Which number is not in scientific notation?

A) 9 ⋅ 10 to the power of 19

B) 7.8 ⋅ 10 to the power of 6

C) 1.45 ⋅ 10to the power of - 7

D) 0.33 ⋅ 10 to the power - 15

Ax-By=c solve for x. (a) x = - By+c/a

Passengers usually start to board their flights 1 hour before the scheduled take off time. The gate will be closed 15 minutes before the takeoff time. Jack's plane is scheduled to take off at 12:05 a. m. If he arrives at the gate at 11:45 p. m.

Fred has 230 animals at his zoo. Grace have 349 more animals at her zoo then Fred has. How many animals do they have altogether? Work has to be shown.

In the triangle, what is sin 45 degrees? Give your answer in simplest radical form.

If ∠ECD = 45° and ∠BED = 110° is ΔABE ~ ΔCDE? If so, by what criterion?

Before a renovation, a movie theater had 113 seats. After the renovation, the theater has 163 seats. What is the approximate percentage increase of the number of seats in the theater? A 30.6% B 49.7% C 44.2% D 31%

Your dad tells you that he will pay you $6 an hour for the 6 seconds that you take to wash your hands before dinner. How much did you make for washing your hands?

What is the answer for this function f (r) = 3.14 r square. what is f (3) ?

F (x) = 1/2*-2, what is f (14)

Find the speed Example: 396 miles in 6 hours