Isolating a variable in the formula - math word problems - last page

Number of problems found: 1266

Heron backlaw
Calculate the unknown side in a triangle with sides 39 and 38 and area 438.6.
Demographics
The population grew in the city in 10 years from 30000 to 34000. What is the average annual percentage increase in population?
Right triangle
The legs of the right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle.
Sphere growth
How many times does a volume of the sphere rise if priemer rises 10×?

Lunch for free
Gastro tickets are "free," so they should be retained. Many employees in Slovakia approve of free goods, such as a free gastro ticket per day of work. The company issuing gastro tickets receives a 4.3% fee on the total amount of money spent on tickets. Ca
Crossroads
A passenger car and an ambulance come to the rectangular crossroads, and the ambulance leaves. The passenger car is moving at 39 km/h, and the ambulance is moving at 41 km/h. Calculate the relative speed of the ambulance moving to the car.

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