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3 years ago

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

scZoUnD [109]3 years ago

3 0

Answer: X= 45

A=45

B=110

Step-by-step explanation:

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Ellis's backyard has a 6.256.256, point, 25 by 6.25\,\text{m}6.25m6, point, 25, space, m patio. She would like to build a 1.5\,\

alexandr402 [8]

Answer: 21 packages

Step-by-step explanation:

Khan Academy

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3 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

3 0

4 years ago

The table shows the number of candies packed by Machine J. The equation shows the number of candies packed by Machine K. In both

astraxan [27]

The correct answer in B) 44.
Step by step answer:
Divide 3 by 90 and you will get 30, meaning that Machine J packed 30 candies per minute. Machine K packed 26 candies per minute as it stated. In order to figure out how many more candies Machine J packed then Machine K in 11 minutes, you would need to figure out how many more candies it packed in one minute then multiply by 11. In this case Machine J packed four more then Machine K in one minute, therefore Machine J packed 44 more than Machine K in 11 minutes.
Hope this helped!

4 0

3 years ago

Write an equation of the line that passes through (-3,3) and is perpendicular to the line 2y = 8x - 6

Aliun [14]

Y=4x-3
M of new line = -1/4

y=(-1/4)x+b
3=(-1/4)(-3)+b
3=(3/4)+b
b=9/4

y=(-1/4)x+(9/4)

3 0

3 years ago

The side lengths of a triangle are 6, 8 and 12. Is this a right triangle?

Anna [14]

Answer:

No it's not. 6 to the 2nd power + 8 to the 2nd power ≠ 12 to the 2nd power

Step-by-step explanation:

If you square the shorter lengths and add them together, they add up to one hundred

6^2 + 8^2 --> 38 + 64 = 100

Once you square 12 it equals 144

144 does not equal 100. There for it can't be a right triangle. To be a right triangle, it has to have a ratio pf 3: 4: 5.

Ex: 6: 8: 10, 12: 16: 20, etc.

Hope this helps!

3 0

3 years ago