Answer: Yes, it is a right triangle
Step-by-step explanation:
Use the pythagorean theorem in order to determine whether this triangle is a right triangle. Plug in the values given in the problem (4, 7.5, and 8.5) into this equation (a^2+b^2=c^2). This gives you 4^2+7.5^2=8.5^2, and this equation is valid because 4^2+7.5^2 does equal 8.5^2.
Answer:
y=3.75
x=9.6
Step-by-step explanation:
Solution
The 1st term = 20
Common difference (d) = 15
5th term = a + d(n-1)
= 20 + 15(5- 1) [Here n = 5)
= 20 + 15(4)
5th term = 20 + 60 = 80
The answer is 80.