IF the estimates are 100% accurate, then the maximum volume of concrete is the product of the maximum dimensions, namely
Vmax=18.32*12.22*0.55=123.13 m^3
and the minimum volume of concrete is the product of the minimum dimensions
Vmin=18.28*12.18*0.45=100.19 m^3
the uncertainty is therefore 123.13-100.19=22.94 m^3
On the practical side, to this uncertainty must be added to
- squareness of the formwork
- evenness of the surface of the crushed stones on which the foundation sits on
- excess of concrete delivered by the truck
- volume of air bubbles trapped in the the concrete, ...
Answer:
The type of method is convenience; he isn't posting advertisements to volunteer(self-selected) and he isn't following an algorithm(systematic), therefore, he's using convenience.
%=percent
percent means parts out of 100
20%=20/100
'of' means multiply
20% of 100 units means
20/100 times 100 units=2000/100 units=20 units
Answer:
2<em>x= 1
/2
y+ 2</em>
Step-by-step explanation:
Solve for x.
<em>2x−y=4</em>
Add y to both sides.
<em>2x−y+y=4+y
</em>
<em>2x=y+4</em>
Divide both sides by 2.
<em>2x
/2 = y+4
/2</em>
<em>x=
1/
2
y+2</em>
Answer:
x = 13
Step-by-step explanation:
m∠ABC + m∠CBD = 180° {linear pair}
3x + 43 + 6x + 20 = 180
3x + 6x + 43 + 20 = 180
9x + 63 = 180
9x = 180 - 63
9x = 117
x = 117/9
x = 13
