What is the definition of mathematics?

What's the number for 2 hundreds 15 tens and 6 ones

What is 75% of 200?

77/10 as a mixed number

Ten people board an airplane that has 12 aisle seats. In how many ways can they be seated if they all select aisle seats

A group of people pay $720 for admission tickets to an amusement park. The price of an adult ticket is $15 and a child ticket is $8. There are 25 more adults than children. How many children are in the group.

A factory produced 150 tons of steel in one year. The next year, the output increased to 180 tons. What is the percentage increase in the output?

If y varies directlt with x, and y=12 when x=15, what is the value of x when y=16

What is the y-intercept of y = 1 + 6x?

A class of 20 music student say they play instruments 8 play guitar and 9 play piano how many people play both

Find the center and radius of (x + 9) ^2 + (y + 6) ^2 = 9. a: (-6, 9); 3 b: (-9, - 6); 3 c: (9, 6); 3 d: (-6, - 9); 9