To solve the equation −x − 3 = x2 − 2x− 15, you could graph of the following system.
y = −x − 3
y = x2 − 2x − 15
Use the graph of this system to identify all solutions of −x − 3 = x2 − 2x − 15.
A) -7
B) -3
C) 0
D) 4

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°