I’m not sure is D , I’m clueless
PSF: y - y₁ = m(x - x₁)
Standard Form: ax + by = c
Point Slope Form Standard Form
1). y - 3 = -4(x + 8) 2). y = -4x - 29
y - 3 = -4x - 32 + 4x + 4x
+ 3 + 3 ---------------------------------
----------------------------- 4x + y = -29
y = =4x - 29
Hello! :)

Use the exponential rule:

Use this property in this scenario:

Simplify:

Answer:
Step-by-step explanation:
c^2=a^2+b^2-2abcosC
cosC= (a^2+b^2-c^2)/(2ab)
C=arccos[(a^2+b^2-c^2)/(2ab)]
C=arccos(90^2+55^2-50^2)/(2(90)55)
C=arccos(8625)/(9900)
C=29.4 degrees