Given:
a ladder with three steps.
top step is 45° angle.

45° / 3 steps = 15°

So, top step is 45°. Middle step is 30°. Bottom step is 15°. Ground is 0°

The photographer would shout on the bottom step at an angle of 15°.

4 0

3 years ago

What is an equation in point- slope form for the line perpendicular to y= 3x-4 that contains (7,2)?

3241004551 [841]

Answer:

y - 2 = - $\frac{1}{3}$ (x - 7)

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x - 4 ← is in slope- intercept form

with slope m = 3

Given a line with slope m then the slope of a line perpendicular to it is

$\frac{m}{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{3}$

The equation of a line in point- slope form is

y - b = m(x - a)

m is the slope and (a, b) a point on the line

Here m = - $\frac{1}{3}$ and (a, b) = (7, 2), thus

y - 2 = - $\frac{1}{3}$ (x - 7) ← equation of perpendicular line

3 0

3 years ago

The safety inspector notes that Ray also needs to plan for a vertical ladder through the center of the coaster's parabolic shape

wariber [46]

f(x) = 3(x^2 + 3x) + 12 = 3(x+1.5)^2 +5.25

So you can see the vertex is at (0,5.25) when x = -1.5
<span>The axis of symmetry then lies in x = -1.5</span>

4 0

2 years ago