All Questions

253

Help algebra

What is the smallest integer value of c such that the function f(x) = (2x^2 + x + 5)/(x^2 + 14x + c) has a domain of all real numbers?

Guest Aug 22, 2021

481

I don't know what to do :((

Find all positive differentiable functions that satisfyfor all real numbers .

I am very new to integration and I have no idea how to approach this problem. Help will be greatly apreciated!!!

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Guest Aug 22, 2021

330

HALP

Find the constant term in the expansion of $\Big(x^2+\frac{1}{x}\Big)^4$.

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Guest Aug 22, 2021

422

PLZ HELP

Find the constant term in the expansion of \[\Big(2z - \frac{1}{\sqrt{z}}\Big)^9.\]

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Guest Aug 22, 2021

443

You forgot to answer (you guys ignored)

Answer this question! https://web2.0calc.com/questions/please-help-thank-you_61

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Guest Aug 22, 2021

348

Geometry Help!!

A rectangular fence is to be built with a division cutting it in half. If 300 total feet of fencing is available to make the perimeter and the inner division, what is the maximum total area, in square feet, that can be enclosed?

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Guest Aug 22, 2021

328

Help needed!!

A rectangle is placed in the first quadrant so that two of its sides align with the x- and y-axes, and its upper-right vertex lies on the graph of y = e^{-(x^2)/2}. Find the maximum area of the rectangle.

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Guest Aug 22, 2021

269

Math help!!

Find the maximum volume of a cone that can be inscribed in a sphere with radius 18.

Guest Aug 22, 2021

244

Help variables

If 1/x + 1/y = 3 and 1/x - 1/y = 7, what is the value of x + y? Express your answer as a common fraction.

Guest Aug 22, 2021

Aug 21, 2021

278

Floor Function

If y >0 , find the range of all possible values of y such that $\lfloor y \rfloor = 42$. Express your answer using interval notation.

Guest Aug 21, 2021

265

Algebra

Let a and b be real numbers such that a + b = -1. Compute -a^2 - 2a + b^2.

Guest Aug 21, 2021

431

Parabola

The graph of y=ax^2+bx+c is given below, where a, b, and c are integers. Find a-b+c.

read more ..

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Guest Aug 21, 2021

327

help with circles

Points T and U are on circle K such that K is 2 units from TU. If TU = 17, what is the radius of the circle?

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Guest Aug 21, 2021

338

Coordinates

Suppose P is the point (5,3) and Q is the point (8,6) . Find point T such that Q is the midpoint of segment PT.

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Guest Aug 21, 2021

485

Answer this

https://web2.0calc.com/questions/help_74185
Funny thing, this has been here since 2020 and has been seen by over 300 people but no one has solved it so someone please do that.

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Guest Aug 21, 2021

313

help algebra

Find three consecutive odd integers such that the sum of the first, two times the second and three times the third is 34.

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Guest Aug 21, 2021

245

help with sum

Find the value of the sum $\binom{99}{0} + \binom{99}{2} + \binom{99}{4} + \dots + \binom{99}{98}.$

Guest Aug 21, 2021

246

Counting question

How many positive integers, not exceeding 100, are multiples of 2 or 3 but not 4 or 5?

Guest Aug 21, 2021

323

help with geometry

In triangle ABC, through the midpoint of AC isdrawn PQ I| AB. The altitude CD = 6 cm. If PQ is 8 less than AB, find PQ and the area of PCQ.

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Guest Aug 21, 2021

486

+197

Help please!

If for all , then what line is necessarily an axis of symmetry of the graph of ? (Give the simplest equation of this line.)

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icecreamlover Aug 21, 2021

319

a fifth of the sum of number a and 34. Write as an algebraic expression

a fifth of the sum of number a and 34.
Write as an algebraic expression

Guest Aug 21, 2021

256

You forgot to answer this question

https://web2.0calc.com/questions/please-help-thank-you_61

Guest Aug 21, 2021

427

Rate problem

Elaine drives her car 180 miles and has an average of a certain speed. If the average speed had been 5mph more, she could have traveled 200 miles in the same length of time. What was her average speed?

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Guest Aug 21, 2021

343

Help needed ASAP

The graph of y=f(x) is shown below:

For each point (a,b) that is on the graph of y=f(x), the point (3a-1,b/2) read more ..

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Guest Aug 21, 2021

276

Algebra

at the snack shack, students attending the football game can buy sodas for 1 dollar and slices of pizza for 3 dollars. At fridays game, the snack shack made 250 dollars by selling a total of 180 items. How many sodas were sold? How many pizzas were sold? read more ..

Guest Aug 21, 2021

All Questions ⁺⁰237720 Questions

Help algebra

I don't know what to do :((

HALP

PLZ HELP

You forgot to answer (you guys ignored)

Geometry Help!!

Help needed!!

Math help!!

Help variables

Floor Function

Algebra

Parabola

help with circles

Coordinates

Answer this

help algebra

help with sum

Counting question

help with geometry

Help please!

a fifth of the sum of number a and 34. Write as an algebraic expression

You forgot to answer this question

Rate problem

Help needed ASAP

Algebra

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