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Juli2301 [7.4K]
1 year ago
7

GIVEN ∠ABC ≅ ∠DEF ∠GHI ≅ ∠DEF m∠ABC=m∠GHI

Mathematics
1 answer:
Alenkinab [10]1 year ago
5 0

By the substitution property of equality, measure of ∠ABC ≅ measure of ∠GHI (m∠ABC=m∠GHI)

<h3>Substitution property of equality</h3>

The <em>substitution property of equality</em> states that if x = y, then x can be substituted in for y in any equation, and y can be substituted for x in any equation

From the given information, we have that

∠ABC ≅ ∠DEF

and

∠GHI ≅ ∠DEF

By the substitution property, ∠ABC can be substituted for ∠DEF in the second equation

That is,

∠GHI ≅ ∠ABC

∴  ∠ABC ≅ ∠GHI

Hence, measure of ∠ABC ≅ measure of ∠GHI (m∠ABC=m∠GHI)

Learn more on Substitution property of equality here: brainly.com/question/2279838

#SPJ1

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Answer:

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Step-by-step explanation:

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Now find

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Answer:

Dwight will take 6 hours to finish the job alone and Joe will take 3 hours to finish the job alone.

Step-by-step explanation:

Let us assume the time taken by Dwight to split a cord of firewood  = K hrs

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As, Joe uses 3 LESS hours then Dwight.

So, the time taken by Joe to split a cord of firewood  = (K- 3) hrs

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So, the per hour rate of BOTH of them  = (\frac{1}{2})

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Now, solving for the value of K , we get:

(\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})\\\implies  \frac{(K-3) + K}{K (K-3)}  = (\frac{1}{2})\\\implies 2(2K -3) = K^2 - 3K\\\implies k^2 - 3K -4K +6 = 0\\\implies K^2 - 7K  + 6=  0\\\implies K^2 - 6K - K  + 6=  0\\\implies K(K-6) -1(K - 6)=  0\\\implies (K-6)(K-1) = 0

Implies either K = 6 Or K = 1

But if K = 1, (K-3)  = 1- 3  = -2 hours would be A CONTRADICTION.

⇒ K  = 6 hours

Hence, Dwight will take 6 hours to finish the job alone and Joe will take (k-3) = (6-3) = 3 hours to finish the job alone.

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Step-by-step explanation:

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