Find the real solutions, if any, of the equation. Use the quadratic formula.x2 + 7x + 3 = 0

A.
B.
C.
D.


Answer: D

Mathematics

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Provide an appropriate response.Change  to .

A.
B.
C.
D.

Mathematics

Provide an appropriate response.A hiker falls to a ledge. The rescue workers want to know how far down the cliff the hiker is located. One worker finds angles of elevation to the hiker and to the second rescue worker at the top of the cliff. Determine the distance between the ledge that the hiker is on and the top of the cliff. 

A. 77.3 ft B. 45.5 ft C. 40.5 ft D. 72.4 ft

Mathematics

Solve the proportion. = 

A. - 
B. -24
C. 105
D. - 

Mathematics

Expand, where i2 = -1.(-1 + i)3

A. 1 B. -1 - 3i C. 4 + 4i D. 8

Mathematics