A) 20.9
b) (230 + x) / 12 = 22
230 + x = 264
x = 34 years old
Answer:
y=1/5x-3
Step-by-step explanation:
Start by finding the slope:
Slope = (y₂-y₁)/(x₂-x₁)
Now we plug in the coordinates:
Slope = (12-(-3))/(-3-0)=(12+3)/(-3)=15/-3=-5
The slope intercept equation would be
y=mx+b
Slope is m and y-intercept is b. x and y and the x and y-coordinates.
Now we plug in one of the x and y coordinate pairs into the equation:
-3=-5(0)+b
b=-3
So the equation of the line would be
y=-5x-3
<em>But the slope of a perpendicular line is the negative reciprocal of the original equation</em>
So...
y=1/5x-3
Y=7 or 7y tell me if this right
B . Only function g is decreasing on and only f
To answer this item, we let x be the time for the faster plane and h be the distance traveled which is the same for both planes. Distance is calculated by multiplying speed and time. Thus,
(558)(x) = (496)(x + 0.5)
The value of x from the equation is 4.