8packs of baseball cards 3 fewer packs of hockey cards than football cards 17 packs in all

Number of packs of football cards = 6 , hockey cards = 3 , baseball cards = 8

Step-by-step explanation:

Number of packs of baseball cards = 8

Let the number of packs of football cards = x

Number of packs of hockey cards = x - 3

Total number of packs = 17

=> 8 + x + (x-3) = 17

=> 8 + 2x -3 = 17

=> 2x = 17 - 5 = 12

=> x = 12/2 = 6

So the number of packs of football cards = 6

Number of packs of hockey cards = 6 - 3 = 3

Validation:

Adding all the packs together:

Baseball + Hockey + Football

= 8 + 3 + 6 = 17

This satisfies the requirement that total number of packs is 17.

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: