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lesya692 [45]
3 years ago
10

Please help.

Mathematics
1 answer:
kondor19780726 [428]3 years ago
6 0

Answer :

27.5 minutes

Steps:

1) put into fraction form:

160/20 = 220/x

2) simplify:

160/20 = 8/1

3) cross multiply:

8 • x = 8x

220 • 1 = 220

4) divide on both sides:

8/8 = crosses out

220/8 = 27.5

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#51:  8v^2 - 12v + 9:  the discriminant is (-12)^2 - 4(8)(9) = -144.  we have two unequal, complex roots

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4 0
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PLEASE HELP!
Fed [463]

Not sure for (b)

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