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3 years ago

Solve xy − 2 = k for x.

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

6 0

Isolate x
So xy - 2 = k
Then
xy = k + 2

x = (k+2)/y

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Create an equation that you can use in everyday life. Then solve it.

galina1969 [7]

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3 years ago

Heidi has an average score of 78 for her first six chemistry tests. If Heidi"s scores for the first four tests were 82,78,87, an

elixir [45]

Answer:

(A)74

Explanation:

Let her average score on the last two tests = x.

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Since the average score for her first six chemistry tests = 78

$\frac{82+78+87+73+x+x}{6}=78$

We then solve for x.

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1 year ago

In a group of 60 numbers, average of

Arada [10]

Answer:

c. 18

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35*18=630

15*10=150

Now we do not know how many numbers the last group has. However, we can find it out doing 60-35-15 to see how many numbers are left. There would be 10 numbers left

10*30=300

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3 years ago

I'm not sure how to do these equations

Gennadij [26K]

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3 years ago

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Luda [366]

Answer:

(1)

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