Answer:
V = π /2 volume units
Step-by-step explanation:
Volume of y = √x bounded by y = x and y = 1
y = √x
limits of integration ( see Annex )
By simple inspection limits of integration are x = 0 to x = 1
or y = √x and y = x
solving these two equations
x = 0 y = 0 x = 1 y = ± 1
V = ∫ π*f(x)²*dx
V = π * ∫₀¹ x*dx = π * x²/2 |₀¹
V = π * (1/2) - 0
V = π /2 volume units
Answer:
Step-by-step explanation:
let the numbers be 7x,y,y,y.
7x+3y=36
3y=36-7x
numbers are 7×3,5,5,5
or 21,5,5,5
21×5×5×5=2625
Answer:
see explanation
Step-by-step explanation:
the exterior angle = 180° - interior angle
(17)
exterior angle = 180° - 144° = 36°
The sum of the exterior angles of a polygon = 360°
Hence the number of sides n is
n = = 10
(18)
exterior angle = 180° - 156° = 24°
n = = 15
(19)
exterior angle = 180° - 160° = 20°
n = = 18
In the following 2 questions we are using that the sum of the interior angles of a quadrilateral is 360°
(20)
summing the angles and equating to 360
2x + 15 + 3x - 20 + x + x + 15 = 360
7x + 10 = 360 ( subtract 10 from both sides )
7x = 350 ( divide both sides by 7 )
x = 50
∠J = 2x + 15 = 100 + 15 = 115°
∠K = 3x - 20 = 150 - 20 = 130°
∠M = x = 50°
∠N = x + 15 = 50 + 15 = 65°
(21)
6x - 4 + 2x + 8 + 6x - 4 + 2x + 8 = 360
16x + 8 = 360 ( subtract 8 from both sides )
16x = 352 ( divide both sides by 16 )
x = 22
∠R = ∠T = 6x - 4 = 132 - 4 = 128°
∠S = ∠U = 2x + 8 = 44 + 8 = 52°