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katovenus [111]
3 years ago
5

Hi, I need some help on this question

Mathematics
1 answer:
Alenkasestr [34]3 years ago
6 0

Answer:

A : 20x+21=30x-29

B : m<1 = 121   m<2 = 121

Step-by-step explanation:

Original equation

  • 20x+21=30x-29

Add +29 to both sides

  • 20x+50=30x

Subtract -20x

  • 50=10x

Divide by 10

  • 5 = x

Checking your work and doing substitution

20(5)+21

100+21

121

30(5)-29

150-29

121

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We are given f(x) = 5x
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Step 1:
Replace f(x) by y.
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y = 5x

Step 2:
Isolate x
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x = y/5

Step 3:
Replace x by f'(y)
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f'(y) = y/5

Step 4:
Replace all occurrences of y by x.
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Answer:

No student liked only Nokia

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3 years ago
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nataly862011 [7]

Answer:

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