How do you solve

1. 13w=39. 2. 55=11x. 3. 5=r

in the last test 40% of all students in Mrs. Well's class got grade A. How many students are studying in this class, if there were 28 A's on the test?

Identify the law illustrated by: 12m + 0 is the same as 12m.

One pound equals how many kilograms

Tom begins his morning shift at 9:45 a. m. he works for 3 hours. he then takes a 45 minute lunch break before working his afternoon shift. what time does tom's afternoon shift begin?

You want to carpet 3 rooms of a house. Using the dimensions below, determine how much carpet is needed. Room 1:perimeter is 38 yards and the width of the room is 12 yards. Room 2: Perimeter is 50 yards and the width is 13 yards.

Find the square root of 3364 by prime factorization method

Which best describes independent events? The results of all events have different individual probabilities. The results of any previous events affects the probability of future events. The results of all events have the same individual probability.

1) Simplify 9 - {x - (7 + x) } 2) Simplify (-5) + (-4) + (7). 3) Evaluate A^2 for A = - 3. 4) Simplify and determine the coefficient of (-1/3x) (3y) (-2x). 5) Evaluate 5x3 + 2 for x = - 1.

Identify the coefficient of 2xy A. X B. 3 C. 2 D. 1

Is 0.5 degress celsius below freezing