There were 8 rows of picture frames at the store. there are 7 picture frames in each row. twelve picture frames are sold. how many picture frames are left at the store?

For this case we have The following data:

To know the amount of total frames in the store, we make a rule of three:

7frames ------> 1row

x ----------------> 8rows

Where x represents the number of frames in 8 rows, so, we have:

Thus, there is a total of 56 frames in the store.

Now, if 12 picture frames are sold, then:

Where and represents the number of frames of photo frames left in the store, after selling 12, subtracting is:

So, there are 44 frames left in the store.

44 frames

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet