Answer:
B
Step-by-step explanation:
The perimeter is the sum of the 3 sides of the triangle.
Sum the 3 sides and equate to 60, that is
2y + 1 + 3y + 5 + 7y = 60, that is
12y + 6 = 60 ( subtract 6 from both sides )
12y = 54 ( divide both sides by 12 )
y = 4.5
Thus
2y + 1 = 2(4.5) + 1 = 9 + 1 = 10 in
3y + 5 = 3(4.5) + 5 = 13.5 + 5 = 18.5 in
7y = 7(4.5) = 31.5 in
7.5 percent times 360( angle of a circle). The answer is 27°
|-8| - (5 + 2)2
8-(7)2
8-14= -6
Follow order of operations
Answer:
3/15 of Mike's fish are damselfish
Step-by-step explanation:
The easiest way to solve this problem is to create a common denominator for the 2/5 and the 1/3.
The common denominator for these two fractions is 15. (5 * 3 = 15)
2/5 = 6/15 (multiply both the 2 and the 5 by 3 to get 6/15)
The problem then says that of the remaining fish, 1/3 of them are damselfish.
If you subtract 6/15 from 15/15, you get 9/15. (15 - 6 = 9)
1/3 of the remaining 9/15 fish is 3/15 fish. (1/3 of 9 = 9/3 = 3)
So, 3/15 fish are damselfish.
Answer: -12 + (4/5) + 31 = 18.2