The difference of twelve times a number and nine times the number

Hector is five years less than double Mary's age. Mary is 12 years old 1 7 19 29 I believe it's 7 or probably not

Solve x for 3 х - 1 = - 13

What times 4will get to 80

Exspress each fraction in simplest form 5% = 1/10 = 12% = 1/8 = 15% = 1/5 = 25 = 3/4 = 37% = 2/5 = 50% = 3/5 = 62% = 7/8 = 83%=

Solve for x x/25 > 5

If the length of a cube is 2x2y units. What is the volume of the cube?

Two neighbors purchased a square lot that is 85 ft on each side. They intend to split the cost of a fence that connects opposite corners of the lot. The cost to build the fence is $11.45 per linear foot.

If a road has a grade of 30°, this means that it's angle of elevation is 30°. If you travel 1.5 miles on this road, how much elevation have you gained in feet (5280 ft = 1 mile) ?

Select from the drop-down menu to correctly complete the statement about the given figures. Triangles PQR and MNO are (here it has a drop down menu I'll include those options below) Similar or not similar? Two right triangles, PQR and MNO.

Find the product of (x + 3) (x - 3). a. x2 - 6x + 9 b. x2 + 6x + 9 c. x2 + 9 d. x2 - 9