Let a, b, c and d be constants. Determine which of the lines, if any, are parallel or perpendicular.

Line 1: y-c=ax

Line 2: ay=-x-b

Line 3: ax+y=d

Audrey has a bag of similar sized refund green grapes. There are 12 red grapes and 13 green grapes in the bag. If the first 7 grapes she ate were green what is the probility that the 8th grapes she eats is green and the 9th grape she eats is red

Last Saturday 16 people worked at the theater. Four people worked the morning shift and 12 people worked the evening shift. They earned a total of $1,032.00. If each worker earned the same amount, how much did one worker earn

The line y = - 2x - 8 is graphed. Which ordered pairs are solutions to the equation? Check all that apply. (-8, 8) (-6, 2) (-2, 4) (0, - 4) (2, - 12)

Which is bigger 9.8 or 9.80

Find the dimensions of a rectangular persian rug whose perimeter is 18 ft and whose area is 20 ft squared. the persian rug has a length? (longer side) of nothing ft and a width? (shorter side) of nothing ft.

What is the solution to this equation 3x + 17 + 5) = 7x + 10

Round this number to the nearest 100. 3,817,453

There are 300 students in the middle school, 4 seventh graders are running for class president. Which type of survey below would give biased results?

Write the sum of 54+63 as the product of their GCF and another sum

In the number 6,779 which places contain digits where one digit is ten times as great as the other