Simplify fully (3x)

3

I am thinking of a number. I subtract 10 then divide by 2 and I now have 19. What was my original number?

Megan hiked 15.12 miles in 6.3 hours. If Megan hiked the same number of miles each hour, how many miles did she hike each hour?

4. Flu cases this past flu season (4 months or 20 weeks) in the Butterfield, Kansas, school system were about 15 per week. For the entire state, the weekly average was 16 and the standard deviation 2.35.

Enter each data set into the statistics calculator. Make note of the mean, median, and shape of the histogram of each data set.

Samantha must include 1 English class, 1 Algebra class, and 1 Biology class in a schedule. There 3 English teachers, 4 Algebra teachers, and 2 Biology teachers. How many different schedules are possible?

What is 4 square root of 81 to the fifth power in exponential form

What is the value of 3.5 (11) + 1.9 (11) + 1.6 (11) ?

Kai randomly surveys eighth graders at his school and learns that 7 of 35 respondents own a video gaming system. Based on these data, how many of the 150 eighth grader students in Kai's school would b expected to own a video gaming system

The length of a rectangle is twice its width the length is 4 & a half feet what is the area of the rectangle

Convert 75% into simplest and also into decimal