112 Answered Questions for the topic Parabolas

10/06/19

#### Using the given information write the equations of the parabolas:(3 answers a, b, c )

a)The parabola has the focus at (3, 12) and the vertex at (−2, 12).b)The parabola has the focus at (0, –5) and the directrix at x=14.c)The parabola has x-intercepts (1, 0) and (3, 0), and...
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08/20/18

#### If vertical cables are required every 6 m along the roadway, how much cable is needed for the entire bridge?

Hello, I need help to solve this problem.
The height of a suspension cable above the roadway of a new suspension bridge, with two equally tall towers, is described by the equation y = 0.05(x -...
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08/04/18

#### If started 432 feet off the ground, When does the ball reach its max height? What is the max height? When will it returns to the ground?

H=-16^2t+24t+432

06/23/18

#### y=2x^-10x need to find the x intercepts of each parabola

My son is stressing over his maths exam, I have no idea how to help.

06/06/18

#### diffrence b/w hper¶ bola

In a parabola, a line passing through the focus and perpendicular to the directrix is called an “axis of symmetry.” When the parabola is intersected by the point on the “axis of symmetry,” it is...
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05/15/18

#### I need to find a formula for a parabola with the vertex at (0,5) and an x-intercept at (5,0)

I need to find a formula of a parabola with the vertex at (0,5) and an x-intercept at (5,0)

04/03/18

#### how do I do this please respond quickly

in algebra we have a project regarding parabolas. we had this equation y=-x^2-2x+15. what are the roots of this equation and how do I figure that out. also what are 3 points i should plot on the...
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03/21/18

#### An office supply store sells about 8 graphing calculators per month for $120 each. (cont. in description)

For each $6 decrease in price, the store expects to sell eight more calculators.The revenue from calculator sales is given by the function R(n) = (unit price)(units sold), or R(n) = (120 - 6n)(80 +...
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03/19/18

#### Graph the parabola y=1/3x^2

To graph the parabola, plot the vertex and four additional points, two on each side of the vertex. Then click on the graph icon

03/17/18

#### How to solve this?

Identify the slope of the line that passes through the points of the parabola given by y = x2 + 4x + 3 when x = 0 and x = 4. I know the answer is 8, but I need an explanation.

02/13/18

#### What is the height of the arch 15m from either end of the bridge?

A bridge form a parabolic arch. The span of the arch is 60m and its centre is 10m above either end. What is the height of the arch 15m from either end of the bridge?

01/14/18

#### What is the value of a parabola with a vertex (3,-3) and the point (7,-19) in on the parabola

What is the value of a parabola with a vertex (3,-3) and the poy(7,-19) is on the parabola

12/14/17

#### Determining the equation

After a football is kicked it reaches a maximum height of 14 meters and it hits the ground 32 meters from where it was kicked.
create an equation that represents the path of the football.

09/24/17

#### use the information provided to write the vertex form equation of each parabola. vertex:(5,6) y-intercept: 31

use the information provided to write the vertex form equation of each parabola.

09/19/17

#### a parabola shifted 9 units to the left and 7 units down

A parabola shifted 9 units to the left and 7 units down

08/17/17

#### I have a question involving simultaneous equations to find points on lines.

the two equations are as follows: y=3x^2-2x-20 and y=2x-5
You have to substitute one equation into another work out the two answers and then use the answers sub them into one of the...
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08/02/17

#### No real zeros in quadratic functions y=x^2+bx+c

Consider a family of quadratic functions y=x^2+bx+c where b and c are integers between 1 and 8 inclusive. How many of these families have no real zeros?

07/31/17

#### A student estimated based on the video that the ball left my hand

A student estimated based on the video that the ball left my hand 1.62 meters off the ground, and after 0.6 seconds the ball reached the maximum height of 3.25 meters.Use this information to find...
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07/24/17

#### How do find the equation of the parabola given the vertex, and both x intercepts?

I am trying to find a equation that would graph a parabola given the vertex and both x intercepts. Can you please help?
Thanks.

07/21/17

#### Find an equation for the parabola

Find an equation for the parabola that satisfies the given conditions:
Focus (2,3)
Vertex (2,4)

07/18/17

#### Need help with real world math problems?

For problems 7 – 8, use the Falling Object Model (Object is dropped not thrown) h = -16t2 + s where h = height, t = time (seconds) and s = initial height. In each problem below, remember, h = 0...
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06/20/17

#### Find an equation whose graph is a parabola with directrix y= -1 and vertex (1,3)?

Find an equation whose graph is a parabola with directrix y= -1 and vertex (1,3).

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