If his water to cement ratio is 20 to 30, this means that if he uses 20 liters of water, he'd use 30 liters of cement.
The total mixture would then be 20+30=50 liters.
and the water would be 20/50=0.4 or 40% of the total mixture.
Answer:
40⁰
Step-by-step explanation:
<em><u>Main</u></em><em><u> </u></em><em><u>principles</u></em><em><u>:</u></em>
1.Alternate angles equal
2.Vertically opposite angles are equal
If angle 2 is 40⁰, then using the second principle,angle 3 is also 40⁰
Then, using the first principle,(alternate angles/angles that form any variation of "z"), angle 6 is also 40⁰.
There are other ways to do this like using co-interior angles, straight angles and other methods, these are the easiest to understand
The mean average difference is not that important, the mean is the only information you need to work out which one has the most words per page. I think the answer is C
Answer:
breadth = 10 cm
length = 13 cm
Step-by-step explanation:
so,
perimeter = 46cm
2(l+b) = 46cm
or, 2(3+b+b) = 46cm ( because l = 3+b)
or, 2(3+2b) = 46cm
or, 6 + 4b = 46cm
or, 4b = 46cm - 6
or, 4b = 40cm
or, b = 40/4 cm
so, b = 10 cm
now,
l = 3cm + b
l = 3 cm + 10cm
= 13cm
Answer:
a) P(0) = 0.6824
b) P(1) = 0.2608
c) P(2) = 0.0498
d) P(3) = 0.00635
Step-by-step explanation:
Number of units (n) in the data, n = 280
Total number of events, k = 107
The probability using Poisson probabilities is calculated using the formula;
P(x) = 
here,
Poisson parameter, λ = 
Thus,
a) P(0) = 
or
P(0) = 0.6824
b) P(1) = 
or
P(1) = 0.2608
c) P(2) = 
or
P(2) = 0.0498
d) P(3) = 
or
P(3) = 0.00635
