Don’t click the file above it’s you may get a virus because you could simply just say the answers instead of here’s a file . And the answer is A
9r=3r+6
Subtract 3r from both sides
6r=6
Divide both sides by 6
r=1
Yes all equilateral triangles are congruent. You can prove congruence with two congruent angles and all equilateral triangles will have 60º angles. Which is enough to prove similarity
Answer:
The ratio of boys to girls is 4:5. So let 4x be the number of boys and 5x be the number of girls. Then 4x+5x = 9x is the total number of students. Then the fraction of boys in the class is 4x/9x = 4/9.
