"ces If X is a normal random variable with mean 10, and if the probability that X is more than 9.54 is 5910 (as shown below), then what is the standard deviation of
X? (Note: the diagram is not necessarily to scale)
A
OA 2.00
OB. 1.00
O C. 1.33
OD. 0.50

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

10000

step-by-step explanation: divide by 2,

answer: 819.89 miles across america

step-by-step explanation: