Tim is 7 years younger than his sister. if his sister is y years old, write an expression to represent Tim's age.

The sum of a rational and irrational number is

45%of two fifteenths of the product of (x+1) and one twelfth y

Find each probability. Rolling a 1 and then another 1 when a number cube is rolled twice

Cotx + tanx=2cosecx

If s-t=5, what is the value of 3s - 3t + 3?

Every day, Navya's teacher randomly picks a number from 1 to 80 to be the number of the day. The number of the day can be repeated. There are 180 days in the school year. Predict how many days the number of the day will be greater than 20.

Which is the polynomial function of lowest degree with leading coefficient of 4 and roots 7 and 3?

If military time is 0145, what time is it on a regular clock

Solve the equation. 5 х + 8 - 3x = - 10

12x=7y-10yis this a linear equation? what is it in standard form?