2 years ago

1 ) Considere a expressão algébrica:

1 answer:

7 0

A) i think is correct andewmer

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gladu [14]

Step-by-step explanation:

the second equation should be multiplied by 9

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2 years ago

viktelen [127]

Answer:

The answer is b) 2(2x-4) and c)

Step-by-step explanation:

Okay lets try a) 2(2x-6)

2 x 2x - 2 x 6= 4x-12

b) 2(2x-4)

2 x 2x - 2 x 4=4x-8

c) : x-8+3x

x+3x-8=4x-8

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2 years ago

11Alexandr11 [23.1K]

Answer:

$\cos{A}=\pm\sqrt{\dfrac{1+\cos{x}}{2}}$

Step-by-step explanation:

$\cos{A}=\cos{\frac{x}{2}}=\pm\sqrt{\dfrac{1+\cos{x}}{2}}$

Apparently, you're supposed to recognize that the formula tells you the value of cos(x/2).

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3 years ago

den301095 [7]

Answer:

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Step-by-step explanation:

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3 years ago

liberstina [14]

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2 years ago