d = 1/2 hw
hw = 2d
h = 2d/w
2, 3i, -3i are the real and complex solutions of the polynomial equation.
Polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and positive-integer powers of variables
The given polynomial is x³-2x²+9x-18
x³-2x²+9x-18=0
Take the common terms from first two terms
x²(x-2)+9(x-2)
(x²+9)(x-2)=0
(x²+3²)(x-2)=0
x-2=0
x=2
and x²+3²=0
x=3i and x=-3i
Hence, 2, 3i, -3i are the real and complex solutions of the polynomial equation.
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b. 69.00 seconds
c. 0.33 seconds
d. 2.30 seconds
Answer:
Step-by-step explanation:
Given that the weights for a population of North American raccoons have a bell-shaped frequency curve with a mean of about 12 pounds and a standard deviation of about 2.5 pounds
Since bell shaped is given we can assume that this follows a normal distribution symmetrical about the mean.
To find 95% two values we can use Z critical value for 95%
i.e. ±1.96
95% will lie between 12±1.96(2.5)
= 12±4.9
=(7.1, 16.9)