Write the exact value of the side length of a square with an area of

1. 100 square units.
2. 95 square units.
3. 36 square units
4. 30 square units

If the exact value is not a whole number, estimate the length.

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

If value of cos330° is √3/2 then find tan165°.

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?