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3 years ago

PPPLLLEEEAAASSSE HHHEEELLLPPP! 14 points! Brainlliest, hearts, and stars!

Mathematics

2 answers:

WITCHER [35]3 years ago

8 0

Answer:

216

Step-by-step explanation:

puteri [66]3 years ago

4 0

Answer:

216

Step-by-step explanation:

6x6x6=216

Here is your answer

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What are the coordinates of the centroid of a triangle with vertices A(−3, 1) , B(1, 6) , and C(5, 2)

Nataly_w [17]

The correct answer is

(1,3) is the centroid
Enter (1,3) in the boxes

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3 years ago

A chef had to fill up 2 1/2 containers with mashed

skad [1K]

Answer:

3 pounds

Step-by-step explanation:

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3 years ago

Root 3 cosec140° - sec140°=4 prove that

Lorico [155]

Answer:

Step-by-step explanation:

We are to show that $\sqrt{3} cosec140^{0} - sec140^{0} = 4\\$

Proof:

From trigonometry identity;

$cosec \theta = \frac{1}{sin\theta} \\sec\theta = \frac{1}{cos\theta}$

$\sqrt{3} cosec140^{0} - sec140^{0} \\= \frac{\sqrt{3} }{sin140} - \frac{1}{cos140} \\= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\$

From trigonometry, 2sinAcosA = Sin2A

$= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\\\= \frac{\sqrt{3}cos140-sin140 }{sin280/2}\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{2sin280}\\\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{sin280}\\since sin420 = \sqrt{3}/2 \ and \ cos420 = 1/2 \\ then\\\frac{4(sin420cos140-cos420sin140) }{sin280}$

Also note that sin(B-C) = sinBcosC - cosBsinC

sin420cos140 - cos420sin140 = sin(420-140)

The resulting equation becomes;

$\frac{4(sin(420-140)) }{sin280}$

= $\frac{4sin280}{sin280}\\ = 4 \ Proved!$

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2 years ago

A straight line that is parallel to one of the sides of a given triangle intersects its other two sides (or their extensions) an

timurjin [86]

Answer:

We know that this triangle is similar because it will have all of the same angles as the first triangle. This is because two parallel lines cut by a transversal will create the same angles. In addition, they share the final angle because we are not changing that angle. Therefore, all 3 are the same, which makes them similar triangles.

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3 years ago

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Which property is illustrated by the following equation? - 10 + 8 = 8 + ( - 10 )

Snowcat [4.5K]

I believe it is commutative property cause the numbers didn't change instead they just switched places in the equation.

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3 years ago