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3 years ago

How do the products 4.3 x 0.56 and 0.43 x 5.6 compare? Explain.

Mathematics

1 answer:

Tems11 [23]3 years ago

3 0

They are all the same numbers just that 0.43 is rounded

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Evaluate the line integral for x^2yds where c is the top hal fo the circle x62 _y^2 = 9

natulia [17]

Parameterize $C$ by

$\mathbf r(t)=\langle x(t),y(t)\rangle=\langle3\cos t,3\sin t\rangle$

where $0\le t\le\pi$ . Then the line integral is

$\displaystyle\int_Cx^2y\,\mathrm dS=\int_{t=0}^{t=\pi}x(t)^2y(t)\left\|\frac{\mathrm d\mathbf r(t)}{\mathrm dt}\right\|\,\mathrm dt$
$=\displaystyle\int_{t=0}^{t=\pi}(3\cos t)^2(3\sin t)\sqrt{(-3\sin t)^2+(3\cos t)^2}\,\mathrm dt$
$=\displaystyle3^4\int_{t=0}^{t=\pi}\cos^2t\sin t\,\mathrm dt$

Take $u=\cos t$ , then

$=\displaystyle-3^4\int_{u=1}^{u=-1}u^2\,\mathrm du$
$=\displaystyle3^4\int_{u=-1}^{u=1}u^2\,\mathrm du$
$=\displaystyle2\times3^4\int_{u=0}^{u=1}u^2\,\mathrm du$
$=54$

6 0

3 years ago

How many days are there from march 15 to september 15 inclusive?

Natasha2012 [34]

March 15 - March 31 = 17 days

April = 30days

May = 31 days

June = 30 days

July = 31 days

August = 31 days

Sept 1 - Sept 15 = 15 days

total = 185 days

6 0

3 years ago

Find log1/4 rounded to the nearest hundredth.

erastovalidia [21]

Answer:

-log_4

Step-by-step explanation:

4 0

2 years ago

Jeremy is randomly selecting an outfit to celebrate Probability Day at his school. He can choose from a green (G) or purple (P)

asambeis [7]

C socks, and boots.
Because it could be cold outside?

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2 years ago

If the velocity of an object changes from 65 m/s to 98 m/s during a time interval of 12 s, what is the acceleration of the objec

SVETLANKA909090 [29]

Answer

Find out the what is the acceleration of the object .

To prove

Formula

$Acceleration = \frac{Final\ velocity - Intial\ velocity}{Time }$

Where

t = the time in which the change occurs

As given

If the velocity of an object changes from 65 m/s to 98 m/s during a time interval of 12 s .

Final velocity = 98 m/s

Intial velocity = 65 m/s

Time = 12 s

Put in the formula

$Acceleration = \frac{98 - 65}{12}$

$Acceleration = \frac{33}{12}$

Acceleration = 2 .75 m/s ²

Option (A) is correct .

7 0

3 years ago

Read 2 more answers