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3 years ago

PLEASE HELP ME ON THIS !!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Nastasia [14]3 years ago

3 0

Answer:

I don't know what the answer is but i'm going to try and work it out, hold on one min

Step-by-step explanation:

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A composition of reflections over parallel lines is the same as a __________. A. translation B. rotation C. glide reflection D.

enyata [817]

Answer: A

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

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

3 0

3 years ago

Which value of a would make the following expression completely factored?

Margarita [4]

Answer:

when it ur first question and u make it hard

Step-by-step explanation:

Make it easy btw this is your teacher

6 0

3 years ago

Need help with number 3

MAVERICK [17]

Vertical angles are always equal. The vertical angles are the ones opposite each other. Therefore x would equal 40.

5 0

3 years ago

Daniel borrows $2,500 at 6% simple interest for 5 years. How much is daniel going to pay in interest. May I please get help I ha

Sergio039 [100]

Answer:

2500 x 6/100 = 150

150 x 5 = 750

2500 + 750 = 3 250

Step-by-step explanation:

You first have to determine the interest for one year. We know that a percentage means a 100 so we are going to use 6/100. You then have to multiple that by the original amount, you will then get your answer. After obtaining your answer your will multiple it by the number of years which is 5, once you get your answer add it to the original amount. Then you are all set.

5 0

3 years ago