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3 years ago

How do u get really smart

2 answers:

6 0

Haha, there isn't a thing that makes you 'really smart'.

However, you can grow and improve your knowledge.

The more challenging material you expose yourself to, while putting in the effort to solve them, there's no doubt you'll definitely improve!

+ you can try exercising your brain every now and then by playing trivia games or reading books- do whatever interests you and helps you learn!

Luda [366]3 years ago

4 0

Getting really smart requires great knowledge. If you want to be the best one in the class, you should always practice and always try even if something is too hard. Making you try harder problems makes your brain active and going. It helps with fast thinking. GETTING SMART IS A LOT OF WORK! I know, it sounds so boring, but that's what you JUST have to do. Being smart is being you. Put creativity into your work. BE yourself. If you build on the works of yesterday the reward will come tomorrow!

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Evaluate the surface integral. s x ds, s is the triangular region with vertices (1, 0, 0), (0, −2, 0), and (0, 0, 12).

aniked [119]

Parameterize the surface by

$\mathbf r(s,t)=(1-s)(0,0,12)+s\bigg((1-t)(1,0,0)+t(0,-2,0)\bigg)$
$\implies\mathbf r(s,t)=(x(s,t),y(s,t),z(s,t))=(s-st,-2st,12-12s)$

where $(s,t)\in(0,1)\times(0,1)$ . We have

$\|\mathbf r_s\times\mathbf r_t\|=\|(1-t,-2t,-12)\times(-s,-2s,0)\|=2\sqrt{181}s$

The surface integral is then

$\displaystyle\iint_Sx\,\mathrm dS=2\sqrt{181}\int_{s=0}^{s=1}\int_{t=0}^{t=1}s(s-st)\,\mathrm dt\,\mathrm ds$
$=\displaystyle2\sqrt{181}\left(\int_{s=0}^{s=1}s^2\,\mathrm ds\right)\left(\int_{t=0}^{t=1}(1-t)\,\mathrm dt\right)$
$=\dfrac{\sqrt{181}}3$

7 0

3 years ago

mary says then pen for her horse is a acute right angle. is this possible? explain clearly and explain everthing

Goryan [66]

The acute right angle means, the right angle is an acute angle so therefor it is not possible, because it is an acute angle not a right angle. Hope this helps :)

3 0

2 years ago

Use the quadratic formula to determine the exact solutions to the equation 6x^2 + 4x - 3 = 0

mezya [45]

To solve quadratics, the most correct and effective way, in my opinion, is the quadratic formula:

$x={\frac {-b\pm {\sqrt {b^{2}-4ac}}}{2a}}.$ 

Plugging it in, we get:

 $\frac{-4\pm \sqrt{16+72} }{12} = \frac{-4\pm 2\sqrt{22}}{12} = \frac{-2\pm \sqrt{22} }{6}$

So the final answer is:

$\frac{ \sqrt{22}-2 }{6}$ and $\frac{-2- \sqrt{22} }{6}$

5 0

3 years ago

The bill is $100.99. You want to leave a 20% tip. How much should the tip be?

Arisa [49]

Answer:

$20.20

Step-by-step explanation:

First Convert 20% into a decimal, by dividing it by 100

Percent = out of 100

20/100 = 0.2

Now, multiply the decimal (0.2) with the bill amount ($100.99):

0.2*100.99

$20.198 <== *remember, we are using money, so we round to the nearest cent (dime)

$20.20 <== how much tip you want to leave

How much you pay altogether:

(Bill + tip)

100.99 + 20.20

$121.19

Hope this helps!

8 0

2 years ago

1-(-4) ,, (-4) is squared outside the parentheses

Naddika [18.5K]

1-(-4)^2
1-(-4 times -4)
1-(16)
1-16
-15

5 0

3 years ago