Isolating a variable in the formula - math word problems - page 91 of 144
Number of problems found: 2877
- Cube diagonals
Calculate the length of the side and the diagonals of the cube with a volume of 27 cm³. - Rectangle 45
The perimeter of a rectangle is 60cm if the length of the rectangle is 20cm. a)find the width b)find the area. - Two friends
Peter can do all his work himself in 6 hours, while Martin can do the same work himself in 8 hours. Peter worked first and was then replaced by Martin, so the whole work was done in 6.5 hours. Calculate how long Peter worked before being replaced by Marti - Diamond diagonals
Find the diamond diagonal's lengths if the area is 156 cm² and the side is 13 cm long. - Resistance 7503
The resistance of a 40W light bulb is 10 Ohms. What voltage source is connected to it? What current is flowing through it? - Statistician 7500
A statistician monitored the variance of monthly wages and found its value to be 640,000. Determine the standard deviation of salaries if there is a one-off increase: a) about CZK 1,800, b) about 5%. - Sugar production
From 1 ton of beet, 150 kg of sugar is produced. 450 kg of lime is consumed to clean 1 ton of sugar. Calculate how many kgs of lime are consumed when processing 1 ton of sugar beet.
- Conservationists 7490
The conservation unit planted clearings on 4/7 (this is a fraction) on Saturday; on Sunday, he had 2,100 trees to grow. How many trees have conservationists planted on both days? - Area to volume
If the surface area of a cube is 486, find its volume. - Burdened 7485
The product was taxed at 20% and is sold for CZK 600. How many CZK was the product sold for if the government charged only 10% of taxes? - Marriage sttus
In our city, 3/5 of the women are married to 2/3 of the men. Find what part of the population is free. - Calculate 2
Calculate the largest angle of the triangle whose sides are 5.2cm, 3.6cm, and 2.1cm - Percentage 7469
The barrel contains 199 liters of 38% acid solution. What percentage of acid is created when we take 61 liters and replace it with the same amount of water? - Determine 7468
Determine the base if 2.8 per mille is 50. - Substitution method
Solve a goniometric equation: sin4 θ - 1/cos² θ=cos² θ - 2
- School club The sports club at school is attended by boys and three fewer girls than boys. How many girls attend the circle?
- Cube The sum of all cube edges is 30cm. Find the surface area of the cube.
- Diagonals of a rhombus 2
One diagonal of a rhombus is greater than the other by 4 cm. If the area of the rhombus is 96 cm2, find the side of the rhombus. - Pilot
How high can the airplane's pilot see 0.001 of Earth's surface? - Isosceles trapezoid
The old father decided to change the top plate of an isosceles-like trapezoid, which has basic dimensions of 120 cm and 60 cm, and a shoulder that is 50 centimeters long. How much does it pay for a new plate and a square meter worth 17 euros?
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