Math genius . Grade 9. NAFIS by Suhad

• 64

• 27

• 12

• 36

Answer explanation

To calculate 4 to the power of 3, you multiply 4 by itself 3 times: 4 * 4 * 4 = 64. Therefore, the correct answer is 64.

• 36
• 48
• 24
• 12

What is 4 out of 80 as a percent ?

• 5%

• 3%

• 6%

• 8%

Answer explanation

To find 4 out of 80 as a percent, divide 4 by 80 and multiply by 100. (4/80) * 100 = 5%.

• 1/3

• 1/4

• 2/5

• 1/8

Answer explanation

The fraction for 0.3 recurring is 1/3. This is because 0.3 recurring is equivalent to 0.3333..., which simplifies to 1/3.

find the volume of a pyramid with a height of 5m and a square base with a length of 3m?

• 10 cubic meters

• 15 cubic meters

• 8 cubic meters

• 20 cubic meters

Answer explanation

The volume of a pyramid is calculated using the formula V = (1/3) * base area * height. Since the base is a square with side length 3m, the base area is 3^2 = 9 square meters. Therefore, V = (1/3) * 9 * 5 = 15 cubic meters.

Find the median of these values (4 , 7 ، 10 ، 13 ، 8 )

• 8
• 10

• 13

• 11

Find the median of these numbers ( 2 , 1 , 15 , 6 , 3 ,20 )

• 5.5

• 6

• 3

• 4.5

Answer explanation

To find the median, first arrange the numbers in ascending order: 1, 2, 3, 6, 15, 20. Since there are 6 numbers, the median is the average of the middle two numbers, which are 3 and 6. (3 + 6) / 2 = 4.5

• 20X

Answer explanation

To find the product of two terms with the same base, add the exponents. Therefore, 5x^3 * 4x^4 = 20x^(3+4) = 20x^7. The correct choice is 20x^7.

Answer explanation

The correct choice is 9y^2(2 + 3y) because the given equation simplifies to 9y^2(2 + 3y) after factoring out the common factor 9y^2.

find the missing side (c) of this triangle

• 6

• 7

• 8

• 5

Answer explanation

To find the missing side (c) of the triangle, use the Pythagorean theorem: a^2 + b^2 = c^2. Given a=3 and b=4, 3^2 + 4^2 = c^2. Solving for c, we get c=5. Therefore, the missing side is 5.