2 years ago

What about 11 and 169

Mathematics

1 answer:

yKpoI14uk [10]2 years ago

8 0

Answer:

Step-by-step explanation:68

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Find the area of the surface correct to four decimal places by expressing the area in terms of a single integral and using your

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If we substitute $x=r\cos\theta$ and $y=r\sin\theta$ , we get $r^2=x^2+y^2$ , so that

$z=\cos(x^2+y^2)=\cos(r^2)$

which is independent of $\theta$ , which in turn means the surface can be treated like a surface of revolution.

Consider the function $f(t)=\cos(t^2)$ defined over $0\le t\le1$ . Revolve the curve $C$ described by $f(t)$ about the line $t=0$ . The area of the surface obtained in this way is then

$\displaystyle2\pi\int_C\mathrm dS=2\pi\int_0^1\sqrt{1+f'(t)^2}\,\mathrm dt$

$=\displaystyle2\pi\int_0^1\sqrt{1+(-2t\sin(t^2))^2}\,\mathrm dt$

$=\displaystyle2\pi\int_0^1\sqrt{1+4t^2\sin^2(t^2)}\,\mathrm dt\approx7.4144$

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2 years ago

The bus will leave norfolk, VA at 6:00

aniked [119]

Time = distance / speed
t = 350/50
t = 7 hrs
arrival time at New York City is 1 pm. on Thursday

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2 years ago

mario62 [17]

Answer:

An equation is a mathematical statement that shows the equal value of two expressions while an inequality is a mathematical statement that shows that an expression is lesser than or more than the other. 2. An equation shows the equality of two variables while an inequality shows the inequality of two variables.

Step-by-step explanation:

hope this helps!

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2 years ago

Read 2 more answers

Kim read 4/5 of her book and Grace read 6/10 of her book. who read more of her book, kim or Grace?

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Kim did. Make the fractions into decimals(4 divided by 5, 6 divided by 10) Kim got 0.8, while Grace got 0.6.

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2 years ago

What is the measure of 1,2, and 3

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