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Katarina [22]
3 years ago
15

Ms. Cathy bought a package of pens. Out of every 10pens​, 9 are black. If there are 70 pens in the​ pack, what fraction of the p

ens in the pack are​ black? What percent of the pens in the pack are​ black.
Mathematics
1 answer:
cluponka [151]3 years ago
8 0

Answer:

the answer is 90 percent

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Justify x over 3 minus 7 equals 11
drek231 [11]

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54/3-7=11

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I'll write "x" instead theta.

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Use the method of reduction of order to find a second independent solution of the given differential equation. t2y'' + 3ty' + y
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I assume you mean y_1=t^{-1}, and not y_1=t-1, since this doesn't satisfy the ODE.

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