3 years ago

If an amount of $100 in a savings account increases by 10% then increases by 10% again is that the same as increasing by 20

1 answer:

8 0

No, it's not.
increasing by a percentage means (1+percentage)
$100 * (1+0.1) = $110

$110 * (1.1) = $121

However, $110 * 1.2 = $132

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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

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

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

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3 years ago

BRAINLIEST, URGENT

stira [4]

Answer:

12.5 m

Step-by-step explanation:

1st drop 50 m

2nd drop 50/2 = 25 m

3rd drop 25/2 = 12.5 m

4 0

2 years ago

The sum of 3 consecutive odd numbers is 51. What is the second number in this sequence?

tatiyna

(2n +1) + (2n + 3) + (2n + 5) = 51
6n + 9 = 51
6n = 42
n = 7
numbers are 15 17 and 19

5 0

3 years ago

A quadrilateral has three angles measuring 60 º , 45 º, and 100 º . What is the measure of the fourth angle?

morpeh [17]

Answer:

155°

Step-by-step explanation:

The sum four angles is 360° so:

60°+45°+100°+x=360°

x = 360°-100°-45°-60°=155°

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3 years ago

What’s the answer????

serious [3.7K]

Answer:

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers