All Questions

278

Algebra

Given that the polynomial x^2 - 15x + t = 0 has only positive integer roots, find the average of all distinct possible values of t.

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Guest Feb 21, 2022

312

maths

what is half o 75 in fractions

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Guest Feb 21, 2022

291

Domain

Suppose the domain of f is (-1,1). Define the function j by j(x) = f(1/sqrt(x)). What is the domain of j?

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Guest Feb 21, 2022

321

Ratio

What is the ratio of a:b, knowing that (a-b)/(a+b)=3/5

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Guest Feb 21, 2022

281

Number Theory

What is the largest number, all of whose digits are 3 or 2 or 1, and whose digits add up to 11?

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Guest Feb 21, 2022

317

Absolute value

Find all x such that 5 = |x - 2| + |x - 7| - |x - 8|.

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Guest Feb 21, 2022

308

Please help (algebra)

Let x be the positive number such that 2x^2=4x+9
If x can be written in simplified form as such that a, b, and c are positive integers, what is a+b+c?

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Guest Feb 21, 2022

308

Domain

The domain of the equation y = 3x/(x^2 - 5x - 4) is the set of all real numbers with the exception of the values x = A and x = B. What is A + B?

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Guest Feb 21, 2022

Feb 20, 2022

185

Ordered pairs and triplets

If LCM of [a, b] is 24 and the LCM of [a, b, c] is also 24, then what are the number of ordered pairs of [a, b] and the number of ordered triplets of [a, b, c]? Thank you for help.

Guest Feb 20, 2022

293

Digits

The five-digit number $\overline{a679b}$ is divisible by 72. Find the digits a and b.

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Guest Feb 20, 2022

309

Domain

If h(x) is a function whose domain is [-8,8], and g(x)=h(2x^2), then the domain of g(x) is an interval of what width?

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Guest Feb 20, 2022

229

Functions

Suppose f(9) = 2. For each of the parts below, find a point that must be on the graph of the given equations

y = f(x-3) + 5
y = 2f(x/4) read more ..

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Guest Feb 20, 2022

312

I need help.

Ken's savings was 2/5 of Edwin's savings. After Ken increased his savings by 20% and Edwin's savings decreased by 55%, Ken's savings was $600 more than Edwin's. What was Ken's savings in the end?

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Guest Feb 20, 2022

294

Need help with this question

Laura, Tim and Ken had $360 altogether. Laura gave half of her money to Tim. Tim then gave 3/7 of his money to Ken. Ken then gave 2/5 of his money to Laura. The three of them had the same amount of money in the end. How much money did each of them have read more ..

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Guest Feb 20, 2022

779

Geometry

A circle centered at P with radius 10 and a circle centered at Q with radius 8 are externally tangent. A common external tangent intersects line PQ at R. Find QR.

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Guest Feb 20, 2022

344

+15

The set of points in the plane that satisfy all four of the inequalities is a polygon. What is its area?

The set of points in the plane that satisfy all four of the inequalities

is a polygon. What is its area?

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fuvtest1 Feb 20, 2022

268

Doughnuts

Erin bought a box of stickers that looked like little white doughnuts to reinforce the pages in her notebook. There were two thousand, nine hundred fifty stickers in the box, but she could not use some of them. One-fifth of read more ..

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Guest Feb 20, 2022

182

Quadratic

x^2 + bx + b + 3 = 0 has roots of the form x = (-b +/- sqrt(7))/2, where b > 0. Find b.

Guest Feb 20, 2022

297

Help me....

Paul had 2/5 as many VCDs as Peter.
When Peter threw away 210 VCDs that are not working,
the ratio of Peter's VCDs to Paul's VCDs became 10:11.
(a) How many VCDs has Peter at first ?
(b) What fraction of Peter's VCDs read more ..

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Guest Feb 20, 2022

277

Function graphs

While I was doing my algebra book, one of the questons was: Determine if each of the following graphs represents a function. (sorry I don't know how to post a picture so I'll try my best to describe) The first one is a squiggly line, the second is two segments, read more ..

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Guest Feb 20, 2022

345

+289

c&p halp polz

A fair 6-sided die is rolled once. If I roll $n$, then I win $6-n$ dollars. What is the expected value of my win, in dollars?

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Glowlife Feb 20, 2022

317

Rhombus

ABCD is a rhombus. If angle A is 129 degrees and the perimeter of ABCD is 60, then find the length of each diagonal.

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Guest Feb 20, 2022

168

Geometry

D is on side AC of Triangle ABC. We know [ABC] = 120, AD = 8, DC = 3. What is [ABD]?

Guest Feb 20, 2022

342

+237

interesting question

If , , , and are all integers, and and are both real numbers, do and have to be integers as well?

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AvenJohn Feb 20, 2022

All Questions ⁺⁰235557 Questions

Algebra

maths

Domain

Ratio

Number Theory

Absolute value

Please help (algebra)

Domain

Ordered pairs and triplets

Digits

Domain

Functions

I need help.

Need help with this question

Geometry

The set of points in the plane that satisfy all four of the inequalities is a polygon. What is its area?

Doughnuts

Quadratic

Help me....

Function graphs

c&p halp polz

Rhombus

Geometry

interesting question

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