The sum of ages of Silas and John is 50 years. In five years time, the age of John will be four times the age of Silas now. How old is each boy?​

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

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