The sum of 9 and x into an algebraic expression

86 is 45% of what number?

An express train travels 90 kilometers per hour. A local train takes 2.5 hours longer to travel the same distance at 50 km per hour. How far apart are they?

What is the standard form of this function? f (x) = (x - 2) 2 + 6 A. f (x) = - x2 - 8x + 10 B. f (x) = - x2 - 6x + 10 C. f (x) = x2 - 8x + 10 D. f (x) = x2 - 4x + 10

In a right triangle the acute angles measure x+15 and 2x degrees. what is the measure of the larger acute angle of the triangle? 15, 25, 40, 50

Find two factors that would give a product of 0.22

What is the difference between 128.04 and 8.287?

You need to buy edging to put around a flowerbed. If the flowerbed is 13 feet wide, how much do you need? A) 20.4ft B) 39ft c) 40.8ft D) 132.7 ft

What do 10n represent in p (n) = 10n-1200

A container holds 21 spoons and 27 forks. What is the ratio of spoons to the total number of utensils in the container? A. 7 to 9 B. 7 to 16 C. 9 to 7 D. 16 to 9

Sridhar has garden in the shape of square the area of garden is 576 sq m around the outside of the garden he built path of 3 m wide what will be the area of the area of the garden including the path?