All of the following proportions are equivalent except

a/b=c/d

b/a=d/c

a/d=c/b

a/c=b/d

1.29 divided by 1.25 =

Niles bought 4 packs of baseball cards. He also spent $14 for a notebook to hold the baseball cards. He spent a total of $23. Niles wrote and solved the equation 4x + 14 = 23 to find the cost of each pack of baseball cards.

You are planning to use a ceramic tile design in your new bathroom. the tiles are blue-and-white equilateral triangles. you decide to arrange the blue tiles in a hexagonal shape as shown.

Find (f+g) (x) for the following functions F (x) = 14x*2+8x+12 G (x) = 9x+4

Marcos is walking his dog along an 8 mile trail. He has walked 4 miles. How many miles does he have left to walk?

What is the x-intercept of the line with the equation y = 1/2 x-3

The half life of ^134Ba is 28.7 hours. how much of a 16.2 sample of 134 Ba will be left after 60.00 hours

WXY is congruent to CBA, If

The school football team needs to raise at least $850 to buy new practice equipment. The team received a donation of $125 and also earns $4 per ticket sold.

Describe when to use a series and when to use an equation. For example, when would you use: f (x) = 3x+5 and when would you use: score = 2 + 3n (where n is 1, 2, 3 ...)