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3 years ago

Evaluate the expression of 1 + |9 + 2|

Mathematics

2 answers:

Colt1911 [192]3 years ago

7 0

Answer:

Step-by-step explanation:

$1+|9+2|\\1+|11|\\1+11\\12$

Lady_Fox [76]3 years ago

5 0

Answer: 12

Step-by-step explanation:

1 + |9 + 2|

1+ 11 = 12

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4 years ago

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4 years ago

Need help use screenshot(SAT Prep) In △ABC, AB = BC = 20 and DE ≈ 9.28. Approximate BD. bd equals?

Lilit [14]

Answer:

5.36

Step-by-step explanation:

Given that:

<BAD = <CAE, therefore, BD = EC

Let's take x to be the length of BD = EC

BD + DE + EC = BC

BC = 20,

BD = EC = x

DE ≈ 9.28

Thus,

x + 9.28 + x = 20

x + x + 9.28 = 20

2x + 9.28 = 20

Subtract 9.28 from both sides

2x + 9.28 - 9.28 = 20 - 9.28

2x = 10.72

Divided both sides by 2 to solve for x

$\frac{2x}{2} = \frac{10.72}{2}$

$x = \frac{10.72}{2}$

$x = 5.36$

BD ≈ 5.36

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4 years ago