Solve for x 8x/7 + 9 = 30

Mathematics

2 answers:

kari74 [83]3 years ago

6 0

Solve for x by simplifying both sides and isolating the variable.
ANSWER:
x=147/8

LenaWriter [7]3 years ago

5 0

Answer:you might have to simplify but x = 18 3/8

Step-by-step explanation:

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How many groups of four shirts can you choose from six shirts? Determine if the word problem is a permutation or a combination,

umka2103 [35]

When choosing the shirts it doesn't matter what order they're chosen in because at the end you'll have the same four shirts ... so it's a combinations question (rather than a permutations question where the order of choice makes a difference)
<span>so number of groups = 6C4 = 15 </span>
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4 years ago

suppose the number of fiction books is 2/7 times the number of nonfiction books. what would be the ratio of the numbers of nonfi

Elis [28]

Well, the total amount of books is all fiction books and nonfiction books, let's say is "x", total

now, the fiction books are 2:7 or 2/7 to nonfiction

so, if we divide the total "x" by 2+7, or 9, 2 of those quotients go to fiction and 7 of those go to nonfiction

if we divide "x" by 9, a "whole" is 9/9 or (9/9)x or 1x or just "x"

and we know 7 of those 9ths belong to nonfiction, thus

$\bf \begin{array}{clclclll}
\cfrac{2}{9}&+&\cfrac{7}{9}&=&\cfrac{9}{9}\\
\uparrow &&\uparrow &&\uparrow \\
fiction&&nonfiction&&whole
\end{array}\\\\
-----------------------------\\\\
\cfrac{nonfiction}{whole}\implies \cfrac{7}{9}\implies 7:9\impliedby ratio$

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3 years ago

After adding or subtracting two rational expressions, you should put the result

Julli [10]

Answer:

Step-by-step explanation:

You need to divide it to further simplify the expression unless it is already in its simplest form.

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3 years ago

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