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3 years ago

Fish is $20 a kilogram your recipe asks for 1/2 kilogram. How much will it cost

Mathematics

1 answer:

lora16 [44]3 years ago

5 0

Known :

1 kg = $20

Asked :

½ kg = $...?

Answer :

1 kg = $20

½ kg = ½ × $20

= $10

Hope it helps and is useful :)

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3 years ago

Lisa is now six years older than Cheryl. In two years, Lisa will be twice as old as Cheryl. How old is Lisa now?

Elena-2011 [213]

--------------------------------------------------
Define x :
--------------------------------------------------
Let Cheryl be x years old.
Cheryl = x
Lisa = x + 6

--------------------------------------------------
In two years time:
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Cheryl = x + 2
Lisa = x + 8

--------------------------------------------------
Lisa will be twice as old as Cheryl :
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x + 8 = 2(x + 2)

--------------------------------------------------
Solve x :
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x + 8 = 2(x + 2)
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Find their age :
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Answer: Lisa is 10 years old now.
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3 years ago

Create a linear function that has a rate of change of -4 and a solution at (-5,2)

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You would use the point-slope equation of y-y₁=mx(x-x₁)

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3 years ago