Iwill mark ! a scale drawing of a building is one foot to 1/4 inch. what is the actual length of the building if the scale drawing shows that it is 13 1/2 inches long?

54 ft

Step-by-step explanation:

1 ft               x ft

=

1/4 in           13 1/2 inch

using cross products

1 * 13 1/2 = 1/4 * x

13 1/2 = 1/4 x

times by 4 on each side

4* 13  1/2 = x

change 13 1/2 to and improper fraction ( 13 1/2 = (2*13 +1)/2 = 27/2)

4 * 27/2 =x

54 =x

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!