X2-4x+9=0 complete the square

I need to write an equation for: ten times the sum of half a number and 6 is 8

Madison must run a mile in no more than nine minutes in order to qualify

If f (x) = x3 - 2x2, which expression is equivalent to f (i) ? -2 + i -2 - i 2 + i 2 - I

4 x + 3 y = 20 2 x + y = 7 4x+3y=20 2x+y=7 if (x, y) = (a, b. (x, y) = (a, b) is a solution to the system of equations above, what is the value of b b?

1 gallon weighs 8.34 pounds, how many ounces per gallon is the water

Given w (x) = 3x+8, find w (2b+6)

A mountain climber ascended 3 4 of a kilometer in 1 12 of an hour. What was the mountain climber's ascent rate in kilometers per hour?

Niki uses 15 litres of water every minute when she has a shower. She uses 100 litres of water when she has a bath. How many litres of water does she save by having a 3 1/2 minute shower instead of a bath?

How long does it takes the earth to complete one full revolution? A. 90 B. 180 C. 365

What are two factors of 36 that add up to 15