Answer:
x³ - 5x² + 81x - 405 = 0
Step-by-step explanation:
Complex roots occur in conjugate pairs.
Thus given x = - 9i is a root then x = 9i is also a root
The factors are then (x - 5), (x - 9i) and (x + 9i)
The polynomial is the the product of the roots, that is
f(x) = (x - 5)(x - 9i)(x + 9i) ← expand the complex factors
= (x - 5)(x² - 81i²) → note i² = - 1
= (x - 5)(x² + 81) ← distribute
= x³ + 81x - 5x² - 405, thus
x³ - 5x² + 81x - 405 = 0 ← is the polynomial equation
You need to divide 658 by 120 because you know one gallon covers 120 square feet.
Answer:
17 units
Step-by-step explanation:
Distance between points 
is given by 
The trail starts at P(−2, 2) and goes to Q(5, 2).
Take 
units
It goes from Q to R(5, −5)
Take 
units
It goes from R to S.
Take 
units
units
An outlier is a point that is by itself of far from the rest of the points.
A cluster is a group of points that are very close together hence the cluster name.
sorry thats all i know
Answer: x= -7/5 procedure: -2x-8-1=3x-6+4 -2x-9=3x-2 -2x-3x= -2+9 -5x= 7 answer: x= -7/5
