So if you wanna know how long Marsha did you should multiply 1/10 by 5 so you will have: 5/10 which is equal to 1/2 mile :)))
i hope this is helpful
have a nice day
A. 3^n 3^20
b.N^n N^20
c.12^n 12^9
d.237^n 237^4
Answer:
5 + 8y
Step-by-step explanation:
hope this helps, pls mark brainliest :D
Begin with cos(θ) = 5/13, θ in Quadrant IV
you should distinguish the 5-12-13 right-angled triangle
and then cosØ = adjacent/hypotenuse
x = 5, r = 13 , y = -12, since Ø is in IV
and sinØ = -12/13
also tan(ϕ) = −√15 = -√15/1 = y/x and ϕ is in II,
y = √15 , x = -1
r^2 = x^2 + y^2 = 15+1 = 16
r = 4
sinϕ = √15/4 , cosϕ = -1/4
you must know that:
cos(θ − ϕ) = cosθcosϕ + sinθsinϕ
= (5/13)(-1/4) + (-12/13)(√15/4)
= -5/52 - 12√15/52
= (-5-12√15)/52
