Lesson 1-7
date
making a histogram
the table below shows the ages of the u. s. presidents at
the ages of the u. s. presidents at their inaugurations.
use the data to make a histogram. then use your histog
a histogram. then use your histogram to answer the question
ages of u. s.
at inaug
ages of u. s. presidents at inauguration
42 43 45 46 47 47 48 49 49 50 51
51 51 51 51 52 52 54 54 54 54 54
55 55 55 56 56 56 56 57 57 57 57
58 60 61 61 61 62 64 64 65 68 69
r& r
number of presidents
wa

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

the answer is b