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olga_2 [115]
3 years ago
10

Can someone help me with this?

Mathematics
1 answer:
Mandarinka [93]3 years ago
4 0

Answer:

Step-by-step explanation:

Area of rectangle = length * width

                             = (x + 4) (5x)

                             = x *5x + 4 *5x

                            = 5x² + 20x

Perimeter of rectangle = 2*(length + width)

                                     = 2*(x + 4 + 5x)

                                     = 2*(6x + 4)

                                   = 2*6x + 2 *4

                                     = 12x + 8

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If S is the midpoint of RT , RS=8x+11 and ST =14x-1 find x
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Answer:

From the given, we establish this relationship:

RS + ST = RT

RS = ST since S is the midpoint of RT

Thus, let's use RS = ST to find x,

By substituting the given expressions:

RS = ST

8x + 11 = 14x - 1

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thus,

x = 2

4 0
3 years ago
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C

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the answer would be d

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En la expresion algebraica x², ¿que indica el número 2 en la base x?
tino4ka555 [31]

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