All Questions ⁺⁰230833 Questions

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328

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Algebra question

If a + b = -8 , and b + c = 3, and a + c = 5. Then what is a times b times c ?

Guest Aug 10, 2020

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362

1

Help please!

A stick has a length of 5 units. The stick is then broken at two points, chosen at random.

What is the probability that all three resulting pieces are longer than 1 unit?

Guest Aug 10, 2020

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535

2

Probability Help!

Fred the ant is on the real number line, and Fred is trying to get to the point 0.
If Fred is at 1 then on the next step, Fred moves to either 0 or 2 with equal probability.
If Fred is at 2 then on the next step, Fred always moves read more ..

Guest Aug 10, 2020

+5

644

3

+566

Not able to thumbs up. :(

Here's an off topic post, but basically, here :
https://web2.0calc.com/questions/binomial-probability_9

Melody was so kind to give an extremely well explained answer. :) read more ..

off-topic

iamhappy Aug 10, 2020

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488

2

please help with this

What is the depth of the milk?

Guest Aug 10, 2020

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325

1

counting problem

How many 3 digit numbers can be made using the digits in the list (1,2,3,3,3,9)?

Guest Aug 10, 2020

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378

1

Problem

Consider the rectangular region with the following points as vertices: (5,4), (-5,4), (-5,-4), (5,-4). How many points with integer coordinates will be strictly in the interior of this rectangular region?

Guest Aug 10, 2020

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320

1

please help

If you're good at trigonometry please help meeeee

Guest Aug 10, 2020

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465

2

+30

COUNTING

How many ways are there for 20 rectangular brick with dimensions
1 X 3 to fill a grid with dimensions 3 X 20 ?

CoolMathWiz Aug 10, 2020

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455

1

+30

Clock Problem

At certain minutes past 5, ‘6’ on the clock is at the middle of the minute-hand and the hour-hand. How
many minutes later ‘6’ on the clock is at the middle of the minute-hand and the hour-hand again?c

CoolMathWiz Aug 10, 2020

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814

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+223

Geometry

The sides of triangle XYZ are XY = XZ = 25 and YZ = 40. A semicircle is inscribed in triangle XYZ so that its diameter lies on and is tangent to the other two sides. Find the area of the semicircle.
read more ..

envoy Aug 10, 2020

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893

2

+223

Geometry

Two circles with radius 1 are externally tangent at B, and have and as diameters. A tangent to the circle with diameter passes through A, and a tangent to the circle with diameter passes through C, so that the tangent lines are parallel. Find the distance read more ..

envoy Aug 10, 2020

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300

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please help with geometry

A series of circles is inscribed in an equilateral triangle as shown. Find the ratio of the total area of the circles to the area of equilateral triangle ABC.

read more ..

Guest Aug 10, 2020

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846

1

Halp

The perimeter of an equilateral triangle is 12. Find the area to the nearest tenth

Guest Aug 10, 2020

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3266

1

algebra question

Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 9 hours of burning, a candle has a height of 25.4 centimeters. After 23 hours of burning, its height is 19.8 centimeters. read more ..

Guest Aug 10, 2020

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311

0

probability

Neymar has a 1/4 chance to score on a penalty. What is the probability that Neymar will score atleast 4 penalties in a penalty round of 6 penalties?

Guest Aug 10, 2020

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506

2

+219

Help again!

Hello. Any help is greatly appreciated. Thank you!

1)Let AB and CD be chords of a circle, that meet at point Q inside the circle. If AQ = 6, BQ = 12, and CD = 38, then find the minimum length of CQ.
read more ..

Noori Aug 10, 2020

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466

1

im really confused

Gail bought 5 pounds of oranges and 2 pounds of bananas for $14. Her husband later bought 3 pounds of oranges and 6 pounds of bananas for $18. What was the cost per pound of the oranges and the bananas?

Guest Aug 10, 2020

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521

1

polynomial question

Find the quadratic f(x) = ax^2 + bx + c such that f(1) = 3, f(-1) = 7, and f(5) = 26.

Guest Aug 10, 2020

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663

1

please help

The height of a soccer ball that is kicked from the ground can be approximated by the function:y = -12x^2 + 48x where y is the height of the soccer ball in feet x seconds after it is kicked. What is the soccer ball's maximum height in feet?

Guest Aug 10, 2020

Aug 9, 2020

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1355

1

+334

Halp

The quadratic $ax^2 + bx + c$ can be expressed in the form $2(x - 4)^2 + 8$. When the quadratic $3ax^2 + 3bx + 3c$ is expressed in the form $n(x - h)^2 + k$, what is $h$?

Rayjplayz Aug 9, 2020

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412

1

please help

Compute the sum 1+4+7+10+...100+103

Guest Aug 9, 2020

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316

0

function

The function f(x) has the domain -1 < x < 1. What is the domain of the function f(2x - 7)?

Guest Aug 9, 2020

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285

0

trig question

If x is an obtuse angle such that sin(x) = 5/6, then compute cos(x) and tan(x).

Guest Aug 9, 2020

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