Chingle fors--8.06.10 in a city the monthly rent(r) for an office space is directly proportional to the size of the office. If the rental for (A)zeo square meters is 50,000 month then. what is the rent for a 400 square meters office?

A5.25 cm tall light bulbbis place at a distance of 55.0 cm from a concave mirror

83 is the estimated product of what expression?

Some chairs in a class are arrange in 3 rowsthe ratio of the number of chairs in the first row to the number of the chairs in the second row to the number of chairs in the third row is 3: 4: 5 the second row has 20 chairs (a) the total of chairs in the row (b) the number of the chairs in the first row