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TiliK225 [7]
3 years ago
11

Pleaseee I needed the answerrr now​

Mathematics
1 answer:
loris [4]3 years ago
5 0

Step-by-step explanation:

Given,

a=3,b=2,c=5

a)a(b+c)

=3(2+5)

=3×7

=21.

B)2ac^2

=2×3×(5)^2

=6×25

=150

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Find the perimeter of pentagon STUVW WITH VERTICES S(0,0) T(3,-2) U(2,-5) V(-2,-5) W(-3,-2)
andrew11 [14]
Use the distance formula.

\sqrt{( x_{2} - x_{1} )^2 + (y_{2} - y_{1})^2}

 
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~3.6

Points S and T
\sqrt{(3 - 0)^2 + (-2 - 0)^2}

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Points T and U
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\sqrt{(1)^2 + (3)^2}

\sqrt{1+9}

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Points U and V
\sqrt{(2+2)^2 + (-5 + 5)^2}

\sqrt{(4)^2 + (0)^2}

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Points V and W
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3 years ago
the length of a rectangle is 3 units shorter than one -third of the width, x. Which expression represents the perimeter of the r
Mariana [72]

Answer:

A) \frac{8}{3} x - 6

Step-by-step explanation:

Let the width of the rectangle be x units.

\therefore \: length \: of \: rectangle =  \frac{1}{3} x - 3 \\ Perimeter \: of \: rectangle  = 2(l + w) \\  = 2  \bigg( \frac{1}{3} x - 3 + x \bigg)\\  = 2  \bigg( x + \frac{1}{3} x - 3 \bigg)\\  = 2  \bigg(  \frac{3x + x}{3}  - 3 \bigg)\\  = 2  \bigg(  \frac{4x}{3}  - 3 \bigg) \\  = 2  \bigg(  \frac{4x}{3}  - 3 \bigg) \\  =   \frac{2 \times 4x}{3}  -2 \times  3  \\  \purple{ \bold{{Perimeter \: of \: rectangle   =  \frac{8}{3} x - 6}}}

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