All Questions ⁺⁰237321 Questions

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189

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Algebra

Find all values of a that satisfy the equation a/3 + 1 = a + 3.

Guest Jun 26, 2022

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242

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help counting

A committee of 4 is to be chosen from a group of students. If the number of students in the group increases by 1, the number of different committees triples. How many students are in the group?

Guest Jun 26, 2022

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278

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triangle problem

In right triangle ABC with angle B = 90 degrees, we have sin A = cos A. What is tan A?

Guest Jun 26, 2022

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242

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PLS HALPAROOOO

Find the number of ordered pairs $(a,b)$ of integers such that \[\frac{a + 2}{a + 5} = \frac{b}{3}.\]

Guest Jun 26, 2022

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268

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PLS HALP

how many ordered pair of a,b integers are there with \[\frac{a + 2}{a + 5} = \frac{b}{3}.\]

Guest Jun 26, 2022

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269

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Counting

How many distinct odd-digit numbers can be written with the digits 1,2,3, 4, 5 if no digit may be used more than once?

Guest Jun 26, 2022

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276

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Binomial

Find a so that ax^2 + 15x + 4 + 3x + 5 is the square of a binomial.

Guest Jun 26, 2022

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269

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Algebra

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

Guest Jun 26, 2022

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261

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Algebra

An aquarium tank is 1/6 full of water. When 2 gallons of water are added, the tank becomes 5/12 full. What is the total capacity of the aquarium tank, in gallons?

Guest Jun 26, 2022

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195

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Probability question

Two cards are chosen at random from a standard 52-card deck. What is the probability that they are either both hearts or both diamonds or both Aces?

Guest Jun 26, 2022

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266

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help quadratic

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. What is the maximum height of the ball? Express your read more ..

Guest Jun 26, 2022

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202

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quadratic

The difference of the roots of the quadratic equation x^2 + bx + c = 0 is |b - 2c - 2c|. If c is not equal to zero, then find c in terms of b.

Guest Jun 26, 2022

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260

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help plz

Order from least to greatest

sqrt(21) - sqrt(27), -sqrt(16) + sqrt(25), sqrt(27) + sqrt(25), sqrt(27) - sqrt(21)

Guest Jun 26, 2022

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275

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Exponents

If we know that b(b^4 * b^5)^2 = b^x for all real numbers b, what is the value of x?

Guest Jun 26, 2022

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265

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geometry

In triangle ABC, BAC = 78 degrees and ACB = 33 degrees. The incircle of triangle ABC touches sides BC, AC, and AB at D, E, and F, respectively. Find EFD in degrees.

Guest Jun 26, 2022

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285

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quadratic

In an equation of the form with k = ax^2 + bx + c, the least possible value of k occurs at x = -b/(2a). In the equation k = (6x - 12)(x - 8) , what is the least possible value for k?

Guest Jun 26, 2022

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272

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Algebra

If I give my brother 5 dollars, then we will have the same amount of money. If instead he gives me 16 dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?

read more ..

Guest Jun 26, 2022

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276

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Algebra

Pearl writes down seven consecutive integers, and adds them up. The sum of the integers is equal to 14 times the largest of the seven integers. What is the smallest integer that Pearl wrote down?

Guest Jun 26, 2022

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268

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Algebra

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?

BuilderBoi ●●

Guest Jun 26, 2022

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250

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PLS HELP THX IN ADVANCE

Fred the ant is on the real number line, and Fred is trying to get to the point 0.
If Fred is at 1, then on the next step, Fred moves to either 0 or 2 with equal probability. If Fred is at 2 then on the next step, Fred always moves to 1
Let e1 be read more ..

Guest Jun 26, 2022

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239

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Help!!

Guest Jun 26, 2022

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194

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coordinates

For what value of c will the circle with equation x^2 + 6x + y^2 - 14y + c = 0 have a radius of length 4?

Guest Jun 26, 2022

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187

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coordinates

Find the radius of the circle with equation x^2 - 4x + y^2 - 6y - 36 = 25

Guest Jun 26, 2022

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191

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help algebra

Find the total number of terms in the expansion of (x + a)^11 - (x - a)^11 after simplification.

Guest Jun 26, 2022

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240

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Algebra

Let
P = 1/7 + 1/7^2 + 1/7^3 + ...
Then P can be expressed in the form a/b, where a and b are positive integers. Find the smallest possible value of a + b?

Guest Jun 26, 2022

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