Use a and c because you need to know the description and relationship between a-b to get your end result
Answer: " x = 25 " ; "x = -25 ;
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or; write as: " x = <span>± 25 " .
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To find 15% of 130=
130 x 0.15=
19.5
Answer:
If the rational number is ab then, te reciprocal is ba
Step-by-step explanation:
Suppose that rational number is ab
Then, the reciprocal of that number is ba
here is the data set for the complete question
x: 18 21 19 21 20 21
y; 2 14 5 6 18 18
Answer:
B. 0.652
Step-by-step explanation:
x y rank of x rank of y d d²
18 2 1 1 0 0
21 14 4 4 0 0
19 5 2 2 0 0
21 6 4 3 1 1
20 18 3 5.5 -2.5 6.25
21 18 4 5.5 -1.5 2.25
∑d² = 8.5
rs = 1 - 6[∑di² + ∑m(m²-1)]/n(n²-1)
= 1 - 6[8.5 +{3(3²-10/12 + 2(2² - 1)/12}]/6(6²-1)
= 1 - 0.348
= 0.652
therefore option b is the right answer.
