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den301095 [7]
2 years ago
12

What Is the area in a triangle 9m 11m?​

Mathematics
1 answer:
anzhelika [568]2 years ago
8 0

Answer:

49.5

Step-by-step explanation:

area of triangle = (b x h) / 2

9 x 11 = 99

99 / 2 = 49.5

Hope this helps!

- profparis

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Consider the surface f (x comma y comma z )f(x,y,z)equals=negative 2 x squared plus 2 y squared minus 3 z squared plus 3 equals
trapecia [35]

Answer:

a) (8,8,-6)

b) 4x+4y+3z = -3

Step-by-step explanation:

a)

The surface is given by the equation  

f(x,y,z) = 0 where

f(x,y,z)=-2x^2+2y^2-3z^2+3

The gradient of this function is the vector

(\frac{\partial f}{\partial x},\frac{\partial f}{\partial y},\frac{\partial f}{\partial z})=(-4x,4y,-6z)

If we evaluate it in the point P = (-2,2,1) we obtain the point

(8,8,-6)

b)

The vectors with their tails at P are of the form  

(-2,2,1)-(x,y,z) = (-2-x, 2-y, 1-z)

as they must be orthogonal to the gradient, they must be orthogonal to the vector (8,8,6) so their inner product is 0

(-2-x,2-y,1-z)\cdot(8,8,6)=0\Rightarrow -16-8x+16-8y+6-6z=0\Rightarrow 4x+4y+3z=-3

and the equation of the desired plane is

4x+4y+3z = -3

3 0
3 years ago
25 equivalent expressions to 8x+12
-Dominant- [34]
Here are some
1 ) 4 ( x - 3 )
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8 0
3 years ago
Box A has a volume of 32 cubic meters. Box B is similar to box A. To create box B, box A's dimensions were tripled. What is the
likoan [24]
We are given with the volume of 32 cubic meters. The dimension of the box is obtained by taking the cubic root of 32 which is 3.1748 x 3.1748 x 3.1748 meters. When the dimensions are tripled, 9.5244 x 9.5244 x <span>9.5244  meters. The volume is a ) 864 cubic meters. </span>
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3 years ago
4c - 6 = 2 what is the answer to this equation?​
Rom4ik [11]

Answer:

2

Step-by-step explanation:

add 6 to both sides and it becomes 4c=8 divide 4 by both sides and it becomes c=2

7 0
3 years ago
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What is 1/6 + 1/4 + 1/3
IgorC [24]
The answer is 9/12

Brainliest pls
6 0
3 years ago
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