Answer:
615079
Step-by-step explanation:
This is the answer for A
Use the law of cosines. Let 
be the distance between the docks, which forms a third leg of a triangle for which the angle opposite it has measure 45 degrees. The other two legs have lengths 400 ft and 500 ft. So
The height of the book is 18 inches tall.
<h3>How to calculate the height?</h3>
The width of an image of a book shown on a website = 1.5 inches
The length of the book shown on the website = 3 inches
The actual width of the book = 9 inches
Scale of the book image = 1 inches = 6 inches
The actual heigth of the book:
= 3 × 6
= 18 inches.
The actual book is 9 inches wide and 18 inches tall.
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An image of a book shown on a website is 1.5 inches wide and 3 inches tall on a computer monitor. The actual book is 9 inches wide
Answer:
12
Step-by-step explanation: we will use pathogorean theorem because there is a right triangle. a^2+b^2=c^2
We know BE=9 we need AE to find AB
You can make another triangle on the end. AD=28 - 12 (BC) = 16
16/2 = 8 so AE= 8
8^2+9^2=c^2
145=c^2
Square root of 145=c
C=12.04
