Algebra
Geometry
Advanced
Riddles
100

The value of x if 

3(2x-5)-4x=7

What is x = 11?

100

The value of x if angle ROT is 124 degrees.

What is  130/7 or about 18.57 ?

100

The name of the property that states  a(b+c)=ab+ac .

What is the distributive property?

100

The probability of drawing two blue marbles from a bag that has 5 red, 4 blue, and 3 green marbles...drawing without replacement.

What is  1/11 ?

200

The equation of the line perpendicular to  y=-(1/3)x+9 and passing through  (-6,2) .

What is  y=3x+20 ?

200

The equation for a line that is perpendicular to  4x-2y=10 and passes through the point  (-1,7) .

What is  y=-(1/2)x+6.5 ?

200

The type of function that is written in the form  f(x)=aabs(x-h)+k .

What is the absolute value function?

200
At noon, a 6 foot tall student notices that her shadow is 4 feet long. Under the same sun, a tree casts a 20 foot long shadow. This is the height of the tree.

What is 30 feet?

300

The value of  f(-2) if  f(x)=2x^2-5x+3 .

What is 17?

300

The original vertices of the triangle are A(-2, 1), B(3, 1), C(1, 4). After a reflection across the y-axis and a translation left 3 and up 5, these are the vertices of A', B', and C'.

What is A'(-1,6), B'(-6,6), and C'(-4,9)?

300

The trinomial expression that results from the product of  3x(x+5)(2x-7) .

What is  

6x^3+9x^2-105x

?

300

The number of full price slices and on sale slices of pizza if a group of friends buy 12 slices total. Some slices cost $3 full price and some are on sale for $1.50. The group spends exactly $30 total.

What are 6 full price and 6 on sale?

400

The value of k if the line passing through  (4,7) and  (k,13) and has a slope of 2.

What is  k=7 ?

400

The height from the ground to the windowsill of a building if a firefighter is standing 60 feet away from the building and the angle of elevation from the firefighter to the windowsill is 42 degrees. (Round to nearest foot)

What is 54 feet?

400

The solution to the inequality  3^x+7>88 .

What is  x>4 ?

400

The product of the two page numbers if Bob opened a book and discovered that the sum of the two page numbers he turned to was 21.

What is 110?

500

The inequality representing all solution to  5-2(3x+4)<9x+1 .

What is  x>-1 ?

500
The volume of a cone with a radius of 5 cm and a slant height of 13 cm. (in terms of pi with label)

What is 100pi cm^3?

500

The function that is the derivative of  f(x)=4x^3-7x^2+8x .

What is   f(x)=12x^2-14x+8  ?

500

On a farm that has cows and ducks, this is the number of ducks if there are 18 legs and 7 heads in total.

What is 5 ducks?