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nirvana33 [79]
3 years ago
8

What is 15% of what is 12

Mathematics
2 answers:
Snowcat [4.5K]3 years ago
4 0
15% of 12 is 1.8
Hope I could help!
dolphi86 [110]3 years ago
4 0
Fifteen percent of twelve is one point eight
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Divide x^4+3x^3-2x^2+4 by x-2 what is the correct synthetic division and quotinent
frez [133]

Answer:

A

Step-by-step explanation:

The correct divisor is 2. You change the sign of the real number without a variable when that real number is  the divisor.

So - 2 becomes 2 and C and D are both incorrect.

The 0 comes between - 2 and 4 because the x term is 0x. (there isn't one).

That makes B wrong.

The answer is A

3 0
3 years ago
What is the product 49 × 0.7? Enter your answer in the box.
marishachu [46]

Answer:

34.3

Step-by-step explanation:

To multiply just convert the 49 into a decimal like this -> 49.0 x 0.7 = 34.3

3 0
3 years ago
Use spherical coordinates to find the volume of the region that lies outside the cone z = p x 2 + y 2 but inside the sphere x 2
Harman [31]

I assume the cone has equation z=\sqrt{x^2+y^2} (i.e. the upper half of the infinite cone given by z^2=x^2+y^2). Take

\begin{cases}x=\rho\cos\theta\sin\varphi\\y=\rho\sin\theta\sin\varphi\\z=\rho\cos\varphi\end{cases}\implies\mathrm dx\,\mathrm dy\,\mathrm dz=\rho^2\sin\varphi\,\mathrm d\rho\,\mathrm d\theta\,\mathrm d\varphi

The volume of the described region (call it R) is

\displaystyle\iiint_R\mathrm dx\,\mathrm dy\,\mathrm dz=\int_0^{2\pi}\int_0^{\sqrt2}\int_{\pi/4}^\pi\rho^2\sin\varphi\,\mathrm d\varphi\,\mathrm d\rho\,\mathrm d\theta

The limits on \theta and \rho should be obvious. The lower limit on \varphi is obtained by first determining the intersection of the cone and sphere lies in the cylinder x^2+y^2=1. The distance between the central axis of the cone and this intersection is 1. The sphere has radius \sqrt2. Then \varphi satisfies

\sin\varphi=\dfrac1{\sqrt2}\implies\varphi=\dfrac\pi4

(I've added a picture to better demonstrate this)

Computing the integral is trivial. We have

\displaystyle2\pi\left(\int_0^{\sqrt2}\rho^2\,\mathrm d\rho\right)\left(\int_{\pi/4}^\pi\sin\varphi\,\mathrm d\varphi\right)=\boxed{\frac43(1+\sqrt2)\pi}

4 0
3 years ago
System with 3 variable. solve pleaseeee<br><br> x+4y-5z=-7<br> 3x+2y+3z=7<br> 2x+y+5z=8
7nadin3 [17]
To solve this we need to form 2 equations with only 2 variables.
x+4y-5z=-7
2x+y+5z=8
3x+5y=1

15x+10y+15z=35
6x+3y+15z=24
9x+7y=11

Now we need to use these to find x and y
9x+15y=3
9x+7y=11
8y=-8
y=-1
Therefore:
x=2
From this we can find that:
2(2)-1+5z=8
Therefore z=1
The answer is x=2, y=-1, z=1
6 0
3 years ago
Please help have a nice day please attach a file​
lesya692 [45]

Answer:

Hello

Step-by-step explanation

3 3/4 goes first on the left side then 3 1/4, 2 3/4,

2 1/2 ,1 3/4, 1 1/4, 1, 2, 3

Hope this helps

7 0
2 years ago
Read 2 more answers
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