a state offers two lottery games. winone and playball. both games cost $2 per ticket.
• in winone the player picks a single letter from a to j and a single digit from 0 to 9. if both the letter and the digit match the letter and the
digit picked on that day, the player wins $150
• in playball, the player picks a single letter from a to tand a single digit from 0 to 9. if both the letter and the digit match the letter and the
digit picked on that day, the player wins $280.
if the cost of a playball lottery ticket were changed to $1 and the prize to $250, what would the expected value be?
a $0.85
b5025
c. $025
d $0.75

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.

answer: sensy

step-by-step explanation:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w