Answer:
like 2/3 or 15/16; Mixed number - like 1 1/2 or 4 5/6; Integer - like 5 or 28
Step-by-step explanation:
Answer: D
Step-by-step explanation:
Answer:
This is pythagoras
A squared plus b squared equals c squared.
The unknown side is c as its the hypotenuse,
So the length of the first side is 6.4 this squared = 40.96
The other length is 12 as 6 is the radius so the diameter of the circle amd therfore the length of the triangle is 12.
12 squared is 144
144 + 40.96 = 184.96
The length of c squared is 184.96
To find the length of c alone we calculate the square root.
The square root of 184.96 = 13.6
? = 13.6
Answer:
Step-by-step explanation:
Split the second term (5x) into two terms. Multiply the coefficient of the first term (2) by the constant term (3):
Find which two numbers add up to 5 and multiply into 6:
Split 5x as the sum of 3x and 2x:
Now factor out a common term for the first 2 terms:
And do the same for the last 2 terms:
Re-insert:
Factor out the common term 2x+3 and insert the values in front of the parentheses (x and 1):
Separate the parentheses and equal them to 0. Solve for x:
and
Answer:
We use scientific notation as sometimes numbers are so so big, that it becomes inconvenient for us to write the actual number.
Step-by-step explanation:
For example, if you have 9 billion of something, you wouldn't want to write those 9 zeroes all the time.
When writing in scientific notation we count the number of decimal places to when we have one non-zero integer to the right of the decimal place. We then write that number and multiply it by ten to the number of decimal places you counted earlier.
e.g. 4.8 X 10^7
