All Questions ⁺⁰237234 Questions

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280

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complex number arithmetic

Karl was attempting to calculate economic figures. He found the following equation to be true:

If and , what is ? read more ..

CPhill ●●●

Guest Jun 30, 2022

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280

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quadratic

Find the maximum value of 8x - x^2 + 7x - 2x^2, for real numbers x.

Guest Jun 30, 2022

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294

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algebra

Brandon typically takes 2 less hours than Maria to assemble a bicycle if each works alone. Brandon and Maria worked together to assemble a bicycle for 3 hours, and then Maria finished the job without Brandon after an additional 1 hour. read more ..

Guest Jun 30, 2022

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256

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Help

Uncle Joe made chocolate chip cookies. Peter ate fifty percent of them right away. Jack ate fifty percent of what was left. Fourteen cookies remain. How many cookies did Uncle Joe make?

Guest Jun 30, 2022

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286

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Interests

Steven made two investments for a total amount of $1,680. One investment is at 7% and the other at 4%. The annual simple interest from the 4% investment is $20.80 less than the interest from the 7% investment, How much money read more ..

Guest Jun 30, 2022

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261

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polynomial

The polynomial f(x) has degree 3. If f(-1) = 15, f(0) = 0, f(1) = 0, and f(2) = 12, then what are the x-intercepts of the graph of f?

Guest Jun 30, 2022

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278

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sequences

When the same constant is added to the numbers 60, 100, and 180, a three-term geometric sequence arises. What is the common ratio of the resulting sequence?

Guest Jun 30, 2022

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258

1

Function

Let
p(x) = x - 2y
What is p(p(1,-1),p(-5,-2))?

Guest Jun 30, 2022

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268

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Sequence

Find the 7th term of sqrt(2), sqrt(10), 5*sqrt(2), ...

Guest Jun 30, 2022

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260

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Algebra

When (x + 2y - z)^8 is expanded, and the like terms are combined, what is the coefficient of the term x^3*y^3*z^2?

Guest Jun 30, 2022

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263

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Algebra question

If (ax + b)(bx + a) = 6x^2 + __ x + 6, where a, b and __ are distinct integers, what is the minumum possible value of __ , the coefficient of x?

Guest Jun 30, 2022

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231

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Probability question

What is the probability that a list of five different, single-digit numbers, whose sum is 31, will contain exactly one prime number? Express your answer as a common fraction.

Guest Jun 30, 2022

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269

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Counting problem

How many subsets of {0, 1, ..., 9} have the property that there are at least two elements and the sum of the two largest elements is 10?

Guest Jun 30, 2022

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274

2

Algebra help quick!

The smallest distance between the origin and a point on the graph of y = $\frac{1}{2}x^2$ - 9 can be expressed as a. Find a^2.

Guest Jun 30, 2022

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275

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Counting

A debate team consists of five girls and four boys. (Everyone is distinguishable.) How many ways can they stand in line, so that at least two of the boys are standing next to each other?

Guest Jun 30, 2022

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338

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help geometry

Triangle ABC has its vertices A, B, and C on the sides of a rectangle 4 units by 5 units as shown. What is the area of the triangle in square units?

read more ..

OrangeJuicy ●

Guest Jun 30, 2022

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297

2

Number Theory

Find the smallest number such that
(i) it leaves a remainder 2 when divided by 3 ;
(ii) it leaves a remainder 3 when divided by 5 ;
(iii) it leaves a remainder 5 when divided by 7 .

Guest Jun 30, 2022

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259

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Probability

If a 6, 7, or 8 shows up on a roll of a pair of dice, you win two dollars. If anything else shows up, you lose one dollar. If you roll the dice 300 times, what is your expected amount of winnings?

Guest Jun 30, 2022

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260

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Equation

Solve the equation x + sqrt(x - 2) = 4.

Guest Jun 30, 2022

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291

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Inequality

Solve the inequality 8 + x < 4 - 3x - 7 < 5x - 4+ 11.

Guest Jun 30, 2022

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190

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Proportion

y is proportional to x^2, and y = 8 when x = 8. What is y equal to when x = 6?

Guest Jun 30, 2022

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264

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math problem

You start driving north for 15 miles, turn right, and drive east for another 8 miles, then drive south for another 2 miles. At the end of driving, what is your straight line distance from your starting point?

Guest Jun 30, 2022

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182

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help coordinates

The length of the segment between the points (2a,a - 4) and (4,1) is 2*sqrt(13) units. What is the product of all possible values for a?

Guest Jun 30, 2022

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286

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+491

Help With a First Grade Problem

My brother is in first grade and was given this problem The instructions are to fill in the spaces with numbers that are 1,10, or 100 diffrenced from the read more ..

Elijah Jun 30, 2022

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227

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Math

Hunter has an equal number of quarters and dimes in his coin collection. They total $8.05. How many dimes does he have?

Guest Jun 30, 2022

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