2 years ago

Given: OA⊥OB, DE tangent at DProve: ∠ECD≅∠EDC

Mathematics

1 answer:

Harlamova29_29 [7]2 years ago

5 0

Answer:

Step-by-step explanation:

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Who started the problem correctly? The problem form is (-5) - (-1 3/4).

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Answer:

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Step-by-step explanation:

We are given problem (-5) - (-1 3/4).

Mariah started the problem as (-5) + 1 - 3/4

Shane started the problem as (-5) + 1 + 3/4

We need to find who started the problem correctly.

The problem should be started by converting the mixed fraction into improper fraction i,e

$-5-(-1\frac{3}{4})\\=-5-(-1-\frac{3}{4} )\\=-5-(-\frac{7}{4})$

Now we will solve bracket by multiplying -1 with term inside the bracket i.e

$=-5+\frac{7}{4}$

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Let's compare both the procedures now:

Mariah:

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$=(-5) - \frac{1}{4}$

$=\frac{-21}{4}$

Therefore, Mariah did not start the problem correctly.

Shane:

$(-5) + 1 + \frac{3}{4}$

$= -5 + \frac{7}{4}$

$= \frac{-13}{4}$

Therefore, Shane started the problem correctly.

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