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leva [86]
3 years ago
12

Which expression is equivalent to −4.6+(−0.4)+(−7.2) ?

Mathematics
2 answers:
Volgvan3 years ago
7 0

I took the test it's −4.6−(0.4+7.2)

den301095 [7]3 years ago
4 0
The 3rd one
-4.6-(0.4+7.2)
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Step-by-step explanation:

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In the figure below, m∠1 = x and m∠2 = x - 4. Which statement could be used to prove that x = 47?
dangina [55]

The answer is C) m∠1 + m∠2 = 90

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Basically you know than ∠3 is 90° ... And a straight line is 180° ..                            So technically we can just find out 180-90 is 90(the other angle 1 + 2).

To get 90° we'll add ∠1 and ∠2 in other ways, like technical thinking-

So you already know adding ∠1 and ∠2 is 90°. So ∠1 + ∠2 = 90°

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