All Questions ⁺⁰237827 Questions

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251

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triangle

In triangle ABC, M is the midpoint of AB. Let D be the point on BC such that AD bisects BAC and let the perpendicular bisector of AB intersect AD at E If AB=44, AC=30 and ME=10 then find the area of triangle BMD.

Guest Oct 30, 2022

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273

3

plz help

If f is a polynomial of degree 3, such that f(0) = f(2) = f(3) = 1 and f(1) = 0, find f(4).

Guest Oct 30, 2022

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236

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Parabola

How many y-intercepts does the graph of the parabola x = -y^2 + 4y - 4 - 2y + 7 have?

Guest Oct 30, 2022

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292

2

+96

How do I find a equation in a graph? Could anyone explain?

Write an equation for the graph shown in the form y=ax+b.
I know I have to use the y=mx+b equation but I don't know how

read more ..

coolkidslovemath1982 Oct 30, 2022

-1

259

1

ppppp

vérifier que b = ( 3n+4)(3n+5)

Guest Oct 30, 2022

0

279

2

+275

Expected Value

Three standard fair -sided dice are rolled. What is the expected number of different numbers rolled? (For example, if two 6's and a 5 are rolled, then two different numbers are rolled.)

Jasonkiln Oct 30, 2022

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227

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Algebra

What is the smallest integer value of c such that the function f(x) = (2x^2 + x + 5)/(x^2 + 14x + c) has a domain of all real numbers?

Guest Oct 30, 2022

0

235

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Number Theory

How many integers n can be used such that the quantity |2n^2 + 3n + 11 - n^2 + 9n| results in a prime number?

Guest Oct 30, 2022

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247

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equation

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

Guest Oct 30, 2022

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228

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Algebra

An aquarium tank is 1/6 full of water. When 2 gallons of water are added, the tank becomes 1/3 full. What is the total capacity of the aquarium tank, in gallons?

Guest Oct 30, 2022

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193

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counting

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 30, 2022

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186

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Counting problem

What is the coefficient of x^3 in this expression?

(x^4 + x^3 + x^2 + x + 1)^5

Guest Oct 30, 2022

0

263

1

Numbers

There are two number A and B. A is a 2-digit number which is a multiple of 8. B is a 2-digit number which is a multiple of 24. What is the largest possible difference between the two numbers A and B?

Guest Oct 30, 2022

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242

1

Coefficient

Find the constant term in the expansion of ( x^2 + 7/x + 1)^4.

Guest Oct 30, 2022

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250

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Exponents

What is the value of b if 5^b + 5^b + 5^b + 5^b + 5^b = 25^(b - 1).

Guest Oct 30, 2022

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225

1

i need help

Five times a number is divided by 7 more than that number. If the result is -8, then what was the original number?

Guest Oct 30, 2022

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250

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Algebra problem

Find all real numbers a that satisfy
1/(a^3 + 7) = -a^3/(a^3 + 7)

Guest Oct 30, 2022

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218

1

Algebra

If the two roots of the quadratic 4x^2 + 7x + k are (-7 +/- i*sqrt(79))/8, what is k?

Guest Oct 30, 2022

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223

1

Coordinates

The square with vertices (-a, -a), (a, -a), (-a, a), (a, a) is cut by the line y = x/3 into congruent quadrilaterals. The perimeter of one of these congruent quadrilaterals divided by a equals what? Express your answer in simplified radical form. read more ..

Guest Oct 30, 2022

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237

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Pls help ASAP. I don't know where to start!

1.Let f(x) = 12x^9 + x. Find f(3) + f(-3).
2.Which of these rules are functions? Select all that apply.
A inputs a real number, subtracts 100, then outputs the square root of the result if it is real.
B inputs a date, read more ..

Guest Oct 30, 2022

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232

1

plz help

A committee is to be made up from a group of candidates. The committee must consist of a chairman and some (not necessarily nonzero) number of members-at-large. How many ways can the committee be chosen? (For example, suppose that Alex is chair read more ..

Guest Oct 30, 2022

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222

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Counting problem

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 at lest three of the squares are red. How many ways are there to color the five squares?

Guest Oct 30, 2022

+2

269

3

+187

difficult quadratics

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

Can you just use the quadratic formula here or am I missing something read more ..

idontknowhowtodivide Oct 30, 2022

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199

0

Coordinates

Find the value of B-A if the graph of Ax + By = 3 passes through the point (-7,2) and is parallel to the graph of x + 3y = -5 - x + 7y.

Guest Oct 30, 2022

0

1

191

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Algebra

Pearl writes down seven consecutive integers and adds them up. The sum of the integers is equal to 8 times the largest of the seven integers. What is the smallest integer that Pearl wrote down?

Guest Oct 30, 2022

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