Step-by-step explanation:
4x^2-9
=(2x)^2 -3^2
=(2x+3) (2x-3)
Hope this helps you.
1. We know that 30% expressed as a decimal is 0.30
Since 30% of people were using the internet, 0.30*3200 is our answer.
3200*0.30= 960.
Therefore 960 people were using the internet out of the 3200 surveyed.
Answer: Red is 0.18 And Blue is 0.68
Step-by-step explanation:
Look at sizes and comparisons between the sizes and all together should add to 1
Answer:

Step-by-step explanation:







