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ludmilkaskok [199]
2 years ago
6

What is the solution to 3x2 + 4x + 8 = 0

Mathematics
1 answer:
Fed [463]2 years ago
6 0

Answer:

-2±2i√5 / 3

Step-by-step explanation:

You can't factor this equation, so you use the quadratic formula to solve it, which is

-b±√b-4ac/2a

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What is the volume of a right circular cone if the circumference of the base is 125.6 ft and the height is 75 ft.?
Eddi Din [679]

Answer:

Hence the volume of the cone is 31384.52 cubic feet

Step-by-step explanation:

We must first need to understand how the volume of a cone is calculated.

It is simply calculated by multiplying the base area of the cone by the height, and dividing the result by 3.

This is :

Volume of cone = \frac{\pi r^2 h}{3}

we are not given the base area of the cone. However, we are given the circumference from which we can get the radius of the base.

Circumference =

2 \pi r=125.6ft\\r =125.6/2 \pi=19.99ft

hence the volume of the cone is

\frac{\pi (19.99)^2 75}{3}=31384.52ft^{3}

Hence the volume of the cone is 31384.52 cubic feet

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2 years ago
How are the slopes of parallel lines and perpendicular lines related?
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Answer:

Let's see what you can do with parallel and perpendicular. In other words, the slopes of parallel lines are equal. Note that two lines are parallel if their slopes are equal and they have different y-intercepts. In other words, perpendicular slopes are negative reciprocals of each other

8 0
3 years ago
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A rectangular ballroom is being carpeted. The room measures 30 feet by 25 feet. If the carpet costs $3.00 per square foot, then
Taya2010 [7]

Answer:

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30 x 25 = 750 -> area

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31/45


Hope this helps!!!!!
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