D. y = 9 because it has a complete zero slope while the y-intercept of the equation is 9, so the equation is y = 9.
Answer:
x = 13.5°
Step-by-step explanation:
Angles 2 + 3 = a straight line, so 180°
180 - 66 = 114 = angle 2
114 = 10x - 21
114 + 21 = 10x
135 = 10x
135 / 10 = x
13.5 = x
Just subtract 622 feet from 486 feet to get the change in elevation. The result will be negative because your friend's house is at a lower elevation than yours.
Now find the mean change in elevation per mile by dividing (486 ft - 622 ft) by 4 miles:
-136 ft
----------- = -34 ft/mile
4 mi
That's mean you gonna multiply
2*8 and 5*15
16/75
Hint: Multiply numerator by numerator and denominator by denominator .
I hope that's help.
