All Questions

277

I need some help on this matrix problem. Thank you

I would really appreciate any help on this problem.
Let and be matrices, and let and be vectors such that neither is a scalar multiple of the other satisfying

read more ..

●●

Guest Jul 21, 2022

307

Inverse function

Let f(x)=3x+4 and g(x)=2x+3. If h(x)=f(g(x)), then what is the inverse of h(x)?

●●●●●

Guest Jul 21, 2022

277

Decimals

For how many integer values of n between 1 and 474 inclusive does the decimal representation of n/474 + n/7 + n/11 terminate?

●

Guest Jul 21, 2022

243

trigonometry

Let anlges alpha, beta, and gamma be as shown in triangle ABC below.

What are tan (alpha + beta), tan gamma, tan (alpha + beta + gamm) in that order?
read more ..

●●●

Guest Jul 21, 2022

273

Number Theory

N=1991*1993*1995*1997*1999. What is the sum of the hundreds, tens and units digits of N?

●

Guest Jul 21, 2022

300

Number Theory

What is the digit in the tens place when 7^2008 is expressed in decimal notation?

●●

Guest Jul 21, 2022

305

Trigonometry

What are the lengths AE and CE?

●

Guest Jul 21, 2022

283

Trigonometry

Let anlges alpha, beta, and gamme be as shown in triangle ABC below.

What are tan alpha, tan beta, tan (beta + gamma) in that order?
read more ..

●

Guest Jul 21, 2022

263

optimization problem

A factory manufactures two types of gadgets: regular and premium.
Each gadget requires two stages, assembly, and finishing, and there are at most 120 hours available for each operation (that is, 120 hours for assembly, and 120 hours read more ..

●

Guest Jul 21, 2022

271

Algebra

There are real numbers A and B such that (5x + 16)/(x^2 - 7x + 10) = A/(x - 2) + B/(x - 5). Find A + B.

●

Guest Jul 21, 2022

299

help coordinates

The x-intercept of a positively-sloped line is -5, and the area of the triangle formed by the line, the x-axis, and the y-axis is 15. What is the slope of the line?

●

Guest Jul 21, 2022

328

Numbers

How many pairs of positive integers (x,y) satisfy the equation x^2 - y^2 = 14 + 2x?

●

Guest Jul 21, 2022

219

Wind turbine graphs please help me!!!!!

Please help me!!!!! THANk you I love you !

Guest Jul 21, 2022

307

algebra

The difference between a number and its reciprocal is 3. What are the possible values of the number?

●●

Guest Jul 21, 2022

218

algebra

What is the length of the segment of the number line whose endpoints satisfy (x - 5)^16 = 3?

Guest Jul 21, 2022

-1

306

Probability

A fair coin is flipped 7 times. What is the probability that at least 6 consecutive flips come up heads?

●●

Guest Jul 21, 2022

-1

294

linear functions

You have linear functions p(x) and q(x). You know p(2)=3, and p(q(x))=4x+17 for all x. Find q(-1).

●●

Guest Jul 21, 2022

-1

249

This question was answered a few days ago, and I think I got the second part. Is it possible for someone to take a look at it?

My question was answered a few days ago, and I think I got the second part. Is it possible for someone to take a look at it?
https://web2.0calc.com/questions/i-really-need-help-with-this-question-i-do-not-understand

Thank read more ..

●

Guest Jul 21, 2022

-1

312

Coordinates

For what value of k does the line represented by the equation 1-kx = -3y contain the point (4,-8)?

●●

Guest Jul 21, 2022

-1

259

Number Theory

Suppose that x and y are positive integers such that x^3*y^2=46656. What is the sum of all possible values of x?

●

Guest Jul 21, 2022

-1

261

number theory

Let k be the largest integer such that 343/7^k is an integer. What is the remainder when 343/7^k is divided by 7?

●

Guest Jul 21, 2022

Jul 20, 2022

-1

295

Quadrilateral

In quadrilateral ABCD, AB = 8, BC = 20, CD = 5*sqrt(2), angle ABC = 90, and angle BCD = 45. What is the area of ABCD?

●

Guest Jul 20, 2022

-1

277

Probability

Consider the regular octahedron as shown. Each edge of the octahedron has a length of 1. An ant starts at the vertex A and crawls a total distance of 3 units along the edges of the octahedron. Any time the ant reaches a vertex of the octahedron, it randomly read more ..

●●●●●●●

Guest Jul 20, 2022

-1

296

Geometry problem

Find the number of square units in the area of the shaded region.

●●

Guest Jul 20, 2022

All Questions ⁺⁰237683 Questions

I need some help on this matrix problem. Thank you

Inverse function

Decimals

trigonometry

Number Theory

Number Theory

Trigonometry

Trigonometry

optimization problem

Algebra

help coordinates

Numbers

Wind turbine graphs please help me!!!!!

algebra

algebra

Probability

linear functions

This question was answered a few days ago, and I think I got the second part. Is it possible for someone to take a look at it?

Coordinates

Number Theory

number theory

Quadrilateral

Probability

Geometry problem

1 Online Users

Top Users

Sticky Topics