The mean of the numbers 15, 21, 17, 26, 18 and 29 is 21. Calculate the standard deviation.

9

6

5

0

A woman received a discount of 20% on a piece of cloth she purchased from a shop. If she paid $525.00, what is the original price?

$675.25

$660.25

$656.25

$616.25

If tan y is positive and sin y is negative, in which quadrant will y lie?

First and third only

First and second only

Third only

Second only

Which of the following is not a sufficient condition for two triangles to be congruent?

AAS

SSS

SAS

SSA

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