2x+ky=7 and 4x-9y=4 find value of k if matrix of coefficients is singular

A = {1, 3, 5, 7, 9} B = {2, 4, 6, 8, 10} C = {1, 5, 6, 7, 9} A ∪ B = ? a ∅ b integers between 1 and 10 c integers from 1 to 10 inclusive

A town's water tower holds 1 million gallons of water. During the day, the tower is only 2 }5 of its full capacity.

Bill is a car salesman. he earns $200 for every car he sells plus a 3% commision. if bill sells 3 cars in one week for a total of $32,343, what are his total earnings for the week?

The perimeter of a rectangle is 40 inches. If the width of the rectangle is 6 inches, what is the length? A. 14 inches B. 34 inches C. 20 inches D. 28 inches

If 9 cubic blocks with a side length of 1/3 inch are needed to find the volume of a cube, what is the volume of the cube?

What percent of 150 equals 24.9

Raul wants to buy a new collar for each of his 3 cats. The collars come in a choice of 4 different colors. Step 2 of 2 : How many selections of collars are possible if repetitions of colors are not allowed

Need to find the side lengths for a triangle with sides a=2a, b = 3a, c = 17. need to solve for variable a and not sure how.

Which inequality has no solution? 6 (x+2) > x-3 3+4x<2 (1+2x) -2 (x+6) < x-20 x-9 < 3 (x-3)

Every cupcake Jake bakes weighs 0.45 pounds how much will a box of 100 Cupcakes weigh