All Questions

280

help

In the diagram, the three concentric circles have radii of 4, 6, and 7. Three regions are labeled X, Y, or Z below. Of these three regions, what is the difference between the area of the region with the greatest area and the area of the region with read more ..

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Guest Apr 6, 2022

232

Please help I am struggling

https://web2.0calc.com/questions/help_32420#r2

Guest Apr 6, 2022

241

quadratics

Babette is thinking of a monic quadratic polynomial with real coefficients. She tells you that when she squares the roots of her quadratic, to form another monic quadratic, surprisingly, it is the same as the original. How many different quadratic polynomials read more ..

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Guest Apr 6, 2022

253

Lengths in circles

Circle $\omega$ has radius 5 and is centered at $O$. Point $A$ lies outside $\omega$ such that $OA=13$. The two tangents to $\omega$ passing through $A$ are drawn, and points $B$ and $C$ are chosen on them (one on each tangent), such that line read more ..

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Guest Apr 6, 2022

330

+46

What interval consists of all w which satisfy neither nor ?

What interval consists of all w which satisfy neither nor ?

I have been trying this for days but I can't figure it out.

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SpaceXGeek Apr 6, 2022

246

help geometry

In triangle ABC, M is the midpoint of AB. Let D be the point on BC such that AD bisects BAC, and let the perpendicular bisector of AB intersect AD at E. If AB=44, AC=30, and ME=, then find the area of triangle ACE

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Guest Apr 6, 2022

211

Which of these can factor using difference of two squares ?

1. x^2 + 4x - 12

2. 14x - 16
read more ..

Guest Apr 6, 2022

254

counting

How many integers between 500 and 1000 contain both the digits 3 and 4?

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Guest Apr 6, 2022

182

In (x^4 - 100) is equal to (x + 10) and

In (x^4 - 100) is equal to (x + 10) and

A. (x - 10)
read more ..

Guest Apr 6, 2022

179

Algebra

Let
f(x) = 2x + 5
g(x) = sqrt(f(x)) - 3
h(x) = f(g(x)) read more ..

Guest Apr 6, 2022

285

System question

For a certain value of k, the system

3a + 4b = 7,
6a + 4b = k - 3a - 8b read more ..

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Guest Apr 6, 2022

250

PLEASE HELP ASAP NO ROCKY

The sum of two numbers is 39. The second number is 3 more than three times the first number. Let x represent the first number and let y represent the second number. What is the value of the first number?

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Guest Apr 6, 2022

290

Quadratic equations

Form a quadratic polynomial whose zeroes are 3 - sqrt(3)/5 and 3 + sqrt(3)/5.

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Guest Apr 6, 2022

296

Function

Let
f(x) = x^2 - 4 if x < 7
f(x) = x + 13 if x >= 7
What is f(f(f(17)))? read more ..

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Guest Apr 6, 2022

299

geometric series

The sum of the first terms n in the infinite geometric sequence {1/4, 1/8, 1/16, ..} is . Find n.

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Guest Apr 6, 2022

275

Domain question

What real values of x are not in the domain of $f(x) = \frac{1}{|x^2 + 3x - 4| + |x^2 + 9x - 10|}$?

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Guest Apr 6, 2022

292

Please help Geometry

Find $XY$ in the triangle below.

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Guest Apr 6, 2022

314

Analytic geo

If the graph of the line y = ax + b passes through the points (4,5) and (8,-17), what is a - b?

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Guest Apr 6, 2022

320

help help

Expand -(3 - c)(c + 2(3 - c) + 5c - 7).What is the sum of the coefficients of the expanded form?

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Guest Apr 6, 2022

307

Quadratic

What value of x will give the minimum value for x^2 + 11x - 5 + 5x

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Guest Apr 6, 2022

287

Hard math

How many pairs of positive integers (a,b) satisfy 1/a + 1/b = 1/(2*17)?

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Guest Apr 6, 2022

237

very confused, sorry

(a) Determine a cubic polynomial with integer coefficients which has $\sqrt[3]{2} + \sqrt[3]{4}$ as a root.
(b) Prove that $\sqrt[3]{2} + \sqrt[3]{4}$ is irrational.

tysm in advance!! ive been having a really hard time with read more ..

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Guest Apr 6, 2022

240

Number Theory

As n ranges over the positive integers, what is the maximum possible value that the greatest common divisor of 13n + 8 and 5n + 7 can take?

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Guest Apr 6, 2022

298

help geometry

In the diagram, O is the center of a circle with radii OP=OQ=. What is the perimeter of the shaded region?

geno3141 ●

Guest Apr 6, 2022

284

Help Please

If f(x)=2/(x+1), then what is the value of f^-1(1/5)?

CPhill ●●

Guest Apr 6, 2022

All Questions ⁺⁰236320 Questions

help

Please help I am struggling

quadratics

Lengths in circles

What interval consists of all w which satisfy neither nor ?

help geometry

Which of these can factor using difference of two squares ?

counting

In (x^4 - 100) is equal to (x + 10) and

Algebra

System question

PLEASE HELP ASAP NO ROCKY

Quadratic equations

Function

geometric series

Domain question

Please help Geometry

Analytic geo

help help

Quadratic

Hard math

very confused, sorry

Number Theory

help geometry

Help Please

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