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pentagon [3]
3 years ago
5

Jamie drives to the dance to pick up his younger brother Mike. Because of the dance's

Mathematics
1 answer:
Vika [28.1K]3 years ago
5 0

Answer:

Because of traffic, she averaged only 15 miles per hour on the way there but ... If the total travel time was 2 hours how long does it take her to drive to ...

Step-by-step explanation:

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Find the area of the part of the paraboloid z = 9 - x^2 - y^2 that lies above the xy-plane.
svetoff [14.1K]

Parameterize this surface (call it S) by

\vec r(u,v)=u\cos v\,\vec\imath+u\sin v\,\vec\jmath+(9-u^2)\,\vec k

with 0\le u\le3 and 0\le v\le2\pi. Take the normal vector to S to be

\vec r_u\times\vec r_v=2u^2\cos v\,\vec\imath+2u^2\sin v\,\vec\jmath+u\,\vec k

Then the area of S is

\displaystyle\iint_S\mathrm dA=\iint_S\|\vec r_u\times\vec r_v\|\,\mathrm du\,\mathrm dv

=\displaystyle\int_0^{2\pi}\int_0^3u\sqrt{1+4u^2}\,\mathrm du\,\mathrm dv

=\displaystyle2\pi\int_0^3u\sqrt{1+4u^2}\,\mathrm du=\boxed{\frac{37\sqrt{37}-1}6\pi}

3 0
3 years ago
HELP ASAP HELP PLZ!!!!!!!!!!<br><br> if pic don't come thru wait for me to edit it
Vanyuwa [196]
Your answer will be the 1st one because it says the distributice property and that is when you multiply a number outside a parenthesis and the number one shows that and also as the right numbers, because 2 fits in 34 seventeen(17) times and 2 fits in 16 eight(8) times, so your answer would be 2(17+8)

Hope this helps
5 0
3 years ago
WHAT TIME IS HALF PAST THREE???
Naddika [18.5K]

Answer:

three-thirty (3:30)

Step-by-step explanation:

An hour is 60 minutes, so half an hour would be 30 minutes. Half past 3 would also be 30 minutes past 3, or 3:30.

I hope this helps!! :) Have a lovely day!!!

5 0
2 years ago
Read 2 more answers
 Simplify: 2k– 3k+ 3k ​
Sonbull [250]

Step-by-step explanation:

2k - (3k - 3k) = 2k

please give me a brainliest answer

7 0
2 years ago
Read 2 more answers
Identify the domain and range of the inverse of f(x) = 0.5^x.
LekaFEV [45]

Answer:

Domain  (0, ∞)  and Range (-∞, ∞).

Step-by-step explanation:

The domain of f(x) = 0.5^x is all values of x and the range is f(x)>0  as  0.5^x  cannot be negative or zero.

In interval form this is Domain is (-∞, ∞) and Range is  (0, ∞).

So its inverse has Domain  (0, ∞)  and Range (-∞, ∞).

4 0
3 years ago
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