Brain Bowl Practice Quiz: Test Your Knowledge

Subtracting 3 from both sides gives 2x = 4. Dividing by 2 yields x = 2, which is the correct solution.

Neon is a noble gas, known for its inert properties and is often used in lighting. The other options do not belong to the noble gases group.

The area of a rectangle is calculated as length multiplied by width. Multiplying 8 by 5 gives 40 square units, which is the correct answer.

DNA stands for Deoxyribonucleic Acid, which carries the genetic instructions used in growth and reproduction. The other options are incorrect acronyms.

Mars is known as the Red Planet due to the presence of iron oxide on its surface, which gives it a reddish appearance. This distinctive color is what earned the planet its nickname.

Dividing both sides by 3 simplifies the equation to x - 2 = 4, leading to x = 6 when 2 is added to both sides. This method follows basic algebraic manipulation.

Mitochondria are known as the powerhouses of the cell because they generate ATP through cellular respiration. The other organelles have different functions within the cell.

Newton's Second Law states that force equals mass multiplied by acceleration (F = ma). This fundamental law explains the quantitative relationship between an object's mass, acceleration, and the applied force.

The sum of the angles in any triangle is 180°. Subtracting the given angles (35° + 65° = 100°) from 180° leaves 80° for the third angle.

Dividing the equation by 2 simplifies it to x² - 4 = 0, resulting in x² = 4. While both 2 and -2 satisfy the equation, the positive solution is 2.

The molecular weight of CO₂ is calculated by adding the atomic weight of carbon (12 g/mol) to twice the atomic weight of oxygen (2 x 16 g/mol), resulting in 44 g/mol. This is a standard calculation in chemistry.

The perimeter of a square is calculated by adding the lengths of all four sides. Since each side is 9 units, the perimeter is 4 x 9 = 36 units.

Expanding (a + b)² using the binomial theorem gives a² + 2ab + b². This is a fundamental algebraic identity that is widely taught in high school math.

The speed of light in a vacuum is a fundamental constant measured as approximately 3 x 10❸ meters per second. This value is critical in many areas of physics.

A catalyst speeds up a chemical reaction by lowering the activation energy needed, without being consumed in the process. This property distinguishes catalysts from reactants.

By isolating x from the second equation (x = y + 1) and substituting into the first, the equations simplify to yield y = 5/3 and x = 8/3. This systematic substitution confirms the correct solution.

The car's speed is 150 km divided by 3 hours, which equals 50 km/h. Multiplying 50 km/h by 4.5 hours results in a distance of 225 km.

Differentiating each term separately, the derivative of 3x² is 6x and the derivative of -5x is -5, while the constant term drops out. This results in the derivative 6x - 5.

The function becomes undefined when the denominator equals zero. Setting x - 2 to zero shows that x = 2 causes the function to be undefined.

After 30 years, which is equivalent to three half-lives, the remaining fraction of the substance is (1/2)^3, or 1/8. This illustrates the exponential decay process inherent in half-life calculations.