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jek_recluse [69]
3 years ago
8

Solve for x : 7/8 = 21/x

Mathematics
2 answers:
castortr0y [4]3 years ago
8 0
Hey!

We could write the problem like this,
\frac{7}{8}=\frac{21}{x}
Cross multiply!
7x=8\cdot \:21
We know that 8\cdot \:21=168, let's plug that in.
7x=168
Divide both sides by 7.
\frac{7x}{7}=\frac{168}{7}

Our final answer would be,
x=24

Thanks!
-TetraFish
Ira Lisetskai [31]3 years ago
3 0
\frac{21}{1} \frac{7}{8} =  \frac{21}{x} ( \frac{21}{1} ) 
 \\ Cross-out, the  DOUBLE 21's \\ 7(x) = 21 \\ 21(8) = ? \\ 7(x) = 168  \\  \frac{168}{7}  = 24 \\ Answer: x = 24 Choice. 2
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max2010maxim [7]
A rational number can always be represented as a fraction.
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3 0
3 years ago
I need help....Does anybody know the answer?
Alex_Xolod [135]

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3 0
2 years ago
Fraction:
Zanzabum

Answer + step-by-step explanation:

7/10 as a decimal would be 0.7.

7/10 or 0.7 in a word form would be seven tenths.

<em><u>Hope this helps, if my answer or explanation is wrong  </u></em>

<em><u>feel free to message me in the comments :).</u></em>  

- genius423

6 0
3 years ago
Given that (-3,7) is on the graph of f(x), find the corresponding point for the function f(x + 5).
Stella [2.4K]
We have that
<span>(-3,7) is on the graph of f(x), find the corresponding point for the function
f(x + 5)

we know that
in the transformation f(x)-------> f(x+5)
the point (x.y) in f(x) becomes a point (x-5,y) in f(x+5)
so
(-3,7)-----------> becomes a point (-3-5,7)------> (-8,7)

the answer is
</span>(-8,7)<span>

</span>
7 0
3 years ago
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