Answer:
The missing data value is 147
Step-by-step explanation:
If a point lies 3 standard deviations away from the mean, then the data point can be determined by simplifying the expression; μ±3σ. Where μ is the mean and σ the standard deviation. In this case this would be; 120±3(9)
Answer:
positive
Step-by-step explanation:
because don't have the "-"
Answer:
The legs of this triangle are both 3cm.
Step-by-step explanation:
Since this triangle is isosceles, the two unknown sides have the same length. Use Pythagorean Theorem because it is a right triangle. See image.