How to work out a ratio?

8 out of 21 instruments in the band are woodwind. if there are 63 instruments in the band, how many more are not woodwinds than woodwinds?

Write an expression for "the product of 6 and q."

Which function forms an arithmetic sequence when x = 1, 2, 3, ... ? f (x) = - x/3 + 5 f (x) = - 2^x f (x) = 2x^2 f (x) = - 3/x + 5

Nadia is selling tickets for a school event. She has already sold 17 tickets. Her goal is to sell at least 100 tickets. Each day she is able to sell up to 10 tickets.

Use the given Functions to answer the question. f (x) = 4x^2 - 3x + 8 g (x) = - 6x^2 - 1 Which expression represents f (x) + g (x) ? 1. - 2x^2 - 3x + 7 2. - 2x^2 + 3x + 9 3. 2x^2 - 3x + 7 4. 2x^2 - 3x + 9

The perimeter of a rectangular wooden deck is 90 feet the decks length l is 5 feet less than 4 times it's with, w. Find the length and width of the wooden deck

The original price of a tractor was $55,000. The value decreases in value at a steady rate of 11% per year. What will the tractor be worth in 8 years? A) $21,651.24 B) $65,487.22 C) $45,591.35 D) $12,536.25

Write two verbal expressions for 2

What's more 12cm or 98mm

Ben sat outside his school in cambridge and made a note of the colour of the first 100 cars that passed 27 of the cars were red. In britain there are around 35 million cars on the road.