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3 years ago

Help this is really confusing to me and I need help. Thanks

Mathematics

1 answer:

Alja [10]3 years ago

8 0

Answer: is 270 im in k12 i took the quiz

Step-by-step explanation: so all we do is times 9 by 30 and we get 270 and if we divide 270 by 9 we get 30 give me bralist

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A plane loses altitude at the rate of 5 meters per second. It begins with an altitude of 8500 meters. The planes altitude is a f

Pavlova-9 [17]

Answer:

28 minutes and 3 seconds

Step-by-step explanation:

5 0

4 years ago

Find the derivative of <img src="https://tex.z-dn.net/?f=tan%5E%7B-1%7D%20x" id="TexFormula1" title="tan^{-1} x" alt="tan^{-1} x

sladkih [1.3K]

$\huge{\color{magenta}{\fbox{\textsf{\textbf{Answer}}}}}$

$\frak {\huge{ \frac{1}{1 + {x}^{2} } }}$

Step-by-step explanation:

$\sf let \: f(x) = { \tan }^{ - 1} x \\ \\ \sf f(x + h) = { \tan}^{ - 1} (x + h)$

$\sf f'(x) = \frac{f(x+h) - f(x) }{h}$

$\sf \implies \lim_{ h \to 0 } \frac{ { \tan }^{ - 1}(x + h) - { \tan}^{ - 1}x }{h} \\ \\ \\ \sf \implies \lim_ {h \to 0} \frac{ { \tan}^{ - 1} \frac{x + h - x}{1 + (x + h)x} }{h}$

By using

$\sf { \tan}^{ - 1} x - { \tan}^{ - 1} y = \\ \sf { \tan}^{ - 1} \frac{x - y}{1 + xy} formula$

$\sf \implies \large \lim_{h \to0 } \frac{ { \tan}^{ - 1} \frac{h}{1 + hx + {x}^{2} } }{h} \\ \\ \\ \sf \implies \large{\lim_{h \to0} } \frac{ { \tan}^{ - 1} \frac{h}{1 + hx + {x}^{2} } }{ \frac{h}{1 + hx + {x}^{2} } \times (1 + hx + {x}^{2} )} \\ \\ \\ \sf \implies \large \lim_{h \to0} \frac{ { \tan}^{ - 1} \frac{h}{1 + hx + {x}^{2} } }{ \frac{h}{1 + hx + {x}^{2} } } + \lim_{h \to0} \frac{1}{1 + hx + {x}^{2} }$

Now putting the value of h = 0

$\sf \large \implies 0 + \frac{1}{1 + 0 + {x}^{2} } \\ \\ \\ \purple{ \boxed { \implies \frac{1}{1 + {x}^{2} } }}$

6 0

2 years ago

PLEASE ANSWER THESE 2 QUESTIONS ASAP!!!!!!!!!!!!!!!!!!!!!

Afina-wow [57]

I can answer your first question she can do 5 minutes at the most. If she does 20 per minute, for one is 20, for two minutes is 40, three is 60, four is 80 and five is 100 ft.

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3 years ago

Convert 29.53% to a decimal

grigory [225]

29.53 written as a decimal would be 0.2953.

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4 years ago

a scientist if using a tracking device to measure how fast a blue whale swims. Data from the device show that the whale swam a c

Dahasolnce [82]

Answer:

it would be 423849+2364355-3213123122+232424-213123:222.222222222222

Step-by-step explanation:

mark it brainliest if it helps you ❤️

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3 years ago