The question is about types and number of soultions so you must use b^2-4ac which is the experssion under the root in the quadratic formula
so
if
b^2-4ac=0 then there is one real soultion
if
b^2-4ac<0 then there are two imaginary soultions that differ in the sign between them
if
b^2-4ac>0 then there are two real soultions
so a polynomial is written in the form
ax^2+bx+c=0
so a=-4
b=-4
c=-1
so b^2-4ac=16-16=0
so one real soultion is the answer you are looking
type:real
number:1
Answer:
6.861
Step-by-step explanation:
Here are some words to make at least 20. Answer attached
Answer:
Step-by-step explanation:
Draw a picture.
θ = 81.7°
tanθ = height/121.6
height = 121.6tanθ ≅ 833.5
The building is 833.5 ft high.
:::::
When shadow is 2×121.6 = 243.2 ft long, tanθ = height/243.2
θ = arctan(height/243.2) ≅ 73.7°
