Answer:
a) 400 meters
b) 67 meters
c) 124.790 meters
Step-by-step explanation:
Given data :
g1 = - 0.4 %
g2 = +2 %
change of grade of sag curve ( a ) = 0.6 %
Elevation of PVI ( h2 ) = 124.80 m
a) compute the length of the curve using the relation below
a = . hence ; L = ( g2 - g1 ) / a
L = ( 2 -(-0.4 ) / 0.6
= 2.4 / 0.6 = 4
= <em>400 meters</em>
<u>b) compute the elevation of the lowest point of the curve</u>
slope of the vertical curve = 0
0 = 2ax l + b
= 2( ) x + g1
∴ x = = ( 0.4 * 4 ) / ( 2 + 0.4 ) = 1.6 / 2.4 = 0.67 stations
therefore x ( elevation of the lowest point ) = <em>67 meters</em>
C<u>) compute the elevation at Sta. 12 + 125.60</u>
Given that the rate of change of elevation is the same at all points
= = 0.4 -------- ( 1 )
where h2 = 124.80
h1 = ? ( elevation of p0 ) at 12 + 125.60
PVI = 12 + 150.06
p0 = 12 + 125.60
back to the above equation
- h1 = 0.4 ( PVI - P0 ) - h2
= 0.4 ( 12.150 - 12.1256 ) - 124.80
-h1 = -124.790
hence h1 = 124.790 m
Answer:
My answer is letter d
Step-by-step explanation:
Sorry when im wrong
Answer:
<h2><u><em>3.82165605096 Ft.</em></u></h2>
Explanation:
- Circumference ÷ π = Diameter
12 ÷ 3.14 = Diameter
- 12 ÷ 3.14 = 3.82165605096
3.82165605096 Ft. Is The Diameter
Answer:
2(x + y)² - 9( x + y ) -5 = 0
⇒2(x + y)² - 10 (x+y) +1(x+y) -5 = 0
⇒2(x+y)(x + y - 5 ) + 1(x + y -5 ) = 0
taking (x + y -5 ) common ,
⇒(x + y -5 )[2(x + y) + 1] =0
⇒(x + y -5)(2x + 2y +1) =0
hope , you got this
Answer:
-4
Step-by-step explanation:
so coefficient of y^3=-4