Answer:
345
Step-by-step explanation:
Answer:
x = y = (15/2)√2
Step-by-step explanation:
You can recognize this as an isosceles right triangle, so x=y. They Pythagorean theorem then tells you that ...
15² = x² + x²
225/2 = x²
√(225/2) = x = √(225·2/4) = (15/2)√2
The solution is x = y = (15/2)√2.
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<em>Comment on isosceles right triangles</em>
It is worth remembering that the ratio of sides of an isosceles right triangle is ... side : side : hypotenuse = 1 : 1 : √2.
Knowing this lets you write down the solution to this problem as ...
x = y = 15/√2
Of course, the denominator of this fraction can be rationalized by multiplying the fraction by (√2)/(√2) to get (15√2)/2 or (15/2)√2.
Answer:
C.
Step-by-step explanation:
On a two-way frequency table, marginal frequency can be obtained by adding the values of each of the two individual rows separately and obtain the total for each; and adding the values of each of the two individual columns separately rows and obtain the total for each. In the end, the column addition of the total of each of the separate two rows and row addition of the separate two columns must be equal at the lower bottom right corner.
Based on the above, option C. is the two-way frequency table that correctly shows the marginal frequencies.
By the pic i would say it 50.5
