A test was marked out of 80. a boy scored 60% of the marks on the test. how many did he score?

If the area of a rectangle is 30 and the perimeter is 34. is are the dimensions of the rectangle

Find the first term and the common difference of the arithmetic sequence whose 5 th term is 3 and 19 th term is 45.

A circle has a central angle measuring 90 that intersects an arc of length 117.75

mary is 3 years less than twice as old as her sister. mary is 11 years old. write and solve an algebraic equation to find mary's sisters age.

Write an equivalent expression for 5 (-2x - 3)

If a sequence is defined recursively by f (0) = 2 and f (n + 1) = - 2f (n) + 3 for n ≥ 0, then f (2) is equal to

Vertex of - 2 (x+3) ^2+7

Boat 1 leaves a dock headed due west at 8:00 AM traveling at a speed of 12 mph. At the same time a boat 2 leaves the dock headed due south traveling at a speed of 24 mph.

A Mathematics test was taken by 4 boys and 6 girls. The mean marks of the 10 students was 49. a) Calculate the total marks obtained by 10 students. b) If the mean marks of 6 girls was 51, calculate the mean marks of 4 boys.

Find an equation using absolute value that has the given solutions, a. two solutions, 22 and 22 b. two solutions, - 51 and 5 c. two solutions, - 9 and 39 d. one solution, 18