C is a vertical angle which the vertical side is corresponding to the vertical side of x°.
105°+54°+y°=180°
159°+y°=180°
y°=21°
Meaning, x=21°.
Answer:
y = (-1/4)x + 9/4
Step-by-step explanation:
2y = 8x - 6
So, y = 4x - 3 (Slope = 4)
Slope of perpendicular line = -1/4
Equation of line: y-3 = (-1/4)(x-(-3))
y-3 = (-1/4)x - 3/4
y = (-1/4)x + 9/4
Cost Price = $60
Markup = 25% x $60 = 0.25 x 60 = $15
Sales Price after markup = $60 + $15 = $75
Discount = 20% x $75 = 0.2 x 75 = $15
Sales Price after discount = $75 - $15 = $60
Sales Tax = 6% x $60 = 0.06 x 60 = $3.60
Sales Price with Discount after tax = $60 + $3.60 = $63.60
Answer: $63.60
Her speed was 62.5 miles per hour.
