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podryga [215]
3 years ago
10

Q is the midpoint of line segment PR. PR=9x-31 and QR=43 ; find x

Mathematics
1 answer:
bulgar [2K]3 years ago
5 0

notice that, if Q is the midpoint of PR, that simply means that PQ = QR = 43.


\bf \boxed{P}\underset{\leftarrow 9x-31 \to }{\stackrel{\stackrel{\downarrow }{43}}{\rule[0.35em]{10em}{0.25pt}}Q\stackrel{43}{\rule[0.35em]{10em}{0.25pt}}}\boxed{R}
\\\\\\
9x-31=43+43\implies 9x-31=86\implies 9x=117
\\\\\\
x=\cfrac{117}{9}\implies x=13

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What is the value of this expression?
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Answer:

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Step-by-step explanation:

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3 years ago
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(1+(0.065÷365))^365t=4
marta [7]
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Check with the rule of 69, applicable to continuous compounding (an approximation to current problem) to double money, it take 69/interest rate in % years.
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