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4 years ago

What is 399,639 rounded to the nearest underlined place value

Mathematics

1 answer:

Harman [31]4 years ago

8 0

400,000 show your place value in order to get the correct answer but most likely this is your answer

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Zy+y^2 when y=−3 and z=−3.

stellarik [79]

Answer:

Step-by-step explanation:

-3(-3) = 9

-3^2= -9

9-9=0

6 0

3 years ago

Read 2 more answers

Whats 27 x 300 / 34 x 6

Angelina_Jolie [31]

Answer:

Use Calculator:

Approximately. 1429.411

Step-by-step explanation:

Hope it Helps!!!

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2 years ago

Solve for x. x/m-x/n=1/p

Alex_Xolod [135]

I hope this helps you

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3 years ago

Sandra baked 36 cookies yesterday morning and 24 cookies last night. Tomorrow, she plans on baking 48 more. How many cookies did

pshichka [43]

Answer B) 60 because 34 + 24 is 60

3 0

3 years ago

Got a calc 1 question,

belka [17]

$v=\dfrac h{3x}\implies\dfrac{\mathrm dv}{\mathrm dt}=\dfrac{3x\frac{\mathrm dh}{\mathrm dt}-3h\frac{\mathrm dx}{\mathrm dt}}{3x^2}$

By the chain rule,

$\dfrac{\mathrm dh}{\mathrm dt}=\dfrac{\mathrm dh}{\mathrm dx}\dfrac{\mathrm dx}{\mathrm dt}$

We have

$h(x)=4e^{2x-6}-x^2+5\implies\dfrac{\mathrm dh}{\mathrm dx}=8e^{2x-6}-2x$

and we're given that $x$ changes at a constant rate of $\frac{\mathrm dx}{\mathrm dt}=0.2$ thousand people per minute, which means

$\dfrac{\mathrm dv}{\mathrm dt}=\dfrac{3x\left(8e^{2x-6}-2x\right)\left(0.2\frac{\text{thousand people}}{\rm min}\right)-3h\left(0.2\frac{\text{thousand people}}{\rm min}\right)}{3x^2}$

At the moment $x=4$ thousand people are in the park, we have $h(4)=4e^2-11$ , so we find

$\dfrac{\mathrm dv}{\mathrm dt}=\dfrac{12\left(8e^2-8\right)-3(4e^2-11)}{240}\dfrac{\text{thousand people}}{\rm min}=\dfrac{7(4e^2-3)}{80}\dfrac{\text{thousand people}}{\rm min}$

or approximately 2.324 thousand people per minute.

5 0

4 years ago