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GarryVolchara [31]

2 years ago

12

En la resolución de problemas para verificar la respuesta se debe de tener en cuenta el resultado y los datos desconocidos verda

dero o falso

1 answer:

kvv77 [185]2 years ago

7 0

Answer:ha

Step-by-step explanation:

I did something

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galina1969 [7]

Answer:

X .

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7 0

2 years ago

In triangle ABC, a = 9, c = 5, and angle B = 120°. Find the measure of angle A to the nearest degree. Show your work.

slamgirl [31]

<u>Answer:</u>

Angle A = 39°

<u>Step-by-step explanation:</u>

We are given that there is a triangle ABC where a = 9, c = 5 and angle B = 120° and we are to find the measure of angle A.

But first we need to find the side b using the law of cosine:

$b^2 = a^2 + c^2- 2a*c*cos(120)$

$b^2 = 81 + 25 - 2*9*5*(-0.5)$

$b=\sqrt{151}$

Now finding angle A using law of cosine:

$cos(A) = \frac{b^2+c^2-a^2}{2b*c}$

$cos(A) = \frac{151+25-81}{2*12.29*5}$

$cos A=0.7730$

$A=39.38$

Therefore, the measure of angle A = 39°.

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2 years ago

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melomori [17]

Answer:

c

Step-by-step explanation:

c, because if you're doing a percentage of kids who bring lunches you need to do every grade level and every student to get a proper percentage

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2 years ago

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Igoryamba

39. FALSE
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3 years ago

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What is the slope of the line that passes through the points (-4, 8) and (−14,8)?

Lana71 [14]

Answer:

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Step by Step Explanation:

7 0

2 years ago