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Ronch [10]
3 years ago
5

-2.8k=7 how do I solve for k?

Mathematics
2 answers:
baherus [9]3 years ago
4 0

Answer:

k= -2.5

Step-by-step explanation:

larisa [96]3 years ago
4 0
7/-2.8. We have to get k to one side and we can do that by diving 7 by -2.8 so k is equal to -2.5 .
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Eight girls recieved 3 book each. Six boys each recieved 1 book more than each girl. How many book in all were given to them....
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3 years ago
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5 0
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6 0
4 years ago
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5 0
4 years ago
Read 2 more answers
Explain in detail how to find the vertex: <br> y=-2x^2 + 2x + 3
Cerrena [4.2K]

\bf \textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{-2}x^2\stackrel{\stackrel{b}{\downarrow }}{+2}x\stackrel{\stackrel{c}{\downarrow }}{+3} \qquad \qquad  \left(-\cfrac{ b}{2 a}~~~~ ,~~~~  c-\cfrac{ b^2}{4 a}\right)


\bf \left(-\cfrac{2}{2(-2)}~~,~~3-\cfrac{2^2}{4(-2)}  \right)\implies \left( \cfrac{1}{2}~~,~~3+\cfrac{4}{8} \right)\implies \left(\cfrac{1}{2}~~,~~\cfrac{28}{8}  \right) \\\\\\ \left(\cfrac{1}{2}~~,~~\cfrac{7}{2}  \right)\implies \left(\frac{1}{2}~,~3\frac{1}{2}  \right)

7 0
3 years ago
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