Answer:
x = ± 2
Step-by-step explanation:
Given
x² = 20 ( take the square root of both sides )
x = ± 
= ± 
= ± 2
Answer:
5 apples
Step-by-step explanation:
Solution,
4 apples are required for a pie tin with a diameter of 8 inches
For 1 inch of the pie tin 8/4=2 apples are required.
For 10 inches 10/2=5 apples are required.
Answer:
7.1
Step-by-step explanation:
- Find mean
- For each number you subtract the mean and square the result.
- Work out the mean of those squared differences and find square root of that.
- Hope that helped! Let me know if you need further explanation.
14^2 - 9^2 = a^2
Easy enough
14^2 = 196
9^2 = 81
196 - 81 = 115
The square root of 115 = 10.72
The third side is 10.72km
Answer:
b=5
Step-by-step explanation:
- We are going to use the basics of algebra to solve this
We need to isolate b by itself to find the value of b.
Subtract 12 from both sides
