X+_=-7 and x+_=-4. Add 7 and 4 to each side to get (x+7) and (x+4). You want to FOIL these next, so (x+7)(x+4) = x^2+4x+7x+28. Now you just need to combine like terms, and BAM. There's your answer.
You should get something like x^2+11x+28 (:
Answer:
D
Step-by-step explanation:
So we want to find<em> θ. </em>We are already given the hypotenuse and the side length opposite to <em>θ. </em>Therefore, we can use the trig function sine to find <em>θ. </em>
Recall that:
Plug in 10.2 for the opposite side and 15 for the hypotenuse:
Solve for <em>θ. </em>Use a calculator:
The answer is D.