I would say B. By multiplying the first equation by -5, you create -5y. If you add that to the second equation, your cancelling out the 5y term, and get a new equation with only z and a constant.
Since the triangle is isosceles, the angles that are not on the 87 are both equal.
The other 2 angles can be solved like this
2x + 87 = 180
2x = 180 - 87
2x = 93
x = 93/2 = 46.5 degrees or B
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Answer:
Dave invested approximately $29,629.63 into Oil companies.
Step-by-step explanation:
8/9 (100,000) = i
i= $88,888.89
2/3(88,888.89)=c
c = $29,259.26
1/2(29,259.26)=o
o= $29,629.63
