Solve each system by substitution. (3x+2y=23, 1/2x-4=y), (4x=3y-2, 18=3x+y), (4y+3=3y+x, 2x+4y=18), (4y-x=5+2y, 3x+7y=24)

What is the mean and the median for 72 75 78 72 and 73

All 5 students in Mrs. Awful's class got a 50 on the test. What's the average grade in this class?

7 (x + 3) - 3 (4x + 9) = 14

Rachel ate 1/8 of the vegetarian pizza and 1/4 of the cheese pizza. How much pizza did she eat?

Which is greater 6.76 or6.759

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. Without looking in the hat, dan takes out a marble at random.

The table of values below shows data for a five-word spelling test. Number of Letters vs. Percentage who Spelled Correctly Word Number of letters in the word Percentage of students who spelled the word correctly 1 7 48 2 9 12 3 5 73 4 6 59 5 8 27

Would this be a reflection, dilation, rotation, or a translation? (a, b) → (b, - a)

15 Aman's annual salary is $45 000. His tax free allowances total $13 000. He has to pay a tax of 35% on his taxable income. The tax payable is (A) S4 550.00 (b) $11 200.00 (C) $15 750.00 (d) $20 300.00

Which expression is equivalent to 36x 12?