Answer:
1) They are similar
2) 45 ft
Step-by-step explanation:
1) similar because both triangles have congruent interior angles
2) 75/35 = AB/21
AB = 45 ft
So r+c=42
c=4+r
subsitute c=4+r for r in r+c=42
r+4+r=42
add like terms
2r+4=42
subtract 4 from both sides
2r=38
divide both sides by 2
r=19
rob=19
subsitute r=19 for r in c=4+r
c=19+4
carly=23
To get the answer, multiple 20 by 0.45= $9 than subtract 9$ from $10 which equals $1.
Answer:
45
Step-by-step explanation:
A whole circle is 360 so if you divided that by 8 you get 45
Solve for any of the variables; for instance, 
:
Then
Let 
; then the intersection is given by the vector-valued function
or
