Find the surface are of the fish tank if the base is a regular octagon with side length 0.9 units and the height of the prism is 2 units

Answer:These techniques for elimination are preferred for 3rd order systems and higher.  They use "Row-Reduction" techniques/pivoting and many subtle math tricks to reduce a matrix to either a solvable form or perhaps provide an inverse of a matrix (A-1)of linear equation AX=b.  Solving systems of linear equations (n>2) by elimination is a topic unto itself and is the preferred method.  As the system of equations increases, the "condition" of a matrix becomes extremely important.  Some of this may sound completely alien to you.  Don't worry about these topics until Linear Algebra when systems of linear equations (Rank 'n')  become larger than 2.

explanation Step-by-step explanation:ust to add a bit more information, "Elimination" Can have a variety of other interpretations.  Elimination techniques typically refer to 'row reduction' to achieve 'row echelon form.'  Do not worry if you have not heard of these terms.  They are used in Linear Algebra when referring to "Elimination techniques"

Just to add a bit more information, "Elimination" Can have a variety of other interpretations.  Elimination techniques typically refer to 'row reduction' to achieve 'row echelon form.'  Do not worry if you have not heard of these terms.  They are used in Linear Algebra when referring to "Elimination techniques"

Gaussian Elimination

Gauss-Jordan Elimination

LU-Decomposition

QR-Decomposition

These techniques for elimination are preferred for 3rd order systems and higher.  They use "Row-Reduction" techniques/pivoting and many subtle math tricks to reduce a matrix to either a solvable form or perhaps provide an inverse of a matrix (A-1)of linear equation AX=b.  Solving systems of linear equations (n>2) by elimination is a topic unto itself and is the preferred method.  As the system of equations increases, the "condition" of a matrix becomes extremely important.  Some of this may sound completely alien to you.  Don't worry about these topics until Linear Algebra when systems of linear equations (Rank 'n')  become larger than 2.

Substitution is the preferred method for 2 equations in 2 unknowns.  The constants are unimportant other than having a non-zero determinant.  It is always easy to find multiplicative factors using LCMs of one variable or the other to allow substitution into the other equation:

Example:

4X + 5Y = 9

5X -  4Y = 1

Notice that 20 is a LCM of either the X or Y variable.  So multiply the first by 4 and the second by 5 and then adding the two (Y's will drop out allowing for substitution)

4(4X + 5Y = 9)

5(5X -  4Y = 1)  

Multiplying to produce the LCM factors:

16X + 20Y = 36

25X -  20Y = 5

Adding the equations

41X = 41

X = 1

Substitution into either equation yields

Y = 1

Answer:

1/6 of a yard

Step-by-step explanation:

1/2 of a yard x 1/3 of a yard = 1/6

Answer:

D:  volume

Step-by-step explanation:

Answer:

Step-by-step explanation:

3/x=5/y

3y/x=5

y/x=5/3

Step-by-step explanation:

As the triangle is right angled :

sin of angle = 19/24

angle = 52.3⁰

Answer:

52,3°

Step-by-step explanation:

[tex]sin( \alpha ) = \frac{19}{24} [/tex]

[tex] \alpha = 52.3[/tex]

Answer:

RT = 9.200 cm

Step-by-step explanation:

[tex]RT = \sqrt{ {11}^{2} - {6}^{2} } \\ RT = \sqrt{121 - 36} \\ RT = \sqrt{85} \\ RT = 9.219 \: cm \\ RT = 9.200 \: cm[/tex]

Answer:

C

Step-by-step explanation:

Answer: 675 cubic inches of trash

Step-by-step explanation:

Hi, to answer this question, first, we have to calculate the volume of each trash can :

Volume of a rectangular prism: width x length x height

Replacing with the values given:

V = 2 x 3 x 4.5= 27 cubic inches

Since there are 25 trash cans every day, we have to multiply the volume of each one by 25.

27 x 25 =675 cubic inches of trash

Feel free to ask for more if needed or if you did not understand something.

Answer:

11232000 plates

Step-by-step explanation:

To find the number of plates that can be made, we just need to check for each space filled how many possible values it can take:

We have 3 digits that can not repeat, so the first digit has 10 possible values (all digits from 0 to 9), the second digit has 9 possible values (as one is already taken) and the third digit has 8 possible values.

For the letters, the first one has 26 possible values, the second one has 25 and the third one has 24.

