Drew has 2/3 of his book for Language Arts class. If he has read 80 pages so far, how many pages are in his book? Please list how you got the answer.

120

Step-by-step explanation:

80 is 2/3 of Drew's book

80 divided by 2 is 40

divided by 2 to find 1/3 of the book

40 * 3 = 120

3 is the whole

120 is the total amount of pages in the book

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°