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forsale [732]
3 years ago
11

Which expression is equivalent to -28xy+35y

Mathematics
2 answers:
Stella [2.4K]3 years ago
7 0

Answer:

Step-by-step explanation: factor out 7y since both the 28xy and the 35y share 7y as a common factor

D.7y(-4x+5)

DedPeter [7]3 years ago
5 0

Answer:

D. 7y=(-4x+5)

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If sin x=2/9,x, in quadrant i, then find(without findingx): sin(2x), cos(2x), tan(2x)
Sergio039 [100]
We have that
<span>sin x=2/9

we know that
sin</span>² x+cos² x=1---------> cos² x=1-sin² x-----> cos² x=1-(2/9)²
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Sin 2x=0.43
so
cos² 2x=1-sin² 2x---------> 1-[0.43]²-----> 1-[0.1878]----> 0.81
cos² 2x=0.81-----------> cos 2x=0.9

tan 2x=sin 2x/cos 2x--------> tan 2x=0.43/0.9---------> tan 2x=0.48

the answers are
sin 2x=0.43
cos 2x=0.9
tan 2x=0.48


8 0
3 years ago
If ur nice please answer me
Llana [10]
Hope this answer helps

5 0
2 years ago
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