7a construction company orders tile flooring for the kitchen and three bathrooms of a new home. the
kitchen floor measures 48 square feet. two bathrooms have floors that each measure 30 square feet.
the third bathroom floor measures 42 square feet. if the tile costs $2.39 per square foot, what is the
least amount of money, to the nearest cent, the company spends on tile for all three bathrooms?
8 zeek makes a picture frame in shop class like the one shown. the frame is designed for a picture
measuring 5 inches by 7 inches. the frame is 2-inch wide on all sides. how many square inches of
wood does zeek use to make the frame?

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.

isocolese triangle

we know that the line connect a and b is the hyptonuse

so first find the hypotonuse length using the distance formula, call the length c

since it is an isocolese triangle, the lengths of the legs are the same

using pythagorean theorem,

in this case, a=b since isocolese triangle so we get

or

we can find c so we can find the distances

we know that if we draw 2 circles, each has center at a and b, and find where they intersect, we can the 2 possible locations for c

if a has center at (xa,ya) and b has center at (xb,yb), then we can solve where

and

intersect to find where they intersect

i'm not going to put an example because i have to go to class. i hope this explanation is enough

10+4√2 is the answer. i dont have the time to explain.