All Questions

335

help quick pls

In triangle $PQR$, $PQ = 13$, $QR = 14$, and $PR = 15$. Let $M$ be the midpoint of $\overline{QR}$. Find $PM$.

Vinculum ●●

Guest Apr 14, 2022

298

Probability

In a video game, each rocket has an chance of hitting a target. Three rockets are now fired at a target. What is the probability that exactly two of the rockets will hit the target? Express your answer as a decimal to the nearest thousandth. read more ..

●●

Guest Apr 14, 2022

330

Probability question

Two different positive integers less than 100 are randomly chosen and multiplied together. What is the probability that the resulting product is a multiple of 3?

●●

Guest Apr 14, 2022

Apr 13, 2022

325

How to calcuate numbers factored 3 or 4 prime factors?

Someone did that on February 28, 2019, Is there a way to do this?

●●●●●

Guest Apr 13, 2022

306

In the diagram, is a line segment. What is the value of ?

In the diagram, is a line segment. What is the value of ? read more ..

BuilderBoi ●●●

Guest Apr 13, 2022

319

Please help if you can :)

Eleven rectangular 9-inch by 12-inch pictures hang on a wall. How many square inches of the wall's surface area are covered by the pictures?

BuilderBoi ●●●●●

Guest Apr 13, 2022

319

Please help! Geometry

What is the area of the trapezoid shown? Express your answer in simplest exact form.
read more ..

●●●●●●

Guest Apr 13, 2022

293

help counting

4 girls and 8 boys are standing together. In how many ways can a 7- person committee be selected from the group if at least 2 boys must be included?

BuilderBoi ●●

Guest Apr 13, 2022

284

Polygons

The number of diagonals in a certain regular polygon is equal to times the number of sides. How many sides does this polygon have?

BuilderBoi ●●●●

Guest Apr 13, 2022

271

Rate problem

One month, Ruby worked 8 hours more than Isaac, and Svetlana worked 4 times as many hours as Ruby. Together they worked hours. Find the number of hours each person worked.

●●●●

Guest Apr 13, 2022

307

tricky 3d-geometry prob!

Let ABCDEFGH be a rectangular prism, where EF = 4, EH = 5, and EA = 5. Find the volume of pyramid CFAH.

●●●

Guest Apr 13, 2022

286

Pentagon

What is the area in square inches of the pentagon shown?

BuilderBoi ●●●●

Guest Apr 13, 2022

275

trig question

If sec 4x = csc (x - 60), where 4x is an acute angle, then find the value of x. (All angles are in degrees.)

●●●●●●

Guest Apr 13, 2022

356

Algebra

If x^2 + 1/x^2 = 171, what is the positive value of x - 1/x?

catmg ●●●●●●●●●●

Guest Apr 13, 2022

299

System

For what negative value of k is there exactly one solution to the system of equations y = 2x^2 + kx + 6, y = -x - 8?

●●●●●●

Guest Apr 13, 2022

307

Number Theory

Given that m - 2 is a positive integer that divides 3m^2 - 2m + 11, find the sum of all such values of m.

●●

Guest Apr 13, 2022

377

help trig

If sin(2x) = 2/3, then find sin(x)^6 + cos(x)^6.

catmg ●●●●●

Guest Apr 13, 2022

340

COUNTINGHELP

A bag contains 21 marbles; there are only red marbles and blue marbles in the bag. There are twice as many red marbles as there are blue marbles. If exactly two marbles were to be selected at random, without replacement, what is the probability that one read more ..

●●

Guest Apr 13, 2022

271

help math

Simplify sqrt(x*sqrt(x*sqrt(x))). Express your answer in simplest radical form in terms of x

Vinculum ●

Guest Apr 13, 2022

272

Pentagon

The vertices of a convex pentagon are (-1,-1), (-3,4), (1,7), (6,5) and (4,-2) . What is the area of the Pentagon?

●

Guest Apr 13, 2022

242

HELP COUNTING

A sack contains 7 red marbles and 3 black marbles. Two marbles are randomly selected, with replacement. What is the probability of choosing a red marble and then a black marble? Express your answer as a common fraction.

●

Guest Apr 13, 2022

177

Ellipse

The foci of a certain ellipse are at (3, 10 + sqrt(105)) and (3, 10 - sqrt(105)) The endpoints of one of the axes are (5, 10) and (1, 10) Find the semi-major axis.

Guest Apr 13, 2022

437

Help for counting

Two fair, six-sided dice are rolled. They are marked so one die has the numbers 1, 3, 5, 7, 9, 11 and the other has the numbers 2, 4, 6, 8, 10, 12. What is the probability that the sum of the numbers rolled is divisible by 5? Express your answer as a common read more ..

●●●●

Guest Apr 13, 2022

330

+41

HELP Mortgage Activity

Cassie is hoping to purchase a 3 bedroom/ 3 bathroom house in her area. The house is on the market for $349,900. Her bank has given her three options for a loan:
15-year mortgage at 4.13% APR, with a required 20% down payment
20-year mortgage read more ..

●●●●

dfranklin4113 Apr 13, 2022

298

Analytic Geometry

The area of rectangle ABCD with vertices A(0, 0), B(0, 4), C(x, 4) and D(x, 0) is square units. If x > 0, what is the value of x?

●●●●●●

Guest Apr 13, 2022

All Questions ⁺⁰236341 Questions

help quick pls

Probability

Probability question

How to calcuate numbers factored 3 or 4 prime factors?

In the diagram, is a line segment. What is the value of ?

Please help if you can :)

Please help! Geometry

help counting

Polygons

Rate problem

tricky 3d-geometry prob!

Pentagon

trig question

Algebra

System

Number Theory

help trig

COUNTINGHELP

help math

Pentagon

HELP COUNTING

Ellipse

Help for counting

HELP Mortgage Activity

Analytic Geometry

2 Online Users

Top Users

Sticky Topics