3 years ago

Find -3 3/4 +1/2, i-Ready quiz

Mathematics

1 answer:

Fofino [41]3 years ago

4 0

Answer: I think the answer is -3 2/5✨

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The area of a circular sun spot is growing at a rate of 1,200 km2/s.

Tpy6a [65]

A)

$\bf \textit{area of a circle}\\\\
A=\pi r^2
\\\\\\
\cfrac{dA}{dt}=\pi \cdot 2r\cfrac{dr}{dt}\implies \cfrac{dA}{dt}=2\pi r\cfrac{dr}{dt}\implies \cfrac{\frac{dA}{dt}}{2\pi r}=\cfrac{dr}{dt}\\\\
-----------------------------\\\\
\left. \cfrac{dr}{dt} \right|_{r=3000}\implies \cfrac{1200}{2\pi \cdot 3000}=\cfrac{dr}{dt}\\\\$

B)

$\bf A=\pi r^2\qquad A=490000\implies 490000=\pi r^2\implies \sqrt{\cfrac{490000}{\pi }}=r
\\\\\\
\left. \cfrac{dr}{dt} \right|_{r=\sqrt{\frac{490000}{\pi }}}\implies \cfrac{1200}{2\pi \cdot \sqrt{\frac{490000}{\pi }}}=\cfrac{dr}{dt}
$

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3 years ago

Find the nth term of this quadratic sequence 2,8,18,32,50

olga_2 [115]

Answer:

= 2n²

Step-by-step explanation:

From the sequence 2,8,18,32,50

The difference between each numbers are

: 6, 10, 14, 18

The difference between the second sequence is 4.

Therefore the nth term of the sequence is 2n²

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Brandon is training for the 200-meter dash.His best running time was 31.25 seconds. If Brandon wants to run the dash in 27 secon

Eduardwww [97]

What is 31.25-27? That is your answer.

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Jalen traded $4100 for Mexican pesos, immediately changed his mind, and then promptly traded his Mexican pesos back into dollars

Tcecarenko [31]

The answer is the option A.) More than $0 but less than $4100

Because, when currency is exchanged for another currency, the bank or trader usually charges commission for changing it.

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4 years ago

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Someone help me please

OLEGan [10]

Umm i think the answer is C

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3 years ago