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2 years ago

A plane perpendicular to the base of a cone passes through the apex. Which shape is formed by the intersection?

Mathematics

2 answers:

worty [1.4K]2 years ago

5 0

Answer:

D) triangle

Step-by-step explanation:

The attached image may be helpful to visualizing what the cross section looks like. It is a triangle.

wel2 years ago

4 0

Answer:

Step-by-step explanation:

triangle

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it compares by both being in the even numbers

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2 years ago

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What is the pre-image of vertex A' if the image shown on

lisov135 [29]

Answer: B. (-6, 8).

Step-by-step explanation:

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2 years ago

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Solve the equation: k^2+5k+13=0

mr_godi [17]

Step-by-step explanation:

k² + 5k + 13 = 0

Using the quadratic formula which is

$x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac } }{2a} \\$

From the question

a = 1 , b = 5 , c = 13

So we have

$k = \frac{ - 5 \pm \sqrt{ {5}^{2} - 4(1)(13) } }{2(1)} \\ = \frac{ - 5 \pm \sqrt{25 - 52} }{2} \\ = \frac{ - 5 \pm \sqrt{ - 27} }{2} \: \: \: \: \: \: \\ = \frac{ - 5 \pm3 \sqrt{3} \: i}{2} \: \: \: \: \: \:$

<u>Separate the solutions</u>

$k_1 = \frac{ - 5 + 3 \sqrt{3} \: i }{2} \: \: \: \: or \\ k_2 = \frac{ - 5 - 3 \sqrt{3} \: i}{2}$

The equation has complex roots

<u>Separate the real and imaginary parts</u>

We have the final answer as

$k_1 = - \frac{5}{2} + \frac{3 \sqrt{3} }{2} \: i \: \: \: \: or \\ k_2 = - \frac{5}{2} - \frac{3 \sqrt{3} }{2} \: i$

Hope this helps you

8 0

2 years ago

The area of a square mural pointed on the side of a building is 110 square feet. What is the best estimate of the side length of

natka813 [3]

Answer:

Step-by-step explanation:

Area of a square equals to the square of its side, therefor the side of a given area for a square is the square root of the area.

$A = a^{2}\\a = \sqrt{A}\\a = \sqrt{110} = 10.48 ft$

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2 years ago

Sales tax on an item directly proportional to the cost of the items purchased. If the tax on a $400 item is $24, what is the sal

ArbitrLikvidat [17]

Answer:

$21

Step-by-step explanation:

This can be easily solved by fraction 400/24=350/x

x=$21

4 0

2 years ago