Maths practice for 14 year olds - page 337 of 362
Number of problems found: 7232
- Two cars
Car A1 goes at an average speed of 127 km/h, and the second car, A2, goes at 122 km/h. How many seconds will it take car A1 to circulate car A2? Assume that both cars are 4.7 meters long and the safety gap between cars is 2.6 meters. - Inscribed rectangle
The circle area is 231. Determine the area of the inscribed rectangle with one side 13 long. - Tachometer
Tatra's tachometer shows the initial state 275639 km this morning. Today, Tatra travels at an average speed of 28 km/h. Determine the function that describes the Tatra's tachometer depending on the time. What is the state of the tachometer after 7.1 hours - ISO trapezium
Calculate the area of an isosceles trapezoid with base 50 long, leg 12 long, and with the angle between the base and leg 70 degrees. - Alcohol 2
Two types of alcohol, one 46% and second 64%, give 16 liters of 54% alcohol. How many liters of each type are in the mixture? - Combi-triangle
On each side of a square, 13 different points are marked (not at the vertices). How many triangles can be constructed from this set of points such that each vertex of the triangle lies on a different side of the square? - V - slope
The slope of the line whose equation is -6x +7 = 0 is - Price reduction
The price of the camera is 360 Euro on sale. They reduced its price to 198 Euro. Calculate the percentage reduction in the price of the camera. - Speedometer
The speedometer of a car reads 52 km/h. It's accurate to within 4.9% What is the maximum possible error? - Slope form
Find the equation of a line given the point A(7, 2) and slope -1.9. Arrange your answer in the form y = ax + b, where a and b are the constants. - Slope
Calculate the slope of a line that intersects points (77,-35) and (11,44). - 30-60-90
The longer leg of a 30°-60°-90° triangle measures 14. What is the length of the shorter leg? - Sales off
What was its original price if a sweater sells for $ 10 after a 25% markdown? - Diameter
If the endpoints of the diameter of a circle are A(10, -10) and B (9, -2), what is the circle's radius? - Scouts
The boys from the scout group traveled a distance of 140 km over d days. Every day, they walked less than the previous day. How many kilometers did the scouts walk on the first day? - Chord - TS v2
The radius of circle k measures 72 cm. Chord GH = 11 cm. What is TS? - Chord - TS The radius of circle k measures 68 cm. Arc GH = 47 cm. What is TS?
- Rhombus diagonal
The area of a rhombus is 790. One diagonal measures 45. Find the length of the second diagonal. - Dog
The man went with a dog on a long walk 15 km from the house. The man is walking at a speed of 4 km/h. A dog constantly runs between the house and the man at 15.2 km/h. How many kilometers will the dog run when they reach its destination? - Division
Three siblings, Helena, Oliver, and George, split the bag with candies on merit in the ratio 1:10:2. How many candies should each get if in the bag were 169?
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