Q and A for the topic: General

A circle is circumscribed and inscribed in a square of area 64cm. Calculate the area of the circular ring bounded by these two circles.

The diagonal of the TV is 140cm. The ratio of the height to the length of the screen is 9:16. Can the TV fit lengthwise between two shelves that are 120cm apart?

4ab+13bc

Prime factor of 1245

Prime factor of 1150

Solve (10x-7=(8x+9) visual step by step

Express 2.50 as a percentage

Employees in 2012 paid 4.2% of their gross wages towards social security while employers paid another 6.2%. How much will someone earning 32,000 a year pay towards social security out of their gross wages ?

Y=2x-3 Y=2x-3 State the number of solutions. Explain the reason

Y=-x-6 Y=-x+6 State the number of solutions. Explain reason

y=-x+12 Y=-2x+12 State the number of solutions. Explain your reasoning

Y=2x+1 Y=2x+9 Solve

-x+2y=0 3x+2y=8 Solve

A set of train tracks are modeled by 3x+4y=-36 and a road is modeled by y=-3/4x + 11. Will the road cross the train tracks? Explain the reasoning

Khaled has a cube in his hand and takes it to a painter who has 6 different colors. He asks the painter to color the cube so that each face has a different color. In how many ways can this be done?

X+3y=4 X+2y=4 Solve by elimination

4x+3y=3 5x+3y=6 Use elimination to solve

2x+3y=9 3x-y=8 Solve by elimination

5x+6y=2 6x+2y=18 Solve by elimination

2x+5y=2 3x+4y=-4 Solve by elimination