How can I improve my math? How can I get better grades and scores in competitions like AMC 8, 10, 12, and MATHCOUNTS? I get low scores and it's really annoying. I've taken so many, I'm starting to feel mad at myself and feel stupid and dumb. How can I make sure I don't get bad grades?

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

If 20% of a number is 35, what is 50% of that number?

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.