Answer:
x = 1.09 , −
0.46
Step-by-step explanation:
→ Factorise 8x² - 5x - 4
Not possible by factorisation
→ Substitute values into quadratic formula
x = 1.09 , −
0.46
Answer:
12
Step-by-step explanation:
It is worthwhile memorizing the ratios of legs in a 30°–60°–90° triangle. Shortest to longest, the ratios are ...
1 : √3 : 2
Then the sides marked will have the ratio ...
6 : x = 1 : 2 = 6 : 12
x = 12
_____
You can also get there using trigonometry.
cos(60°) = 6/x
x = 60/cos(60° = 60/0.5
x = 12
Answer:
87
Step-by-step explanation:
the slope is very easy you can solve it in easy way all you have to do is give me your phone
Answer:
17π/2 square units
Step-by-step explanation:
The arc length is related to the angle and the radius by ...
s = rθ . . . . . r is the radius; θ is the central angle in radians, s is the length
The angle 20° is equivalent to (20°)×(π/180°) = π/9 radians. Then the radius can be found from ...
π/3 = r·π/9
3 = r . . . . . . . . . multiply by 9/π
The area of a sector is ...
A = 1/2r²θ
Here, the shaded sector has an angle measure in radians of 2π less the angle of the unshaded sector, π/9. That is, θ = 2 -π/9 = 17π/9. The area of the shading is ...
A = 1/2(3²)(17π/9) = 17π/2 . . . . square units
Answer:
(5y)x
Step-by-step explanation:
the commutative law of multiplication=ab=ba, a(bc)=c(ab)
(5x)y=(5y)x=5(xy)