So the number of different plates is the product of all these possibilities for each digit and letter:

10 * 9 * 8 * 26 * 25 * 24 = 11232000 plates

Answer:

the plot shows he had a speed of 0.20 miles but the longer he travels the slower he gets, so his last speed is 0.17 miles a minute

Step-by-step explanation:

Answer:

$350.

Step-by-step explanation:

50% translates over to 1/2, so you take the price of $700 and multiply it by 1/2. You then get $350, which is half of $700.

Answer: done is five

Step-by-step explanation:

There is five because if you can tell what is the l s what in it

Answer:

V=1/3 Bh 

Step-by-step explanation:

Answer:

[tex]381.5\,\,\,ft[/tex]

Step-by-step explanation:

Given:  Figure

To find: distance from the right center field fence to third base

Solution:

In a right angled triangle,

using Pythagoras theorem, square of hypotenuse is equal to sum of squares of base and perpendicular.

In ΔBAC,

[tex]BC^2=AB^2+AC^2\\(392)^2=x^2+(90)^2\\153664=x^2+8100\\153664-8100=x^2\\145564=x^2\\\sqrt{145564}=x\\381.5\,\,\,ft=x[/tex]

So,

distance from the right center field fence to third base is 381.5 foot.

Ans

Step-by-step explanation:

Answer:

The answer will be 7z+20x+6

First combine like terms: 7z+18+9x then you can’t really multiply it

Answer:

This is the closest thing I could get

x=15

Y=56

Step-by-step explanation:

The difference between 32 and 12 is 20

So the difference between x and 40 is 25

Between 48 and 18 its 30

And last between 21 and y is 35

Answer:

Step-by-step explanation:

substitue values in the table into the equation.

x = 2, then y = 4(2)-3 =>

y= 5

y = -3, then -3 = 4x-3 =>

x = 0

x = -1, then y = 4(-1) - 3 =>

y = -7

x = 3, then y = 4(3) -3 =>

y = 9

y = 1, then 1 = 4x - 3 =>

x = 4

now plot all of these points and create a line from them

Answer: Jaclyn spent $48

Step-by-step explanation:

3x - 34 = 14

3x = 14+34

X = 48/3 = 16

Answer:

spent 48$

Step-by-step explanation:

Answer:

answer c

Step-by-step explanation:

khan

Answer:

Step-by-step explanation:

C

Answer:

d = 52

Step-by-step explanation:

The two angles form a straight line so they are supplementary

Supplementary angles add to 180

d+128 = 180

Subtract 128 from each side

d+128-128 = 180-128

d = 52

Answer:

52

Step-by-step explanation:

so to solve this one, you have to get the value of d.

for this you need to first subtract the given angle from 180.

180-128=52

that is the value of d :) if u need any more help post a question, ill follow you!

Answer:

113.04 sq. in.

Step-by-step explanation:

Answer: A. 3

Step-by-step explanation: You can't put x and y together. There are two different variables. Then the 5, is just can't add together with another number because the numbers have a variable with it.

Please mark me brainliest bc one more to get a higher rank :)

Answer:

A. 3

Step-by-step explanation:

7x is a term

-2y is a term

5 is a term

So there are 3 terms

Answer:

i say 50%

Step-by-step explanation:

if there is an outcome of 2

then there is a 50% chance she either has normal visions or color blindness

Answer:D

Step-by-step explanation:

Answer:

A. (-4,2)

Step-by-step explanation:

taxable income is reduced

Answer: taxable income is reduced

Step-by-step explanation:

Answer:

A-square

Step-by-step explanation:

The formula for the surface area of a cube is:

SA = 6a²

where a is the length of the cube

The value of X is 7.

Look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

X = 7

-4x + 2(5x - 6) + 2x = 44

GROUP LIKE TERMS

-4x + 2x = -2x

-2x + 2(5x -6) = 44

-2x + 10x - 12 = 44

8x - 12 = 44

ADD 12 ON BOTH SIDES

8x = 56

DIVIDE 8 ON BOTH SIDES

x = 7

Answer:

7250

Step-by-step explanation:

The equation would be as follows

3500+750x=y

Between 2012 and 2007, there are 5 years, thus x=5

3500+750(5)=7250

Answer:

4 altogether

0,1 + 1, 1 = 1 RA

0,1 + 2,1 = 1 RA

0.2 +1, 2 = 1 RA

0,2 +2,2 = 1 RA

Step-by-step explanation: