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Nostrana [21]
3 years ago
9

Help me with this please

Mathematics
1 answer:
frozen [14]3 years ago
8 0
Youd do 4x-20 + x= 90
so combine like terms 5x-20=90
subtract 20 from each side 5x=70
so x=14
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If y varies directly with x when y=1/3 and x = 12, find x if y is 4.
Nikitich [7]

Answer:

x = 144

Step-by-step explanation:

y α x

we introduce a constant 'k' when changing from α to =.

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Meaning, ⅓ = k * 12

⅓ = 12k

k = ⅓ ÷ 12

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4 years ago
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ryzh [129]

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3 years ago
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miss Akunina [59]

Answer:

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Step-by-step explanation:

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3 0
4 years ago
Read 2 more answers
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4 years ago
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Alenkinab [10]

Answer: This is what I have tried --

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Step-by-step explanation: hope this is right

7 0
3 years ago
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