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4 years ago

HELP PLEASE ANSWER ASAP 20 POINTS I NEED A CORRECT ANSWER

Mathematics

1 answer:

Serjik [45]4 years ago

5 0

Answer:

$-4\frac{1}{9}$

Step-by-step explanation:

According to the Order of Operations [GEMS\BOMDAS\PEMDAS etc.] Subtraction & Addition are evaluated after Division & Multiplication:

$\frac{8}{9} + -\frac{\frac{5}{6}}{\frac{1}{6}} = \frac{8}{9} - 5 = \frac{8}{9} - \frac{45}{9} = -\frac{37}{9} = -4\frac{1}{9}$

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julsineya [31]

So the scale is 3/4 cm for every 6 meters

So if you have 8 cm, we want to find the dimension of the actual wall

convert cm to meters

0.75 cm = 0.0075 meters

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Cross Multiply

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4 years ago

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:

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)

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

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4 years ago

The average temperature at the South Pole is -49.62°C, and the average temperature at the North Pole is -34.68°C. How much highe

Solnce55 [7]

Answer:

14.94 degrees higher

Step-by-step explanation:

all you gotta do is find the difference, -49.62 minus -34.68, i suggest a calculator for things that are more difficult to do in your head

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3 years ago

1/2x^3 = 125/2<br><br><br> Help please (:

earnstyle [38]

well idk lol but you magbe have it correct???

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4 years ago

Find the LCM of 4 and 42

Misha Larkins [42]

Answer:

Step-by-step explanation:

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4 years ago