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juin [17]
3 years ago
13

What is the quotient a-3/7÷3-a/21

Mathematics
2 answers:
Svetach [21]3 years ago
8 0
Its -3 I just took the test
Airida [17]3 years ago
3 0
I wish you were using parentheses here.  I must assume (without knowing for sure) that y ou mean

a - 3/7
----------
3 - a/21

The LCD here is 21, since 7 divides into 21 without a remainder. 

Thus, multiply numerator and denominator by 21:


21a - 9
-----------
63 - a

You could leave this result as is, or you could factor out 3:
    
     7a-3
3 ---------
    63-a
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7 0
3 years ago
Please help me with these, find the missing side. Thank yu only if you know
abruzzese [7]

Answer:

7.48m (3s.f.)

Step-by-step explanation:

Let the missing side be x m.

Applying Pythagoras' Theorem,

x² +5²= 9²

x² +25= 81

x²= 81 -25 <em>(</em><em>-25</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

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x =  \sqrt{56}

x = 2 \sqrt{14}

x= 7.48 (3 s.f.)

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8 0
3 years ago
One and one third minus two thirds equals
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3 0
4 years ago
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Oksi-84 [34.3K]

you would add the parantheses around '3-4'
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3 years ago
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Answer:

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Step-by-step explanation:

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