All Questions ⁺⁰237784 Questions

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193

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linear equations

If 4u-5v=23 and 2u+4v=-8+4u, find the value of u+v.

Guest Jul 16, 2022

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202

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linear equations

For what ordered pair (a,b) are there infinite solutions (x,y) to the system
2ax + 2y = b
5x + y = -3 - x + 4y

Guest Jul 16, 2022

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297

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Probability

An urn contains 6 red, 5 blue and 3 green marbles. If 2 marbles are picked at random,what is the probability that both are red?

Guest Jul 16, 2022

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314

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Right triangles

Find all values of t such that t - 1, t + 1, and 8 + t could be the lengths of the sides of a right triangle.

Guest Jul 16, 2022

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208

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-7=8-3^5 to the square root of x^3

-7=8-3^5 to the square root of x^3

Guest Jul 16, 2022

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208

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Domain

What is the domain of the real-valued function
q(x) = sqrt(x)*(1 - x^2)^(1/3)?
Express your answer as an interval or as a union of intervals.

Guest Jul 16, 2022

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299

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counting

In how many ways can we seat 6 people around a round table if Fred and Gwen and Scott insist on sitting next to each other? (Two seatings are considered equivalent if one is a rotation of the other.)

Guest Jul 16, 2022

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273

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Exponents

What is the value of n such that 10^n = 10^{-8}\times \sqrt{\frac{10^{37}}{0.1}}?

Guest Jul 16, 2022

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206

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graphing

Suppose the graph of y=f(x) includes the points (1,5) (5,3) and (3,2) .
Based only on this information, there are two points that must be on the graph of y= f(f(x)). If we call those points (a,b) and (c,d), what is ab+cd? read more ..

Guest Jul 16, 2022

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1

213

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Algebra

What non-zero integer must be placed in the square so that the simplified product of these two binomials is a binomial?

(3x+2)(15x-n)

Guest Jul 16, 2022

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321

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cylinder

What is the radius, in inches, of a right circular cylinder if its lateral surface area is 3.5 square inches and its volume is 10.5 cubic inches?

Guest Jul 16, 2022

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325

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Algebra

The expression x^2 + 15x + 54 can be written as (x + a)(x + b), and the expression x^2 - 17x + 72 written as (x - b)(x - c), where a, b, and c are integers. What is the value of a+b+c?

Guest Jul 16, 2022

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292

1

Please help with this

https://web2.0calc.com/questions/pls-help_10755

Guest Jul 16, 2022

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309

1

Help

https://web2.0calc.com/questions/math_74513

Guest Jul 16, 2022

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305

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linear inequalities

Find a linear inequality with the following solution set. Each grid line represents one unit.
(Give your answer in the form ax + by + c > 0 or ax + by + c >= 0 where a, b and c are integers with no common factor other than 1.)
read more ..

Guest Jul 16, 2022

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267

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math problem

Eli started saving money in his empty piggy bank. He inserted $1 on every Monday, $2 on every Tuesday, $3 on every Wednesday, $4 on every Thursday, $5 on every Friday, $6 on every Saturday, and $7 on every Sunday. At the end of 13 days, he opened his bank read more ..

Guest Jul 16, 2022

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226

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help plz

In the figure, a terrenella bee moth (Aphomia terrenella) is pictured next to part of a ruler marked in centimeters. How many terrenella bee moths of equal length, placed end to end, have a combined length of 2 meters?

Guest Jul 16, 2022

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289

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help math problem

Quinn is hanging a framed picture that is 10 inches wide and 6 inches tall on a wall that is 8 feet 3 inches wide and 7 feet 6 inches tall. When the picture is exactly centered on the wall, the left edge of the picture frame is x feet y inches read more ..

Guest Jul 16, 2022

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304

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quadratic

Let a and b be the solutions of the equation 2x^2 + 6x - 14 = x^2 - 4x + 5. What is the value of (2a - 3)(4b - 6)?

Guest Jul 16, 2022

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291

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Percent

The side length of a square is increased by 60%. By what percent is the area increased?

Guest Jul 16, 2022

Jul 15, 2022

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218

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quadratics

Let p, q, and r be constants. One solution to the equation (x-p)(x-q) = (r-p)(r-q) is x=r. If p = 0 and q = 0, then what is the other solution?

Guest Jul 15, 2022

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201

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inequality

Select all the points that satisfy y < 2x + 3.

Guest Jul 15, 2022

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219

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help inequality

Jeri finds a pile of money with at least 200. If she puts 50 of the pile in her left pocket, gives away 1/3 of the rest of the pile, and then puts the rest in her right pocket, she'll have more money than if she instead gave away 200 of the original pile read more ..

Guest Jul 15, 2022

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220

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Percent

My street hockey team plays three games each week. My team lost all 12 games in the first four weeks. Then, my team won two games and lost one game in the fifth week, bringing our record to 2 wins and 13 losses. Each week after that, my team won two games read more ..

Guest Jul 15, 2022

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203

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quadratic

What is the minimum value of z if z=x^2+2y^2+16x-4y+22+3xy?

Guest Jul 15, 2022

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