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2 years ago

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Mathematics

1 answer:

Ksju [112]2 years ago

7 0

Answer:

BF = 18

Step-by-step explanation:

In triangle BCD, H is the Centroid.

Centroid of a triangle divides the median in the ratio 2 : 1.

Therefore, BH : HF = 2 : 1

Let BH = 2x & HF = x

Since, HF = 6.... (given)

So, x = 6

2x = 2*6 = 12

BH = 12

Now,

BF = BH + HF = 12 + 6

BF = 18

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Elodia [21]

Answer:

The area of the resulting cross section is $78.5\ m^{2}$

Step-by-step explanation:

we know that

The resulting cross section is a circle congruent with the circle of the base of cylinder

therefore

The area is equal to

$A=\pi r^{2}$

we have

$\pi=3.14$

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substitute the values

$A=(3.14)(5)^{2}=78.5\ m^{2}$

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2 years ago

Does the quadratic have a maximum or minimum

STALIN [3.7K]

Answer:

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Step-by-step explanation:

Parabola equation:

The equation of a parabola has the following format:

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If $a < 0$ , that is, x² is multiplied by a negative number, the function has a maximum value and the parabola opens down.

In this question:

$y = -x^2 - 2x + 3$

From the graph, we already see that it opens down and has a max, and analitically, since $a = -1 < 0$ , this is confirmed. The correct answer is given by option b.

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2 years ago

V=1/3 pi r squared h what is h?

Sveta_85 [38]

Step-by-step explanation:

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root(V ÷ 1/3 pi) = h

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2 years ago

Find the definding set of the function: y= √(1 - Cos3x ) / (1 + Sin4x )

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