Answer:
option C is correct.
Step-by-step explanation:
The area of triangle with sides a, b and c can be found by using formula
We are given:
a= 20
b=30
c=40
<u>Finding s:</u>
Putting values in the formula and solving:
Now, <u>Finding the area</u>:
Putting values in the formula and solving:
So, option C 290.5 units^2 is correct.
Answer:
1 1/2 > - 4 1/2 and Manuela scored more points against the Canada Moose than against the China Dragons.
Answer:
<u>It takes the hose 300 hours to fill the pool</u>
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Step-by-step explanation:
The hose can fill the pool at a rate of 0.5 gallons per second, which means that it can fill the pool at a rate of 1 gallon per 2 seconds. It needs to fill 9000 gallons of water, so assuming the ratio remains 1:2, it takes the hose 18000 (9000*2) seconds to fill the pool completely.
However, it is important to note that we have to answer in terms of hours. There are 60 seconds in an hour, so 18000 seconds is equal to <u>300 hours</u> (18000/60).
Answer: CI = (0, 8)
Step-by-step explanation: Confidence interval for difference between mean is given below as
Lower limit
= (x1 - x2) + margin of error
Upper limit
= (x1 - x2) - margin of error
where x1 - x2 = 8 and margin of error = 8
For lower limit,
= 8 - 8 = 0
For upper limit
= 8 + 8 = 16
Hence CI = (0, 8)
It's 21 square units. If you map it on a complex plane (x-axis is real numbers, y-axis is imaginary numbers) you'll see that the sides of the rectangle is 3 and 7 which multiply to 21.
