# Examples for secondary school students

#### Number of problems found: 4219

- Variance formula

Find the variance of 10,10,10,20,20,30. - Harmonic HM example

Find the harmonic mean of 4 and 8. - Insert 4

Insert three arithmetic means between 3 and 63. - Reference angle

Find the reference angle of each angle: - Derivation

Does there exist a function whose derivation is the same function? - Logarithm

Determine the number whose decimal logarithm is -3.8. - What is 25

What is the trunk of 8 and 10? - Multiples of eight

Find the sum of the first 25 multiples of 8. - Complex conjugate

What is the conjugate of the expression 5√6 + 6√5 i? A.) -5√6 + 6√5 i B.) 5√6 - 6√5 i C.) -5√6 - 6√5 i D.) 6√5 - 5√6i - Value

Find the value of the expression: 6!·10^{-3} - Calculation

How much is the sum of the square root of six and the square root of 100? - Im>0?

Is -10i a positive number? - Reciprocal

Calculate the reciprocal of z=0.8-1.8i: - Discriminant

Determine the discriminant of the equation: 7x²-x+7=1 - Determine 4314

Find the rank of each null matrix. - A sample variance

Calculate the value of the sample variance. −8,−8,−3,13,4,−8,10,8 - Combinations equation

C(2, 8) + C(3, 4) = - The determinant

The determinant of the unit matrix equals 7. Check how many rows the A matrix contains. - Harmonic 4

Find the harmonic mean of -6 and 5. - Harmonic mean

Harmonic means of 6 and 12

Do you have homework that you need help solving? Ask a question, and we will try to solve it.