hi, i wrote down the correct way how to do the formula for questions 5 and 8... im really sorry but i dont really know to explain step by step over just writing so you can just look at the pictures and take whatever you can from them. good luck
Answer:
A is correct
Step-by-step explanation:
Here, we want to write an inequality
If the water level drops by 14 feet
what this mean is that we are subtracting 14 from the original level L
Thus, we have
L-14
Higher than 20 means that we have;
L-14 > 20
L > 20 + 14
L > 34
<span>If Ms. Lund lives in an area where the cost of living is low, $42,000 a year over a twenty-five year period could allow her to live frugally, save, invest, and now in her forties be able to cash in some of her investments to buy the house and car of her dreams. At the same time, it would be the course of prudence to bring in an outside auditor.</span>
<h3>
Answer: Choice D. 8m, 9m, 10m</h3>
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Explanation:
If a = 8 and b = 9 are the two legs of a triangle and c = 10 is the hypotenuse, then
a^2 + b^2 = c^2
8^2 + 9^2 = 10^2
64 + 81 = 100
145 = 100
We get a false equation as 145 and 100 are two different values. So the original equation is false when (a,b,c) = (8,9,10)
By the converse of the pythagorean theorem, we have proven that this particular triangle is not a right triangle
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Contrast this with something like choice A where we have a = 3, b = 4, c = 5 leading to
a^2 + b^2 = c^2
3^2 + 4^2 = 5^2
9 + 16 = 25
25 = 25
we get a true equation so a triangle with sides 3,4,5 is a right triangle. Choices B and C follow a similar path.
Area of sector
so the area = 37.71 square metre
