I need help with my last two questions:)

Mathematics

1 answer:

Scorpion4ik [409]3 years ago

6 0

Answer:

5. (a)

6. (b)

I am hoping that this will help you

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Step-by-step explanation:

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Please help differentiate this!!!!!!!!!

vlada-n [284]

$\bf h=20ln(3t+2)+30\\\\
-------------------------------\\\\
\boxed{a}\\\\
\stackrel{0~years}{t=0}\qquad h=20ln[3(0)+2]+30\implies h=20ln(2)+30
\\\\\\
h\approx 43.86
\\\\\\
\boxed{b}\\\\
\stackrel{1~meter}{h=100}\qquad 100=20ln(3t+2)+30\implies 70=20ln(3t+2)
\\\\\\
\cfrac{70}{20}=ln(3t+2)\implies \stackrel{\textit{log cancellation rule}}{e^{\frac{7}{2}}=e^{ln(3t+2)}}\implies e^{\frac{7}{2}}=3t+2
\\\\\\
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$\bf \boxed{c}\\\\
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gayaneshka [121]

Answer:

Step-by-step explanation:

I think it three sometimes it's a trick question

so its not number one or 2 because how are they her children so the answer is 3

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