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miv72 [106K]
3 years ago
15

How do I do question 6?

Mathematics
1 answer:
vekshin13 years ago
6 0
F(x)=4x+7=0
solve
4x+7=0
minus 7 both sides
4x=-7
divide by 4 both sides
x=-7/4
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A triangular pyramid and its net are shown. Rain uses Calculations below to conclude that the surface area of a triangular pyram
Harman [31]

Answer:

Rain is correct, calculates correctly, 238.5 square inches

Step-by-step explanation:

The given triangular pyramid is shown with the dimensions.

The surface area of the triangular pyramid is given by :

$A=\frac{1}{2}\left(a \times b\right) + 3\left(\frac{1}{2}\times b\times s\right)$

$A=\frac{1}{2}\left(10 \times 8.7\right) + 3\left(\frac{1}{2}\times 10\times 13\right)$

$A=43.5+(3\times 65)$

$A=43.5+195$

$A=238.5 \ \text{inche}^2$

Therefore, the surface area of the triangular pyramid is = 238.5 square inches.

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3 years ago
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3 years ago
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How many solutions does x2 - 10x=-25 have?
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Step-by-step explanation:

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Step-by-step explanation:

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