All Questions ⁺⁰237827 Questions

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+37

Vieta's

Let a, b, c be complex numbers, with a real, such that

a+b+c = ab + ac + bc = abc = 3.
read more ..

Voldemort ●●

SupersonicMan12 Jul 19, 2022

0

337

6

Fractions

Determine the number of fractions in the pattern below that are expressed in lowest terms.

1/2019, 2/2019, 3/2019, ..., 2019/2019

SupersonicMan12 ●●●●●●

Guest Jul 19, 2022

0

299

1

Parabola

A parabola ax^2+bx+c contains the points (-1,0), (0,5), and (-5,0). Find the value 100a+10b+c.

Guest Jul 19, 2022

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296

1

Function

Suppose that a and b are positive real numbers, and let
f(x) = ax if x = -4
f(x) = bx if x > -4
If f(-4)=-\frac{60}{13} and f(4)=3120, what is a+b? read more ..

Guest Jul 19, 2022

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293

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Plz Help

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 read more ..

CZ20221 Jul 19, 2022

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196

0

Domain

Find the greatest integer value of b for which the expression
(9x^3+4x^2+11x+7)/(x^2+bx+18)

Guest Jul 19, 2022

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308

2

Domain

What is the range of the function f(x) = 1/x^3?

Guest Jul 19, 2022

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213

0

Algebra

Find all values of x such that 2x/(x + 2) = -8/(x + 4).
If you find more than one value, then list your solutions, separated by commas.

Guest Jul 19, 2022

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308

1

help plz

Determine the value of ? in the figure below.

read more ..

Guest Jul 19, 2022

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275

1

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 19, 2022

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302

1

Domain

Find the domain of the function f(x) = sqrt(sqrt(x^2 - 16) + 3).

Guest Jul 19, 2022

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310

1

Domain

Find the domain of the real-valued function
f(x) = -sqrt(-10x^2 - 4x + 6)

Give the endpoints in your answer as common fractions, not mixed numbers or decimals. read more ..

Guest Jul 19, 2022

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356

4

Help please!

Let a and b be the solutions of the equation 2x^2+6x-14=0. What is the value of (2a-3)(4b-6)?

Guest Jul 19, 2022

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223

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logarithms

Guest Jul 19, 2022

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314

2

Probability

A point in space (x,y,z) is randomly selected so that -1\le x \le 1, -1\le y \le 1, -1\le z \le 1. What is the probability that x + y + z <= 0?

Guest Jul 19, 2022

Jul 18, 2022

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307

1

help algebra

Let a, b, and c be the roots of 24x^3 - 121x^2 + 87x - 8 = 0. Find log_2 (a + b + c).

Guest Jul 18, 2022

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350

4

Percent

.I'm at a bookstore with 35 dollars in my pocket and a 30%-off coupon. What is the cost of the most expensive book I can buy with my money and the coupon? (Assume that there are books of every possible price in the bookstore. It's a large bookstore!) read more ..

Guest Jul 18, 2022

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312

1

Modular inverse

Find the modular inverse of 27, modulo 29. Express your answer as an integer from 0 to 28, inclusive.

Guest Jul 18, 2022

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300

1

counting

Kurt wants to pick a bouquet containing a dozen flowers for is mother. If he more than a dozen of each of four choices of flowers (roses, lilies, orchids, violets) and the order of the flowers is irrelevant, and there must be at least eight roses, read more ..

Guest Jul 18, 2022

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320

1

Counting

If S is a finite set, the minimax of S is defined to be the product of the least and greatest elements of S. How many different subsets of {2, 3, 4, 5, ..., 19, 20} have minimax 28?

Guest Jul 18, 2022

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306

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counting points

Including the endpoints, how many points with two integer coordinates lie on the line joining (0,25) and (160,0)?

Guest Jul 18, 2022

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290

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Units digit

What's the units digit of 4^{35}?

Guest Jul 18, 2022

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284

1

Stats

Let a, b, and c e positive integers such that a < b < c. The median of these three numbers is 20 while the arithmetic mean is 28. What is the greatest possible value for c?

Guest Jul 18, 2022

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314

1

Help

https://web2.0calc.com/questions/graphing-parabolas-part-2

Guest Jul 18, 2022

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312

1

Help

https://web2.0calc.com/questions/help_432

Guest Jul 18, 2022

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