Grade - math word problems - page 410 of 947

Number of problems found: 18923

Bracelet
The silver bracelet weighs 62g and contains 59g of silver. What is the purity of the bracelet?
Perpendiculars 36213
A right triangle with perpendiculars a = 3 cm and b = 4 cm rotates around a longer perpendicular. Calculate the volume and surface area of the resulting cone.
Subtracting 36203
The petals of each always have something in common. Can you figure out what number will be in the middle of the flower so that when subtracting and adding, the numbers come from the flowers? The flowers are numbered 50, 30, 20, 40, and 10.
Silver bracelet
The silver bracelet, which has a purity of 925 per mille, contains 25.9 g of silver. What is the weight of the bracelet?
Decreasing 36183
Prove that the sequence {3 - 4. n} from n = 1 to ∞ is decreasing.
The goldfish
The goldfish floats close to the wall of a circular pool with a radius of 10m. How many meters does it pass when it makes two circuits in the pool? (indicate the result to one decimal place)
Circular 36163
The circular park has an area of 31400 m². A trail runs across the center of the park. How long is it?
Sprinkler 36153
The rotary sprinkler has a spray of 18m. How much land can it irrigate from one place?
Tallest people a
As a group, the Dutch are amongst the tallest people in the world. The average Dutchman is 184 cm tall. If a normal distribution is appropriate, and the standard deviation for Dutchmen is about 8 cm, what is the percentage of Dutchmen who will be over 2 m
Wimbledon finals
Serena Williams made a successful first serve 67% of the time in a Wimbledon finals match against her sister Venus. If she continues to serve at the same rate the next time they play and serves six times in the first game, determine the probability that:
The ABCD
The ABCD trapezoid has a base length of a = 120mm, c = 86mm, and an area of S = 2575 mm². Calculate the height of the trapezoid.
Calculate
Calculate the height of an isosceles triangle with a base 37.8 mm long and an arm 23.1 mm long.
Triangle 36091
Decide if the triangle is right (sides 5,11,7, cm)
Probability 36081
There are 6 white and several red balls in the box. How many red balls must there be so that the probability of drawing a red ball is less than the probability of drawing a white ball or greater than the probability of drawing a white ball?
9-sided pyramid
Calculate the surface area and volume of a regular nine-sided pyramid if the radius of the circle inscribed in the base measures ρ = 12 cm and the height of the pyramid is 24 cm
Quadrilateral pyramid
In a regular quadrilateral pyramid, the length of the base edge is a = 8 cm, and the length of the side edge is h = 17 cm. Calculate the surface of the pyramid.
Seedbeds
The father wants to plant two seedbeds of carrots and two seedbeds of onion. Use a tree chart to find how many different options he has for placing the seedbeds.
Hydraulic - piston
The large piston of the hydraulic system has a capacity of 0.25 m² and a small 10 cm². How much force do we exert on the small piston to be lifted by 750 N?
Hydraulic 36031
The hydraulic blade has pistons with an area of 10 cm² and 500 cm². How much force acts on the larger piston if we act on the smaller piston with a force of 100 N?
Hydraulic 36021
The small piston of the hydraulic jack has a capacity of 40 cm² and a large 120 cm². How heavy will a body lift when a man weighing 70 kg stands on a small piston?

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