27. find the unit rate of 1400 words per 20 minutes.

the rate is 70 words per minutes.

Step-by-step explanation:

1400 ÷ 20 = 70

70 words per minute

Step-by-step explanation:

the problem is 1400 words ÷ 20 minutes

or 1400/20

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 20

which gets you 70/1 or 70

only 10/60 isn't equivalent

hope this : )

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)