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Sub 25
Ques. 29
Solve:
4^1-x = 8
Sub 25
Ques. 20
(x^2 + 9)^1/2 = 5
Sub 25
Ques. 7
The sum of the length, width, and height of a rectangular box is 75 cm. The length is twice the sum of the width and height. The width exceeds the height by 5 cm. Find the dimensions.
Sub 25
Ques. 6
David paid $9.50 for some 15 cent, 25 cent, and 45 cent stamps. He bought 38 stamps and the number of 25 cent stamps was 8 more than twice the number of 45 cent stamps. How many of each type did David buy?
Sub 25
Ques. 5
Solve this system:
1/r + 3/s - 2/t = 1
2/r + 3/s - 4/t = 1
1/r - 6/s - 6/t = 0
Sub 24
Ques. 31
The sum of two numbers is 16, and the sum of their squares 146. Find the numbers.
Sub 24
Ques. 29
The mass of a metal cylinder varies jointly as its height and the square of the radius of its base. One cylinder has a mass of 120 g. Find the mass of a second cylinder made of the same metal, 3 times as high, and having one-half the base radius of the first.








