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brilliants [131]
3 years ago
6

Serena is making a model of the Egyptian pyramid. The square base has sides that are all 4.6 in. Each of the triangular faces ha

s a base or 4.6 and a height of 4 in. How much paper would it take to cover the entire pyramid
Mathematics
1 answer:
Helen [10]3 years ago
4 0

Answer:

56.96 square inches

Step-by-step explanation:

The amount of paper is the surface area. To find the surface area, calculate the area of each shape and add it together, A pyramid has 1 square and 4 triangles in its net,

Area of square is A=s*s=4.6*4.6= 21.16

Area of a triangle is A= 1/2 b*h = 1/2 (4.6)(4) = 9.2.

There are four equal triangles so together there area is 4*9.2 = 36.8.

Add the square to it and you have the surface area of the pyramid.

36.8 + 21.16 = 57.96

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X-1/x-2+x+3/x-4=2/(x-2).(4-x)
Varvara68 [4.7K]

The given equation x-1/x-2+x+3/x-4=2/(x-2).(4-x) is correct. the answer is proved.

According to the statement

we have given that the equation and we have to prove that the given answer is a correct answer for those equivalent equation.

So, The given expression are:

\frac{x-1}{x-2} +\frac{x+3}{x-4} = \frac{2}{(x-2).(4-x)}

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So, For this

\frac{x-1}{x-2} +\frac{x+3}{x-4}

\frac{({x-1}) ({x-4}) +({x+3})({x-2})} {(x-2) (x-4)}

Then the equation become

\frac{x^{2} -4x -x +4 + x^{2} -2x + 3x -6 }{(x-2) (x-4)}

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2x^{2} - 4x -2 / (x-2) (x-4)

Now take 2 common from answer then equation become

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Hence proved.

So, The given equation x-1/x-2+x+3/x-4=2/(x-2).(4-x) is correct. the answer is proved.

Learn more about equations here

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3 0
1 year ago
What is the equation of the line that passes through (-5,6) and has an undefined slope?
lianna [129]

Hello from MrBillDoesMath!

Answer:     x = -5

Discussion:

The line has an undefined slope. This implies the line is vertical and its equation is like "x = a" for some constant "a", We are told the line passes through  (-5,6) so the first coordinate, -5, is the "a" value we need.

Thank you,

MrB

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3 years ago
PLS HELP!! LOOK AT MY QUESTIONS IF YOURE GOOD WITH GRAPHING PLS!!
Stella [2.4K]

Step-by-step explanation:

I think it might be just mights be letter C.-4x-5

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