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Margaret [11]
2 years ago
6

C is directly proportional to D, when C-125 and D=5.

Mathematics
1 answer:
malfutka [58]2 years ago
8 0
C=K x D
125= k x 5 so k= 125/5 = 25

answer is C= 25D
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Find a set of parametric equations for y= 5x + 11, given the parameter t= 2 – x
Sati [7]

Answer:

x = 2-t and y = -5\cdot t +21

Step-by-step explanation:

Given that y = 5\cdot x + 11 and t = 2-x, the parametric equations are obtained by algebraic means:

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2) y = 5\cdot x +11 Given

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5) y = [5\cdot (-1)^{-1}]\cdot [(-1)\cdot x]+11 Associative property

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7) y = -5\cdot (-x+0)+11 Modulative property

8) y = -5\cdot [-x + 2 + (-2)]+11 Existence of additive inverse

9) y = -5 \cdot [(2-x)+(-2)]+11 Associative and commutative properties

10) y = (-5)\cdot (2-x) + (-5)\cdot (-2) +11 Distributive property

11) y = (-5)\cdot (2-x) +21 (-a)\cdot (-b) = a\cdot b

12) y = (-5)\cdot t +21 By 1)

13) y = -5\cdot t +21 (-a)\cdot b = -a \cdot b/Result

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17) 0+x = (2 + 0) +(-t) Associative property

18) x = 2-t Associative and commutative properties/Definition of subtraction/Result

In consequence, the right answer is x = 2-t and y = -5\cdot t +21.

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3 years ago
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Vikki [24]

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gayaneshka [121]

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8 0
3 years ago
Read 2 more answers
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