Answer:
PR = 11
Step-by-step explanation:
PR = PQ + QR = 8 + 3 = 11
your answer is a complex number making your question wrong
First z²+z+20=0, just to make it a quadratic equation, so we can use the quadratric formula:
x=( -b±√b²-4ac)/2a
so to find a b and c we compare
YOUR QUESTION SHOULD BE Z² +Z-20=O.
A. 11.4
Data:
P = 7
r = 0.07
Calculation:
