Wrong those are considered complex numbers. pure imaginary numbers have ,0 for a and are thus in the form. 3i, -2i, 17i. etc
Answer: GCF of 40 and 42 is 2
Hi there!
To find the percent of change we can use the following formula:

Let's fill in our data

Subtract

Divide

And finally multiply

Hence, the percent of change is negative 20%.
~ Hope this helps you!
Answer:
<h3>A≈50.27in²</h3>
Step-by-step explanation:
A=πr2=π·42≈50.26548in²
I hope it's help