Saeed is estimating the height of his office building. The actual height of his office building is 12.2 m . Saeed's estimate is 13 m . Find the absolute error and the percent error of Saeed's estimate. If necessary, round your answers to the nearest tenth.

absolute error =

percent error =

What is the value of the digit 1 in the number 13?

Find an equation for the linear function which has slope -10 and x-intercept -7

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?