Answer:
2+1=3
Step-by-step explanation:
you just switch the 1 and the 2 around
Answer:
Perimeter is 130r units
Area is n*r^2 square units
Step-by-step explanation:
So, something special happens to perimeter and area if you scale a figure by some factor. let's say you make a figure twice as big, well, the perimeter also gets twice as big. Area though will get 4 times as big. more generally, if you scale a figure by x, the perimeter also scales by x, while the area scales by x^2.
So for this triangle, the perimeter of abc is 30 + 40 + 60, then when you scale them by r the perimeter becomes 30r + 40r + 60r or (30 + 40 +60)r. of course 30 + 60 + 40 is 130 so the perimeter of xyz is 130r
Now for area, the problem just vices us the area as n. Scaling the sides by r makes the area n*r^2. This is for all shapes. If you want to check try on a random triangle, or more easily a square
Answer:
ASA
Step-by-step explanation:
none needed [=
-3n<_15
the "<_" is a "less than or equal to" sign i just couldn't type it how it looks
Answer:
80
Step-by-step explanation:
You know that 20% of the school band are 16 clarinet players, or 16 is 20% of the band.
You can set up the equation 0.2x = 16 and divide both sides by 0.2. You then get that x = 80, so there are 80 kids in the school band.