Answer:
75%
Step-by-step explanation:
Let x be the percentage for sports club members.
x% of 20 = 15
x/100 x 20 = 15
x/5 = 15
x = 75
You use the quadratic formula:
2x {}^{2} - 3x = 5
2x {}^{2} - 3x - 5 = 0
x = \frac{3 + - \sqrt{9 -4(2)( - 5)}}{2 \times 2}
x = \frac{3 + - \sqrt{49} }{4}
x = \frac{3 + 7}{4} \: and \: x = \frac{3 - 7}{4}
x = \frac{5}{2} \: and \: x = - 1
The correlation coefficient r of the data set is <em>-0.28</em>
Answer: 2,673
Step-by-step explanation:
450% × 594 =
(450 ÷ 100) × 594 =
(450 × 594) ÷ 100 =
267,300 ÷ 100 =
The square root of 81 is 9
