Examples for secondary school students - page 15 of 212
Number of problems found: 4231
- Midpoint between conjugate
Find the midpoint between two roots: 2+3.464i and 2 - 3.464i - Three members AP
There are arithmetic sequence x + 3, 2x + 3, 5x - 3. If the common difference is 3, find x. - An aircraft 2
An aircraft jet engine has a thrust of 80 kN. What impulse is produced in 30 s? - An integer
An integer is 17 more than five times another. If the product of the two integers is -6, then find the integers. - Solve:
Solve: 2r²+7r-r²-9 - ReIm notation
Let z = 6 + 5i and w = 3 - i. Compute the following and express your answer in a + bi form. w + 3z - Binomial probability
What is the binominal probability that at least 4 of the six trials (n=6) are succeeded where φ = 0.50? - Two pendulums
In 24 s, the first pendulum performed 12 oscillations and the second 16 oscillations. Determine the periods and frequencies of both pendulums. - Five number summary
Find the five-number summary for these data and make a boxplot. 14,5,12,19,2,35,5,4,3,7,5,8 - Harmonic series
Insert four members between 5/3 and 5/11 to form harmonic series (means). - Vector perpendicular
Find the vector a = (2, y, z) so that a⊥ b and a ⊥ c where b = (-1, 4, 2) and c = (3, -3, -1) - Reciprocal value
How do I calculate a number x that is nine greater than its reciprocal (1/x)? - Coordinates of vector
Determine the coordinate of a vector u=CD if C(19;-7) and D(-16;-5) - A perineum
A perineum string is 10% shorter than its original string. The first string is 24. What is the 9th string or term? - Inverse matrix
Find out the inverse by Gauss elimination or by reduction method. A=[2/3. 1 -3. 1/3] - Intercept with axis
F(x)=log(x+4)-2, what is the x intercept - Dice
We threw ten times playing dice. What is the probability that the six will fall exactly four times? - Evaluation of expressions
If a²-3a+1=0, find (i)a²+1/a² (ii) a³+1/a³ - Functions f,g
Find g(1) if g(x) = 3x - x² Find f(5) if f(x) = x + 1/2 - Difference AP 4
Calculate the difference of the AP if a1 = 0.5, a2 + a3 = -1.1
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