Answer:
AB ≈ 6.53
Step-by-step explanation:
using the cosine ratio in the right triangle
cos40° =
=
=
( multiply both sides by AB )
AB × cos40° = 5 ( divide both sides by cos40° )
AB =
≈ 6.53 ( to the nearest hundredth )
Answer:
174 m/s
Step-by-step explanation:
Formula: velocity = frequency x wavelength
V = 2 x 87
V = 174
Hope that helps!
Answer:
I think it would be C
Step-by-step explanation:
You use distributive property:
5(x+3)
5 times x =5x
5 times 3 = 15