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skelet666 [1.2K]

1 year ago

10

Which expression is equivalent to -0.25(16m + 12)? PLEASE HELP

2 answers:

WINSTONCH [101]1 year ago

7 0

Step-by-step explanation:

<em><u>→</u></em><em><u> </u></em><em><u>-</u></em><em><u>0</u></em><em><u>.</u></em><em><u>2</u></em><em><u>5</u></em><em><u>(</u></em><em><u>1</u></em><em><u>6</u></em><em><u>m</u></em><em><u>+</u></em><em><u>1</u></em><em><u>2</u></em><em><u>)</u></em>

<em><u>→</u></em><em><u> </u></em><em><u>(</u></em><em><u>-</u></em><em><u>0</u></em><em><u>.</u></em><em><u>2</u></em><em><u>5</u></em><em><u>×</u></em><em><u>1</u></em><em><u>6</u></em><em><u>m</u></em><em><u>)</u></em><em><u>+</u></em><em><u>(</u></em><em><u>-</u></em><em><u>0</u></em><em><u>.</u></em><em><u>2</u></em><em><u>5</u></em><em><u>×</u></em><em><u>1</u></em><em><u>2</u></em><em><u>)</u></em>

<em><u>→</u></em><em><u> </u></em><em><u>(</u></em><em><u>-4m)</u></em><em><u>+</u></em><em><u>(</u></em><em><u>-</u></em><em><u>3</u></em><em><u>)</u></em>

<em><u>→</u></em><em><u> </u></em><em>-4m-3</em><em>. </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>Answer</em>

jok3333 [9.3K]1 year ago

3 0

Answer:

-4m-3

Step-by-step explanation:

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2 years ago

Find the solutions for a triangle with a = 16, c =12, and B = 63º.

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Answer:

b. A = 71.6°; C = 45.40°; b =15.0

Step-by-step explanation:

The missing values can be found with the help of the Law of Cosine and properties of triangles:

Side b (Law of Cosine)

$b = \sqrt{a^{2}+c^{2}-2\cdot a \cdot c \cdot \cos B}$

$b = \sqrt{16^{2}+12^{2}-2\cdot (16)\cdot (12) \cdot \cos 63^{\circ}}$

$b \approx 15.022$

Angle A (Law of Cosine)

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$\cos A = - \frac{16^{2}-15.022^{2}-12^{2}}{2\cdot (15.022)\cdot (12)}$

$\cos A = 0.315$

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$C = 180^{\circ} - 63^{\circ} - 71.639^{\circ}$

$C = 45.361^{\circ}$

Hence, the right answer is B.

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