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2 years ago

14

A triangle has a perimeter of 77 centimeters and one side is 25 centimeters. The other

1 answer:

Vitek1552 [10]2 years ago

8 0

Answer:

36 cm

Step-by-step explanation:

Let x represent the multiplier of the ratio units. Then the perimeter is the sum of the side lengths:

77 = 25 + 4x +9x

52 = 13x . . . . . . . . subtract 25

x = 4 . . . . . . . . . divide by 13

4x = 4(4) = 16 . . . . find the other side lengths

9x = 9(4) = 36

The side lengths are 25 cm, 16 cm, 36 cm. The longest side is 36 cm.

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Notice the picture below, see the length "l"?

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l=\frac{11}{4}w\\
Area=180
\end{cases}\\\\
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180=\cfrac{11}{4}w\times w$

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2 years ago

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Step-by-step explanation:

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2 years ago

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the sum of the first n terms of a sequence is 20 - 10 / 2 ^ n - 1 find the sum of the first five terms

Travka [436]

Answer:

$S_5=\dfrac{170}{9}$

Step-by-step explanation:

Given that,

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Put n = 5,

$S_5=20-\dfrac{10}{2(5)-1}\\\\=20-\dfrac{10}{10-1}\\\\=20-\dfrac{10}{9}\\\\=\dfrac{170}{9}$

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2 years ago

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Montano1993 [528]

Answer:

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Step-by-step explanation:

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