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andrey2020 [161]
2 years ago
9

This is a lot but please help me I’ll mark u as brilliant

Mathematics
1 answer:
givi [52]2 years ago
7 0

Answer:

see below

Step-by-step explanation:

2:

# of sides = 3

# of vertices = 3

name of shape: triangle

3.

# of sides = 4

# of vertices = 4

name of shape: quadrilateral

4.

# of sides = 5

# of vertices = 5

name of shape: pentagon

5.

# of sides = 6

# of vertices = 6

name of shape: hexagon

6.

# of sides = 8

# of vertices = 8

name of shape: octagon

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Write a matrix to represent the system of equations.
ioda

Answer:

7   -1   6  |  -8

7  -5   7   |  1

0    1    -4 | -5

Step-by-step explanation:

Note that there are four columns in this system, representing the variables x, y and z and constants.  So the given matrix pattern is appropriate:  It has three columns for the coefficients of x, y and z and one column for the constants.

We need only identify the coefficients and transfer them into the appropriate boxes of the matrix pattern.

We get:

7   -1   6   -8

7  -5   7     1

0    1    -4  -5

7 0
2 years ago
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How do you find the area of a parallelogram?
hichkok12 [17]

Answer:

1/2 bh

Step-by-step explanation:

4 0
3 years ago
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Sinea thinks that the fully factored form of the expression (x^4-1) is (x^2-1)(x^2+1). Is she correct? Explain.
iVinArrow [24]

Answer:

No. See below.

Step-by-step explanation:

( {x}^{4}  - 1)

Use the following formula (Difference of Two Squares)

{x}^{2}  -  {y}^{2}  = (x + y)(x  - y)

( {x}^{4}  - 1) = ( {x}^{2}  + 1)( {x}^{2}  - 1)

We are not done yet. As we can still factor the expression which is x²-1 by using the same formula.

( {x}^{2}  + 1)(x + 1)(x - 1)

This is the fully factored form.

3 0
3 years ago
Can anyone plzs help me
34kurt

Answer:

One is 3 to 4th power

(3 x 3) x (3 x 3)

Step-by-step explanation:

the other is

3 to 3rd power divided by nine to the fourth power...

(3 x 3) x 3 = 27

(9 x 9 ) x (9 x 9) = 2187

2187 / 27 = 81

8 0
3 years ago
Find the surface area of the rectangular prism below.
dusya [7]

Step-by-step explanation:

Plz attach a pic there is no pic of rectangular prism attached

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