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Stella [2.4K]
3 years ago
12

Which of the following is a solution of x2 + 5x = −2? (2 points)

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
5 0

Answer:

i don't understand the question, please explain more

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If f(x) = -2x^2 + x–5, what is f(3)?
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A pharmaceutical company sells bottles of 500 calcium tablets in two dosages: 250 milligram and 500 milligram. Last month, the c
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X = 250 mg tabs
y = 500 mg tabs

2200x + 1800y = 39200....multiply by -1
2200x + 2200y = 44000
--------------------------------
-2200x - 1800y = - 39200 (result of multiplying by -1)
2200x + 2200y = 44000
--------------------------------add
400y = 4800
y = 4800/400
y = 12...... the 500 mg tabs (y) costs $ 12 per bottle

2200x + 2200y = 44000
2200x + 2200(12) = 44000
2200x + 26400 = 44000
2200x = 44000 - 26400
2200x = 17600
x = 17600/2200
x = 8 <== the 250 mg tabs (x) costs $ 8 per bottle
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3 years ago
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Find the distance between the pair of points (-7, 2) and (-2, 14)
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