Algebra
Simplify 2x+3x → 5x
5x
Find the sine of 30°
0.5
Convert 2.5 m to cm.
250 cm
What is the mode of {2, 3, 3, 4, 5}?
3
If f(x)=2x, find f(3).
6
Solve x+4=9.
x=5
Area of a triangle with base 10 cm and height 6 cm.
30 cm²
Volume of a cube with side 4 cm.
64 cm³
Median of {5, 7, 9, 11, 13}
9
Identify the vertex of y=(x−2)2+3.
(2, 3)
Expand (x+2)(x+3).
x2+5x+6
Circumference of a circle with radius 7 cm.
≈ 43.98 cm
Area of a rectangle 12 cm × 8 cm.
96 cm²
Mean of {10, 20, 30, 40}.
25
Find f(−2) if f(x)=2x2−3x.
14
Factor x2−9.
(x−3)(x+3)
Find the missing angle in a triangle with angles 50° and 60°
70°
Surface area of a cylinder with radius 5 cm and height 10 cm.
≈ 471 cm²
A die is rolled once. Probability of rolling a number > 4.
1/3
Determine the gradient of the line y=4x+7.
4
Solve 2x2−3x−2=0.
x=2,−1/2
A right triangle has hypotenuse 10 cm and one side 6 cm. Find the other side.
8 cm
A cone has radius 3 cm and height 4 cm. Find its volume.
≈ 37.7 cm³
A bag has 3 red, 2 blue, 5 green balls. Probability of picking a blue.
2/10=1/5
Sketch or describe the shape of y=x2.
Upward‑opening parabola