Unformatted text preview: @ Exertise Score: i of ‘1 pt Assignment Score: 79% (24.5 of 3i'pts) 31 of.31 to A roofrises 0.7 feet vertically and 9.8 feet horizontally. What is the grade ofthe roof? Aroofrises 2.4 feet vertically and 8.2 feet horizontally. What is the grade ofthe roof? The grade of the roofis 25/0.
(Round to the nearest percent as needed) To ﬁnd the grade ofthe roof, you Simply ﬁnd the slope of the roof and express it as a percent.
Recall that to End the slope, rn, you divide the change in y by the change in X. rise
In other words, rn= —. Now, apply the deﬁnition of slope.
rn= E =5 0.29 (rounded to hundredths) Now, express the slope as a percent. To convert 0.29 to a percent, multiply 0.29 by 100 and
attach a percent sign. 24
8.2 The grade ofthe roofis 29% Question is complete. A'II paid: showing
': Question is complete. Mm | W
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- Fall '09