Grade - math word problems - page 720 of 968

Number of problems found: 19341

Pumping
The tank is filled with a larger pump in 12 hours and with a second pump in 15 hours. For how long does the tank fill when both pumps are switched on at the same time?
Natural numbers
How many natural numbers can we create less than 301 from the number 0,1,2,3,6,7?
View angle
At a distance of 10 m from the river bank, they measured the base AB = 50 m parallel to the bank. Point C on the other bank of the river is visible from point A at an angle of 32°30' and from point B at an angle of 42°15'. Calculate the width of the river
Water channel
The cross-section of the water channel is a trapezoid. The bottom width is 19.7 m, the water surface width is 28.5 m, and the side walls have a slope of 67°30' and 61°15'. Calculate how much water flows through the channel in 5 minutes if the water flows
Square side
What is the length of the side of the square if its perimeter is P = 124 mm
Decagon area
Find the area of a regular decagon if its side is 10 cm in size.
Three reds
What is the probability that all three of the seven cards will be red if three cards are drawn?
Fence elements
Mr. Winter is building a fence from perforated brick elements in the shape of a cuboid with dimensions of 15 cm, 15 cm, and 20 cm. the fence will be 15 cm wide, 150 cm high, and 10 m long. The mortar space will occupy 0.25 m³. How many brick elements does
Inner angles
The inner angles of the triangle are 30°, 45°, and 105° and its longest side is 10 cm. Calculate the shortest side length, and write the result in cm up to two decimal places.
Regular n-gon
In a regular n-angle polygon, the internal angle is 144 degrees. Find the number n indicating the number of sides of this polygon.
Triangle side
I have a circle with a diameter of 6.4 cm. I need to find out the length of the side of an equilateral triangle inscribed in a circle.
Pins 2
How many different possible four-digit pins can be found on the 10-digit keypad?
Regular Matrix Rank
What is the rank of a second-order square matrix if we can say that this matrix is regular?
The determinant
The determinant of the unit matrix equals 7. Check how many rows the A matrix contains.
Bank account
Peter succumbed to a bank's tempting offer, opened an account, and deposited CZK 1,051 into it. The account bore interest at 1.4%, credited once a year. The fee for maintaining this account was only CZK 140 per year. After seven years, he enjoyed how his
Savings interest
It was 1975, and Petr deposited the entire cash of 10,900.40 Euros in a savings account with 4% interest, credited monthly. He did not add anything to the book, and in exactly 15 years, he withdrew the entire amount in cash. How much did you choose?
Gloves
Petra has ten pairs of gloves in the closet. Six pairs are blue, and four pairs are yellow. At least when she pulls them out in the dark and wants to have one complete one-color pair, how many pieces of gloves need to be pulled out?
Photocopier
A photocopier enlarges a picture in the ratio of 7:4. How many times will a picture of size 6 cm by 4 cm be enlarged to fit on a 30 cm by 20 cm page?
A map
A map measuring 60 cm by 25 cm is reduced in the ratio 3:5 twice. What are the new dimensions?
Bean bag
A student tossed a bean bag. It landed 216 inches away. How many yards are equal to 216 inches?

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