Maths mock questions

1. Solve the equation: 3x + 5 = 17.

2. Calculate the area of a triangle with a base of 6 cm and a height of 8 cm.

3. Simplify the expression: (4x^2 - 7x + 3) + (2x^2 - 5x + 2).

4. Solve the inequality: 2x + 3 > 10.

5. If a car travels at a speed of 60 km/h for 3 hours, how far will it travel?

6. Find the value of x in the equation: 5(2x + 3) = 40.

7. Simplify the expression: 8(2x - 3) - 4(x + 5).

8. Solve the equation: 2(x - 4) = 10 + x.

9. Calculate the volume of a cube with side length 5 cm.

10. A bag contains 12 red marbles, 8 blue marbles, and 5 green marbles. What is the probability of picking a red marble randomly from the bag?