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eimsori [14]
3 years ago
10

X + 7y = 21

Mathematics
2 answers:
Flauer [41]3 years ago
8 0

Answer:

i am sorry but i don't know this answer

Step-by-step explanation:

Ket [755]3 years ago
7 0

Answer:

x=21−7y?

Step-by-step explanation:

I don't really know what else to do

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Step-by-step explanation:

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Suppose that $p$ and $q$ are positive numbers for which \[\log_9 p = \log_{12} q = \log_{16} (p + q).\] what is the value of $q/
SVEN [57.7K]

Given p,q>0 and \log_9p=\log_{12}q=\log_{16}(p+q)=x (say).

Then,

p=9^x\\ q=12^x\\ p+q=16^x

From the above 3 equations,

\frac{q}{p} =(\frac{12}{9} )^x\\ \frac{q}{p} =(\frac{4}{3} )^x\\ \frac{p+q}{p} =(\frac{16}{9} )^x\\ \frac{p+q}{p} =(\frac{4}{3} )^{2x}\\

From the equations, we get

\frac{p+q}{p}=(\frac{q}{p})^2\\ 1+\frac{q}{p}=(\frac{q}{p})^2\\ (\frac{q}{p})^2-\frac{q}{p}-1=0\\ \frac{q}{p}=\frac{1 \pm \sqrt{5}}{2}

Since p,q>0, the negative value is rejected.

\frac{q}{p}=\frac{1 + \sqrt{5}}{2}

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4 years ago
LCM of 15 and 50? Please explain.
levacccp [35]
The LCM of 15 and 50 is 150
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3 years ago
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