All Questions

585

+1982

Create a cladogram that depicts the relationships among species A through species G.

Create a cladogram that depicts the relationships among species A through species G.

read more ..

off-topic

macabresubwoofer May 4, 2020

607

Probability Question

The New York Yankees play the San Diego Padres in the World Series. The two teams will play each other until one team has won 4 games, at which point the 4-game winner will win the World Series. The Yankees have a 2/3 chance of winning any individual game. read more ..

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Guest May 4, 2020

545

Finding the value of cosine?

Given cos θ = 0.4, which is the value of cos (θ + π)?

The answer is -0.4, how should I get this answer? I have no idea how I should even approach it...

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Guest May 4, 2020

547

help

x is a root of x^2 - 15x + 1 = 0. Find x^4 + 1/x^4.

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Guest May 4, 2020

712

+115

Functions and Modeling

Suppose
f = f(x) satisfies f(9) = f(9.01) = 3.Estimate the value of df/dx at x = 9.

Alan ●●

Shaezy May 4, 2020

647

The angle of elevation to the top of a building is 45 degrees.

The angle of elevation to the top of a building is 45 degrees. If you move 20 feet farther away, the angle of elevation to the top of the building becomes 30 degrees. What is the height of the building (in feet)?

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Guest May 4, 2020

611

help

It takes Martha 30 minutes to walk uphill 1km from her home to school, but it takes her only 10 minutes to walk from school to home along the same route. What is her averagte speed, in km/hr, for the round trip?

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Guest May 4, 2020

522

please help

Urn A contains 5 red marbles and 3 white marbles Urn B contains 2 red marbles and 6 white marbles
a. if a marble is drawn from each urn. What is the probability that they are both of the same color?
b. if two marbles are drawn from each urn, what read more ..

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Guest May 4, 2020

664

how many solutions?

Find the number of positive integer solutions to 2x + 3y = 100.

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Guest May 4, 2020

2055

+98

Verify the identitiy: sinx/1-cosx = cscx + cotx

Verify the identitiy:
sinx/1-cosx = cscx + cotx

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ocmaz May 4, 2020

601

probability

Three fair dice are tossed at random (i.e., all faces have the same probability of coming up). What is the probability that the three numbers turned up can be arranged to form an arithmetic progression with common difference one?

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Guest May 4, 2020

981

+188

HELP ASAP URGENT!!!!!

A jar contains two red marbles, three green marbles, ten white marbles and no other marbles. Two marbles are randomly drawn from this jar without replacement. What is the probability that these two marbles drawn will both be red? Express your answer as read more ..

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SoggyPerson May 4, 2020

517

please help

If a + b = 1 and a^2 + b^2 = 2, then find a^3 + b^3.

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Guest May 4, 2020

May 3, 2020

707

+188

HELP PLZZZZZ

I was wondering how to attack this problem

LuckyDucky ●●●●●●●

SoggyPerson May 3, 2020

681

+639

What does the increase priority do?

When you ask a question on the in blue background it says:
"You need quick answers? To increase the priority of this question, share a link to this page on social media and verify that the added link works."
read more ..

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LuckyDucky May 3, 2020

595

+166

More trig

How many values of with satisfy ?

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HannibalBarca May 3, 2020

663

+166

CPhill

CPhill, I always notice that you are answer all the questions. How long do you spend everyday on web2.0calc?

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HannibalBarca May 3, 2020

551

+166

Trig

https://web2.0calc.com/questions/trignometry_7

HannibalBarca May 3, 2020

586

triangle

In the diagram, AC=1, where C is the midpoint of side AB of triangle ABJ. Square BCDE is drawn, where D lies on side AJ and E is in the interior of the triangle. Square FGIH is drawn, where G lies on side BJ, H lies on read more ..

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Guest May 3, 2020

449

squares

Each square in a 2 x 2 grid is to be colored with five colors, so that no two adjacent squares have the same color. How many different colorings are possible?

read more ..

Guest May 3, 2020

530

help

The height in feet of a projectile is given by the function h(t) = -16t^2+20t+9 where t represents the time in seconds after launch. What is the maximum height reached by the projectile?

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Guest May 3, 2020

531

help with rational function

The graph of the rational function

y = (ax - b)/(-2x + c)
read more ..

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Guest May 3, 2020

2304

+123

A number has the property that its square is equal to 84 more than five times the number. Enter all numbers that have this property.

CentsLord ●●

mathlete2008 May 3, 2020

2644

The roots of y^2 + 5y - 11 = 0 are a and b. Find (a + 3)(b + 3).

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Guest May 3, 2020

All Questions ⁺⁰237680 Questions

Create a cladogram that depicts the relationships among species A through species G.

Probability Question

Finding the value of cosine?

help

Functions and Modeling

The angle of elevation to the top of a building is 45 degrees.

help

please help

how many solutions?

Verify the identitiy: sinx/1-cosx = cscx + cotx

probability

HELP ASAP URGENT!!!!!

please help

HELP PLZZZZZ

What does the increase priority do?

More trig

CPhill

Trig

triangle

squares

help

help with rational function

A number has the property that its square is equal to 84 more than five times the number. Enter all numbers that have this property.

The roots of y^2 + 5y - 11 = 0 are a and b. Find (a + 3)(b + 3).

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