Examples for secondary school students - page 29 of 212
Number of problems found: 4231
- Andrew
Andrew had an offer for a job starting at 100000 per year and guaranteeing her to raise 10000 a year for the next years. Find her salary for the 4th year. - Sum of GP members
Determine the sum of the GP 30, 6, 1.2, to 5 terms. What is the sum of all terms (to infinity)? - AP members
What is the value of x2, x3, x4, x5…of the terms (of arithmetic progression) when x1 = 8 and x6 = 20? - Wheelchair
The boy pushes the wheelchair with a force of F1 = 20N. The wheelchair exerts a force of F2 on the boy. How large is this force? - Beads
How many ways can we thread four red, five blue, and six yellow beads onto a thread? - Non linear eqs
Solve the system of non-linear equations: 3x²-3x-y=-2 -6x²-x-y=-7 - Subsets
How many 19 element subsets can be made from the 26 element set? - Kerosine and petrol
If 4 liters of petrol containing 15% kerosine are added to another 7 liters of petrol containing 10% kerosine, what percentage of the petrol is kerosine? - Ball game
Richard, Denis, and Denise together scored 932 goals. Denis scored four goals over Denise, but Denis scored 24 goals less than Richard. Determine the number of goals for each player. - Consecutive numbers
The sum of ten consecutive numbers is 105. Determine these numbers (write first and last). - Probability
In the lottery, numbers are drawn five from 50. What are the chances you will win the first prize? - Equilateral triangle v2
An equilateral triangle has a perimeter 36 dm. What is its area? - 10 pieces
How to divide the circle into ten parts (geometrically)? - Vector sum
The magnitude of the vector u is 12 and the magnitude of the vector v is 8. The angle between vectors is 61°. What is the magnitude of the vector u + v? - Combinatorics
The city has 7 fountains. Works only 6. How many options are there that can squirt? - Fraction
Fraction frac(0, overline(38))(0,38) write as fraction a/b, a, b is integers numerator/denominator. - Goniometric form
Determine the goniometric form of a complex number z = √ 110 +4 i. - Sum of series
Determine the 6-th member and the sum of a geometric series: 5-4/1+16/5-64/25+256/125-1024/625+.... - Sine
In the triangle Δ ABC, if sin α =0.8 and sin β =0.6 Calculate sin γ. - Decibel
A circuit has an input power of 92 mW. Its output power is 12 mW. What is the loss in decibels?
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