When chords intersect in a circle, the vertical angles formed intercept congruent arcs

Find the exact value of the composition. arccos (cos pi/2)

I am a 3 digit number. my tens digit is 5 more than my ones digit. my hundreds digit is 8 less than my tens digit. what number am i?

The circumference of a circle with a diameter of 15 cm?

A teacher has 24 students in her class. She wants to divide them into 4 equal groups. Write an expression to represent the number of students in each group.

Is (2,4) a solution of - 4x+7y = - 8

Many and his friends were comparing how much each of them grew last year. many grew 4 inches. jeff grew 1 1/2' times that amount. allison grew 4/4 as much. sarah 3/5 as much.

25500000 in scientific notation

Lindsay ate 7/8 of an apple. what percent of the apple did he eat

What is 10:16:3 simplified?

Joe borrowed $2000 from the bank at a rate of 7% simple interest per year. How much interest did he pay in 5 years