Answer:

Step-by-step explanation:
The first step is to ensure that all of the fractions have a common denominator.

Hope this helps!
Complete question is;
A 21 ft ladder is leaning against a tall wall with the foot of the ladder placed at 7 feet from the base of the wall and the angle of elevation is?
Answer:
θ = 70.5°
Step-by-step explanation:
The angle of elevation simply means the angle that the ladder makes with the ground. Let's call this angle θ.
I've attached a diagram showing the triangle made by this ladder and the wall.
From the attached diagram, we can see the triangle formed by the ladder and the wall.
We can find the angle of elevation θ from trigonometric ratios.
Thus;
7/21 = cos θ
cos θ = 0.3333
θ = cos^(-1) 0.3333
θ = 70.5°
$50x2.2%
50x0.022=1.1
$50-$1.1=$48.9
Answer:
Letter c po sorry nasa daan po kasi ako kaya di po ako makakapag explain
Step-by-step explanation:
Sorry po talaga pero sigurado po ako sa sagot ko
The equation: n - 4 = -15
Now let's solve our equation for n.
n - 4 = -15
Add 4 to both sides.
n = -11