The mean of Holly's first six math quiz scores was 75%. After taking the seventh quiz, her

1 answer:

3 0

The total of her first six quizzes is 75*6 = 450

Let her seventh score be x
The total of her seven quizzes be 450+x

Then, (450+x)/7 = 77
x = (77*7) - 450 = 89

Her seventh score is 89
x =

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A rational number is 5.3 . It's rational because it can be written as a fraction a/b

- that is 5 3/10 or 53/10.

An irrational number between the 2 values would be √29

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Fill in the missing number to complete the linear equation that gives the rule for this table.

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Answer:

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Step-by-step explanation:

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Rashid [163]

In algebraic terms this is:

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The slope of a line is represented by the variable<br>ОХ<br>Оy<br>m<br>b.

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The answer for this question is b

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Iliana was part of a group that was working on changing 0.4 repeated to a fraction. Each member of the group had a different ans

amm1812

$\bf 0.444444444\overline{4}\impliedby \textit{and keeps on going}\\\\
-------------------------------\\\\
\textit{let's say }\boxed{x=0.444444444\overline{4}}\quad \textit{ thus }10\cdot x=4.44444444\overline{4}
\\\\\\
\textit{wait a minute! }4.44444444\overline{4}\textit{ is really just }4+0.444444444\overline{4}$

$\bf \textit{but we know }x=0.444444444\overline{4} \textit{ so then }4+0.444444444\overline{4}=\boxed{4+x}
\\\\\\
\textit{wait a second! }10\cdot x\implies 10x=4.444444444\overline{4}=4+x
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thus\qquad 10x=4+x\implies 10x-x=4\implies 9x=4\implies \boxed{x=\cfrac{4}{9}}$

you can check in your calculator.

anyhow, to get the "recurring decimal to fraction", you start by setting to some variable, "x" in this case, then move the repeating part to the left of the point by multiplying it by some power of 10, and then do the equating.

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