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klio [65]
3 years ago
9

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust? 8x

2 + 34; 43.6 centimeters 8x2 + 34; 45.52 centimeters 4x2 + 17; 21.8 centimeters 4x2 + 17; 22.76 centimeters
Mathematics
2 answers:
34kurt3 years ago
8 0

Answer:

b

Step-by-step explanation:

8x2 + 34; 45.52 centimeters

Leya [2.2K]3 years ago
5 0
Substituting the value of X in each of the equations.The best answer would be the equation satisfying both of the sides Which means,
Substituting the values in the second equation gives the best answer.
8(1.2)^2 + 34 = 45.52 centimeters
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Can someone please help me with this
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Answer:

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Step-by-step explanation:

The sum of the interior angles of a quadrilateral = 360°

Create an expression for the sum of all the angles and equate it to 360, then solve for x:

      ∠Q + ∠T + ∠S + ∠R = 360

⇒ 2x + 5 + x + 2x + 7 + x = 360

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⇒ 6x = 360 - 12 = 348

⇒ x = 348 ÷ 6 = 58

So now we know that x = 58, we can calculate all the angles:

m∠Q = 2x + 5 = (2 x 58) + 5 = 121°

m∠R = x = 58°

m∠S = 2x + 7 = (2 x 58) + 7 = 123°

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