3 years ago

Plz help me with 18 is not -0.95

Mathematics

1 answer:

vesna_86 [32]3 years ago

6 0

Answer:

Please refer to the attachment.......

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If two sides of a triangle measure 12 and 7, which cannot be the perimeter of the triangle?

ser-zykov [4K]

Hi,
Let assume x the 3th side.
x<12+7==> x<19
12<x+7==>x>5
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4 years ago

What is the length and width of a room that is 60 square meters and has a perimeter of 32 meters

AleksAgata [21]

L = lenght
W = width

$L * W = 60 \\
2L + 2W=32\\\\
L = \frac{32-2W}{2}\\
\frac{32-2W}{2}*W = 60\\
(16-W)*W = 60\\
-W^{2} + 16W -60 = 0\\\\

d = 16^{2} - 4*1*60 = 256 - 240 = 16 \\\\
W1 = \frac{-16+\sqrt{16}}{-2} = \frac{-12}{-2} = 6\\
W2 = \frac{-16-\sqrt{16}}{-2} = \frac{-20}{-2} = 10\\

L1 = 10\\
L2 = 6\\
$

so

{L,W} = {6,10} or {10,6}

but L > W so

L = 10
W = 6

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ArbitrLikvidat [17]

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krok68 [10]

Answer:

Step-by-step explanation:

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2x + 28 = 180

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