3 years ago

If you have the question 2.545 And you have to multiply it do you go to the right or the left

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

8 0

Right to left is the way you do it

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The answer should be 664 in squared

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Simplify the expression; 2^3 x 2^2 A. 2^5 B. 4^6 C. 4^5 D. 2^6

Illusion [34]

Answer:

Simplify the expression; 2^3 x 2^2

A. 2^5 

B. 4^6

C. 4^5

D. 2^6

Step-by-step explanation:

You add the powers together since you are multiplying.

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Find the maximum and minimum values of the function f(x,y)=2x2+3y2−4x−5 on the domain x2+y2≤100. The maximum value of f(x,y) is:

ryzh [129]

First find the critical points of f :

$f(x,y)=2x^2+3y^2-4x-5=2(x-1)^2+3y^2-7$

$\dfrac{\partial f}{\partial x}=2(x-1)=0\implies x=1$

$\dfrac{\partial f}{\partial y}=6y=0\implies y=0$

so the point (1, 0) is the only critical point, at which we have

$f(1,0)=-7$

Next check for critical points along the boundary, which can be found by converting to polar coordinates:

$f(x,y)=f(10\cos t,10\sin t)=g(t)=295-40\cos t-100\cos^2t$

Find the critical points of g :

$\dfrac{\mathrm dg}{\mathrm dt}=40\sin t+200\sin t\cos t=40\sin t(1+5\cos t)=0$

$\implies\sin t=0\text{ OR }1+5\cos t=0$

$\implies t=n\pi\text{ OR }t=\cos^{-1}\left(-\dfrac15\right)+2n\pi\text{ OR }t=-\cos^{-1}\left(-\dfrac15\right)+2n\pi$

where n is any integer. We get 4 critical points in the interval [0, 2π) at

$t=0\implies f(10,0)=155$

$t=\cos^{-1}\left(-\dfrac15\right)\implies f(-2,4\sqrt6)=299$

$t=\pi\implies f(-10,0)=235$

$t=2\pi-\cos^{-1}\left(-\dfrac15\right)\implies f(-2,-4\sqrt6)=299$

So f has a minimum of -7 and a maximum of 299.

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aivan3 [116]

The correct answer should be 300

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Titan, one of saturn's moons, is really large! It has a diameter of 5.15x100 kilometers wide! How large is Titan?

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5.15 * 100

= 515

515 kilometers wide.

Hope this helps!

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3 years ago

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If you have the question 2.545 And you have to multiply it do you go to the right or the left​

If you have the question 2.545 And you have to multiply it do you go to the right or the left