2 years ago

1. Complete the square to form a perfect square trinomial. 8x + x² + __

Mathematics

1 answer:

Usimov [2.4K]2 years ago

4 0

1) x^2 + 8x + 16 = (x+4)^2

Answer: C. 16

2) x^2 + 4x + 4 = (x+2)^2

Answer: B. 4

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Rewrite without absolute value sign for different values of x: y=− 2x+5 + 2x−5 if x<−2.5; if x>2.5; if −2.5≤x≤2.5

valentina_108 [34]

Answer:

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Step-by-step explanation:

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Ugo [173]

-1<9+n<17

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2 years ago

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Oksi-84 [34.3K]

Answer:

A = 58.7 degrees

B = 66.9 degrees

C = 34.1 degrees

Step-by-step explanation:

For <A:

Tan A = $\frac{opposite}{adjacent}$

Tan A = $\frac{23}{14}$

Tan A = 1.6

A = $Tan^{-1} 1.6$

A = 58.7 degrees

For <B:

Sin B = $\frac{opposite}{hypotenuse}$

Sin B = $\frac{23}{25}$

Sin B = 0.92

B = $Sin^{-1} 0.92$

B = 66.9 degrees

For <C:

Sin C = $\frac{opposite}{hypotenuse}$

Sin C = $\frac{14}{25}$

Sin C = 0.56

C = $Sin^{-1}0.56$

C = 34.1 degrees

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