All Questions

269

Inequality

What is the value of b + c if x^2 + bx + c > 0 only when x is less than -4 or x is greater than 8?

Guest Feb 15, 2022

284

französischer commentaire

Ich muss in dem Fach Französisch einen commentaire über MDS (marathon des sables) schreiben, es wäre sehr nett, wenn mir jemand helfen könnte
wie man ein commentaire schreibt, weiß ich nur nicht über das Thema. read more ..

Guest Feb 15, 2022

527

+162

The teacher of a seventh-grade class flipped a coin 100 times. The students recorded the results in the table shown below:

The teacher of a seventh-grade class flipped a coin 100 times. The students recorded the results in the table shown below:

Side of Coin Landed On Heads Tails
Number of Flips read more ..

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FizzyShxwtyXXMari Feb 15, 2022

313

Domain

Find the greatest integer value of b for which the expression (9x^3 + 4x^2 + 11x + 7)/(x^2 + bx + 18) has a domain of all real numbers.

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Guest Feb 15, 2022

336

Can anyone help and explain ty!

The ratio of the number of rambutan trees to the number of mango trees
was 5:3. After 12 more rambutan trees were planted, the new ratio became 11:6
How many mango trees were there?

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Guest Feb 15, 2022

412

+289

Help!!!! Algebra!

If $h(x)$ is a function whose domain is $[-8,8]$, and $g(x)=h\left(\frac x2\right)$, then the domain of $g(x)$ is an interval of what width?

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Glowlife Feb 15, 2022

371

Please help!

Determine an equation of the function f(x) in terms of g(x) and g(x) in terms of f(x).

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Guest Feb 15, 2022

319

help probability

I choose a random integer n between 1 and 10 inclusive. What is the probability that for the I chose, there exist no real solutions to the equation x(x + 2) = -n? Express your answer as a common fraction.

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Guest Feb 15, 2022

388

Algebra

Each solution to x^2 + 5x + 18 = 0 can be written in the form a + bi where a and b are real numbers. What is a^2 + b^2?

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Guest Feb 15, 2022

394

help geometry

Let triangle ABC have side lengths AB=13, AC=14, and BC=16. There are two circles located inside angle BAC which are tangent to rays AB, AC, and segment BC. Compute the distance between the centers of these two circles.

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Guest Feb 15, 2022

400

sorta stuck...

Find a fraction equal to value of the decimal . Give your answer in simplest terms.

im pretty sure i have to convert this to some sort of geometric sequence but im not sure how... plz help
read more ..

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Guest Feb 15, 2022

394

trig question

AB = 20 cm, m angle A = 30 degrees, and m angle C = 40 degrees. Express the number of centimeters in the length of line BC.

read more ..

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Guest Feb 15, 2022

387

geometry

Two right triangles share a side as follows. What is the distance from C to line AD?

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Guest Feb 15, 2022

389

help plz

Given positive integers x and $y$ such that $x\neq y$ and 1/x + 1/y = 1/8, what is the smallest possible value for x + y?

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Guest Feb 15, 2022

354

HELP NOW ASAP PLZ AHHHHH

As shown in the diagram, one end of a 11-foot-long electric cable is fixed at point A on the wall, and the other end of the cable (denoted by C) is a sensor. There is a pin attached to the cable at a point B that is 4 units away from C, and read more ..

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Guest Feb 15, 2022

421

Writing an equation in slope intercept form

A line passes through (4,1) the point and has a slope of 5/4. Write equation in slope intercept form

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SavageRave21 Feb 15, 2022

336

Domain

What is the smallest integer value of c such that the function f(x) = (x^2 + 1)/(x^2 - 4x + c) has a domain of all real numbers?

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Guest Feb 15, 2022

405

+99

Math help please

Can someone please help me with this problem?

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Jxalskdfjarkfhqwio3r Feb 15, 2022

+11

472

+289

trigonometry!!!

The area of right triangle ABC is 4, and the hypotenuse of AB is 12. Compute sin 2A

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Glowlife Feb 15, 2022

315

trig equation

In right triangle ABC with B = 90 degrees, we have sin A = cos A. What is cos A?

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Guest Feb 15, 2022

401

Clock problem

Find all integers n such that when the clock strikes n o'clock, the acute angle between the hour and minute hands is degrees. Enter your answer as a comma-separated list.

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Guest Feb 15, 2022

408

+364

old questions stuff

https://web2.0calc.com/questions/geometry-problem_14 ok so i found this thing(and cphill is back on the top users!) and i wanted to provide my solution, solution below. Also cphill if you see this i got a different answer from you idk why. read more ..

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XxmathguyxX Feb 15, 2022

Feb 14, 2022

393

Domain

There are three real numbers x that are not in the domain of
\[f(x) = \cfrac{1}{1+\cfrac{2}{1+\cfrac 3x}}.\]
What is the sum of those three numbers?

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Guest Feb 14, 2022

416

Algebra

When going to the beach, Guilherme takes 2 hours on the road to go from his city to the beach and 3 hours to get back to his city. Knowing that Guilherme's car goes at 100 km/h when downhill, 80 km/h on plane surfaces and 50 km/h uphill, and that read more ..

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Guest Feb 14, 2022

381

Algebra

A right triangle has both a perimeter and an area of 30. Find the side lengths of the triangle.

So far, I drew a right triangle with legs x and y, and hypotenuse √(x^2+y^2).
The 2 equations I have are : xy = 60 and x+y+√(x^2+y^2) read more ..

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Guest Feb 14, 2022

All Questions ⁺⁰238158 Questions

Inequality

französischer commentaire

The teacher of a seventh-grade class flipped a coin 100 times. The students recorded the results in the table shown below:

Domain

Can anyone help and explain ty!

Help!!!! Algebra!

Please help!

help probability

Algebra

help geometry

sorta stuck...

trig question

geometry

help plz

HELP NOW ASAP PLZ AHHHHH

Writing an equation in slope intercept form

Domain

Math help please

trigonometry!!!

trig equation

Clock problem

old questions stuff

Domain

Algebra

Algebra

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