How many days would it take to spend $8 million at the rate of $1 per second?

answer:

step-by-step explanation:

note :

( a + b )^3 = a^3 +b^3 +3 a²b +3b²a + *)

the condition is : r = 1   and   p=1

put : x= a   and   b = 1   in (*) you have :

(x + 1)^3 = x^3 +3x² +3x +1

the zeros is : x = - 1

bcause : x^3 +3x² +3x +1 = 0     (x + 1)^3 = 0   so : x = - 1

answer:

$7.20

step-by-step explanation:

14x7.20=100.80

answer:

first option sin20 times eight

step-by-step explanation:

this is a right triangle, and we have the hypotenuse 8 (the side opposite to the angle of 90°), and angle of 20°, and we want to calculate the opposite leg (x) to the angle of 90°. the trigonometric function that relates the opposite leg to an angle and the hypotenuse is sine:

replacing the values:

solving for x: multiplying both sides of the equation by 8:

answer: we can calculate x with sin20 times eight