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3 years ago

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A triangle has side lengths of (10x + 7y) centimeters, (3x + 3z) centimeters, and (8z +10y) centimeters. Which expression repres

ents the perimeter, in centimeter of the triangle?
a:20yz+21xz
b:13x+10y+18z
c:6xz+18yz+17xy
d:13x+17y+11z

1 answer:

Kay [80]3 years ago

8 0

Answer:

(D) 13x + 17y + 11z

is right answer

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3 1/4 - 1 3/5 | please help !!

Luba_88 [7]

Answer:

Step-by-step explanation:

Step: 1: Convert mixed fraction to improepr fraction.

Step: 2 : Find the LCM of 4 , 5 = 20

Step 3: Find equivalent fractions with denominator as 20

Step 4: Now subtract.

$3\dfrac{1}{4}-1\dfrac{3}{5}=\dfrac{13}{4}-\dfrac{8}{5}$

$\sf = \dfrac{13*5}{4*5}-\dfrac{8*4}{5*4}\\\\\\ = \dfrac{65}{20}-\dfrac{32}{20}\\\\\\ = \dfrac{65-32}{20}\\\\\\ = \dfrac{33}{20}\\\\ \\ = 1 \dfrac{13}{20}$

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Step-by-step explanation:

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Answer:

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