If the correlation between x and y is 0.6 covariance is 27, variance of y is 25, then what is the variance of x?
345 = √2704 ÷ (?% of 104) + 7 3
Simplify the following expression
4567.89 - 567.89 - 678.89 = ?
756 + 432 – 361 + ? = 990
36% of 640 – 12.5% of 352 + 25% of 640 = ? – 48% of 432
84% of 8400 + 42% of 6120 =?
(72 × 10 ÷ 20) × 10 = ?
(5/8) × 480 + (3/9) × 450 = (5/2) × ?
(13)2 - 3127 ÷ 59 = ? x 4
5490 ÷ 15 × 18 + 450 = ?
