How do you find an exact value for sin of 40 degrees without using a calculator

When Sammy's school bus has traveled 4.3 miles, Sammy has completed 40% of his trip home from school. How many miles does Sammy travel on the school bus from school to home?

8 more than the product of 12 and 4

Which is the outlier in this set of values? 3.4 4.5 2.3 5.9 9.8 3.3 2.1 3.0 2.9

Brett has 5/6 of his monthly income left to spend. He has budgeted 1/8 of his income for a new video game and 1/3 of his income for savings. Determine if each statement is true or false a.

Shelly drove 2.5 hr at 50 mi per hr and 1.25 hr at 62 mi per hr. How far did Shelly drive?

Ursula hiked 6 1/2 kilometers through the woods. How many decimeters did she hike?

The equation for mixture in a box of green (g) and yellow cubes is m = 4g + 5. If the mixture totals 29, what is the number of yellow cubes in the box?

Mr. Bryan's class has 60 students. 1 of the students stay for tutoring on Monday. If Mr. Bryan equally divides the students that stay 4 for tutoring into 5 groups, how many students are in each group?

Statistical question

He polynomial 2x3 - 5x2 + 4x - 10 is split into two groups, 2x3 + 4x and - 5x2 - 10. The GCFs of each group is then factored out. What is the common binomial factor between the two groups after their GCFs have been factored out?