A survey crew has laid out similar triangles to find the distance across a small lake.
creen
1-02
240 ft
30 ft
creen SI
1-02...5.1
40 ft
30 ft
240 ft
creen Sho
-02...55.1
What is x, the distance across the lake?

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

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?