20 degrees. Find the percentage of decrease.
% of decrease = $\frac{20-25}{25} * 100$ = -20%
This means that the temperature decreased by 20%

Hope this helps :)

7 0

3 years ago

Read 2 more answers

10 is 5% of what number

Tcecarenko [31]

The number is 200 .
10 is 5% of 200

8 0

3 years ago

Hey guys! I pulled a all nighter and im feeling energetic!

telo118 [61]

Answer:

Step-by-step explanation: