A line plot with Kelly's lengths of ribbons is shown. She adds another ribbon so that the difference between the longest ribbon and shortest ribbon is 1 1/8 inches.

Question 64 please hel!!

14"  + 3/4" (but already there are two ribbons with that lenght, so probably the is answer is not adding no one more)

Step-by-step explanation:

If we call:

U : the longest ribbon (wich we don't know)

L : the lowest ribbon (wich one could be know, see the plot)

The condition is:

U - L = 1"+1/8" ----> U = L + 1" + 1/8" ---(A)

Calculating L:

Between 14 and 15 there are 8 spaces, then if we call to the long of that tiny space 'p', then:

8*p = 15"- 14" ---> p = (15"-14")/8 ---> p = 1"/8

In the plot, we see what 'L' is three spaces under 14", then:

L= 14" - 3*p = 14" - 3*(1"/8) = 14" - 3/8"

Replacing this result in the (A) expresion:

U = (14" - 3/8") + 1" + 1/8" = 14"+1" -3/8" + 1/8" = 14" + 6/8" = 14" + 1/4"

Then: U = 14" + 3/4"

nlgqer

step-by-step