De (x - 5)2 = (5x - 3)2 = (x + y)2 =
1 answer:
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The other parallel side is 44 m
Step-by-step explanation:
Let us revise the formula of the area of a trapezium
, where
and
are its parallel bases
- h is its height (The distance between the two parallel bases)
∵ The area of a trapezium is shaped field is 480 m²
∴ A = 480 m²
∵ The distance between two parallel sides is 15 m
∴ h = 15 m
∵ One of the parallel side is 20 m
∴ = 20 m
We need to find
Substitute all these value in the rule of the area below
∵
∴
- Multiply the two sides by 2
∴
- Divide both sides by 15
∴
- Subtract 20 from both sides
∴
The other parallel side is 44 m
Learn more:
You can learn more about trapezium in brainly.com/question/7287774
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Answer:
Step-by-step explanation:
Given that the weights of bags filled by a machine are normally distributed with a standard deviation of 0.055 kilograms and a mean that can be set by the operator.
Let the mean be M.
Only 1% of the bags weigh less than 10.5 kilograms
i.e. P(X<10.5) = 0.01
corresponding Z value for P(Z<z) = 0.01 is -0.025
i.e. 10.5 = M-0.025(0.055)
Solve for M from the above equation
M =
Rounding off we get
10.50 kgs
Mean weight should be fixed as 10.50 kg.