All Questions ⁺⁰238457 Questions

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269

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Counting problem

Dogs in the GoodDog Obedience School win a blue ribbon for learning how to sit, a green ribbon for learning how to roll over, and a white ribbon for learning how to stay. There are 100 dogs in the school.
* 62 have blue ribbons, 65 have read more ..

Guest Oct 29, 2022

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266

1

help counting

In a row of five squares, each square is to be colored either red, yellow, or blue, so that no two consecutive squares have the same color and there must be at least 2 red squares. How many ways are there to color the five squares?

Guest Oct 29, 2022

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297

4

+17

HELP PLZ

What is the coefficient of in this expression?

bugmenot Oct 29, 2022

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266

1

need help

Let's take a look at (x + y)^2 (x - y)^2 and (x^2 + y^2)(x^2 - y^2). While Beeker believes that these two expressions are equal for all real numbers x and y Clod believes they are not! Let's get to the bottom of this!
a) Evaluate (x + y)^2 (x - read more ..

Guest Oct 29, 2022

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261

1

help algebra

Consider the two expressions (6x^3 + 9x^2 + 4x + 7 - 17x^2 - 8x + 8)/(2x + 3 - 7x - 11) and 4x^2 - 7 + 1/(2x + 3 - 7x - 11)
a) Show that the two expressions represent equal numbers when x = 10
b) Explain why these two expressions do not represent read more ..

Guest Oct 29, 2022

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276

1

Domain

What real values of x are not in the domain of
f(x) = 1/(x^2+3x-4+x^2+9x+20+x^2-8x+7)

Guest Oct 29, 2022

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281

2

Algebra

Parker and his three friends went trick-or-treating together. If Parker got 11 pieces of candy, and each of his friends got three times as much candy as he did, how many pieces of candy did Parker and his friends get in all?

Guest Oct 29, 2022

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335

1

I really need a mod's help on this!!

Consider and read more ..

Guest Oct 29, 2022

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229

0

lgx+|lgy|+2019=0

lgx+|lgy|+2019=0
|lgx|*lgy+2020=0
log(y, x)?

Guest Oct 29, 2022

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245

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Function

Let
f(x) = -x + 3 if x <= 1
f(x) = 2 - x if x > 1
read more ..

Guest Oct 29, 2022

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248

0

Range

The range of the function g(x) = 2/(2 + 4x + 3x^2) can be written as an interval (a,b]. What is a+b?

Guest Oct 29, 2022

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232

0

need help

Let $J$ and $K$ be given points along a certain line. There are exactly two other distinct points $U$ and $V$ on this line such that $UJ/UK=7$ and $VJ/VK=2$. Let $W$ be the midpoint of $\overline{UV}$. Calculate the ratio $WJ/WK$.

Guest Oct 29, 2022

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311

1

Algebra

If I give my brother 5 dolalrs, then we will have the same amount of money. If instead he gives me 14 dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?

Guest Oct 29, 2022

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230

0

algebra

An aqarium tank is 1/6 full of water. When 2 gallons of water are added, the tank becomes full. What is the total capacity of the aquarium tank, in gallons?

Guest Oct 29, 2022

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276

1

plz help

Find the number of positive integers that satisfy the following conditions:
* Each digit is a 1 or a 2 or a 3
* The sum of the digits is 10

Guest Oct 29, 2022

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250

0

Quadratic equations

The equation y = -16t^2 - 60t + 54 describes the height (in feet) of a ball thrown downward at 60 feet per second from a height of 54 feet from the ground, where t represents time, measured in seconds. In how many seconds will the ball reach a read more ..

Guest Oct 29, 2022

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296

1

plz help

Four points W, X , Y, Z are chosen at random on the circumference of a circle. What is the probability that WX > YZ?

Guest Oct 29, 2022

Oct 28, 2022

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324

4

Will a mod please help me?

Find the value of b:

Guest Oct 28, 2022

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283

1

help algebra

Solve for x:
(3x + 12)(3x + 4) = (4x^2 + 8x + 18x^2)/(2x).

Guest Oct 28, 2022

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310

3

Help needed

The polynomial p(x) = x^2 + ax + b has positive integer coefficients a and b. If p(60) is a perfect
square and the equation p(x) = 0 has two distinct integer solutions, what is the least possible value of b?

Guest Oct 28, 2022

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283

1

counting

How many ways are there to divide 12 people into a group of 3, a group of 4, and a group of 5, if Henry has to be in the group of 4 and Jane must be in the group of 3?

Guest Oct 28, 2022

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295

1

need help

There are three consecutive positive integers. The smallest one is a multiple of 3, the middle one is a multiple of 5 and the largest one is a multiple of 4. What is the smallest possible sum of those three integers?

Guest Oct 28, 2022

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267

1

i need help can someone help me

A hockey puck is sliding from the center line toward the goal line of a 61-meter-long hockey rink at 18 meters per second. If its velocity remains constant, how far will the puck slide in 1.5seconds?

Guest Oct 28, 2022

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279

1

Decimals

There exist several positive integers x such that \frac{1}{x^2+x+1} is a terminating decimal. What is the smallest such integer?

Guest Oct 28, 2022

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278

2

need help fast

Five years from now, the sum of the ages of a woman and her daughter will be 40 years. The difference in their present age is 12 years. How old is her daughter now?

Guest Oct 28, 2022

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