Questions in mathematics

Questions in mathematics

[Done] How do you solve [tex]x^2 - 10x + 9 = 0[/tex] by completing the square?

[Done] In how many ways can 12 one-dollar coins be shared between Josh, Frank, and Suzy if each of them receives at least 3 coins?

[Done] A ball is thrown into the air with an upward velocity of 44 ft/s. Its height \( h \) in feet after \( t \) seconds is given by the function [tex]h = -16t^2 + 44t + 9[/tex]. What is the height of the ball after 2 seconds?

[Done] A bottle contains 12 red marbles and 8 blue marbles. A marble is chosen at random and not replaced. Then a second marble is chosen at random. Determine the probability that the two marbles are not the same color.

[Done] What is 15 times what equals 45?

[Done] How do you calculate \((720 \div 10)^3\)?

[Done] Rewrite the following linear equation in slope-intercept form. Write your answer with no spaces. [tex]y + 2 = 4(x - 3)[/tex]

[Done] The areas of two circles are \(36\pi\) and \(64\pi\). What is the ratio of the diameters? What is the ratio of the circumferences?

[Done] Which number is 100 less than 38 tens?

[Done] On average, Exante Express trains are 50 km/hr faster than Paral passenger trains. A Paral passenger train requires 60% more time than an Exante train to travel 1800 km from Matsay to Rawindi. Calculate the average speed of each train. Also, calculate the time it takes for each train to complete the journey.