Melodie, a super excited khan academy user, has increased her points by 75% in a week. she's at 14,000 points now. how many points did melodie have on khan academy last week?

8,000 points.

Step-by-step explanation:

Let x be the number of points Melodie have on Khan Academy last week.

We have been given that Melodie has increased her points by 75% in a week. She's at 14,000 points now.

We need to figure out x such that x plus 75% of x equals 14,000. We can represent this information in an equation as:

Upon dividing both sides of our equation by 1.75 we will get,

Therefore, Melodie have 8,000 points on Khan Academy last week.

ok

step-by-step explanation:

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s