the runner's time to complete the marathon is 45 minutes. The time to complete the last marathon was 49.5 minutes. What is the percent decrease of the time ?

9.09%

Step-by-step explanation:

To find percent decrease you have to use this equation:

Initial = 49.5

New = 45

Plug in and solve:

The percent decrease is 9.09%

Hope this helps!!

- Kay :)

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

i dony know

step-by-step explanation: