Answer:
it should be A, B, D, and E
Step-by-step explanation:
hope I could help
Answer:
-80
Step-by-step explanation:
We can write the quadratic as
ax^2 + bx+c
4x^2 +8x+9
a=4 b = 8 c=9
The discriminant is
b^2 -4ac
8^2 - 4(4)(9)
64 - 144
-80
A=P(1+r/100)^n
A=500(1+4/400)^24
A=500(1.01)^24
A=634.87
Answer:
θ = 30°
Angle of elevation is 30°
Step-by-step explanation:
Given;
Height of wall w = 10 ft
Length of ramp l = 20 ft
Angle of elevation = θ
Applying trigonometry;
Sinθ = opposite/hypothenuse
Where;
Height of wall w = opposite (it's opposite the angle of elevation)
Length of ramp l = hypothenuse
Sinθ = w/l
θ = arcsine (w/l)
Substituting the values;
θ = arcsine (10/20)
θ = arcsine (0.5)
θ = 30°
Angle of elevation is 30°
Answer:
2
Step-by-step explanation:
11 and 23