All Questions ⁺⁰237641 Questions

0

561

2

Math

Richard and Ayanna live in the country and have a very long driveway. After a heavy snowfall, Richard could shovel out the driveway in 8 hours by himself. If the two of them work together they could finish the job in 3 hours. How long would it take Ayanna read more ..

ElectricPavlov ●●

Guest Dec 9, 2019

+1

779

1

+2

Numbers of people using this forum

How come lately people are no using this forum so much as they used to????!!!!!

off-topic

Huggy2.0 Dec 9, 2019

0

656

4

help

How to solve -30/(2250-0.75*40*40)^0.5 ? I need detail solution of it

Guest Dec 9, 2019

0

407

0

help

Find the ordered pair of positive numbers (x,y) that satisifes x - y = xy = x^2 - y^2.

Guest Dec 9, 2019

0

410

0

help

In the binomial expansion of (x + y)^3, the sum of the two middle terms is equal to the sum of the first and last terms. Find the numerical value of the ratio (x - y)^2 : xy.

Guest Dec 9, 2019

0

451

1

help

Find all ordered pairs of real numbers (x,y) that satisfy x + y + sqrt(x + y) = 56 and x - y + sqrt(x - y) = 30.

Guest Dec 9, 2019

0

409

0

help

Solve for x if sin(x/2) = sqrt(1 + sin(x)) - sqrt(1 - sin(x)) and 0 <= x <= pi.

Guest Dec 9, 2019

0

541

1

help

An integer is chosen at random in the interval 100 < n < 300. Find the probability that this integer is divisible by 7 or 11.

Guest Dec 9, 2019

0

505

1

help

The side of a right triangle all have integral lengths, and the sum of the lengths of one of the legs and the hypotenuse is 49. Find all possible lengths for the other leg.

Guest Dec 9, 2019

-1

1133

4

+87

Explain the answer thoroughly

Let and be real numbers, where and In an infinite grid, I write the numbers
in the first row. After that, each number is equal to times the number above it. For example, the numbers read more ..

Divineology Dec 9, 2019

0

597

1

help

A box, in the shape of a rectangular solid, has a length of 12, a width of 8, and a height of 8. What is the length, along the outside surface of the box, of the shortest path that can be drawn between two of the vertices of the box which do read more ..

Guest Dec 9, 2019

0

420

0

help

If c > a > 0 and a - b + c = 0, find the larger root of ax^2 + bx + c = 0.

Guest Dec 9, 2019

0

474

1

help

Find the value of cos(arcsin(4/5) + arctan(5/12)).

Guest Dec 9, 2019

-1

1311

1

physics help

Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surface of Saturn compared to that on the Earth. Show your work.

off-topic

Guest Dec 9, 2019

0

1315

1

+4

help

A kite is flying 77ft off the ground, and its string is pulled taut. The angle of elevation of the kite is 40°. Find the length of the string. Round your answer to the nearest tenth. please help

thrashrafa Dec 9, 2019

-1

901

1

+318

Pre Calc

Solve the system, or show that it has no solution. (If there is no solution, enter NO SOLUTION. If there are an infinite number of solutions, enter the general solution in terms of x, where x is any real number.)

2/3x+1/4y=3
-1/3x-5/4y=3 read more ..

mharrigan920 Dec 9, 2019

-1

935

1

+318

Pre Calc help

Solve the system, or show that it has no solution. (If there is no solution, enter NO SOLUTION. If there are an infinite number of solutions, enter the general solution in terms of x, where x is any real number.)

6x + 4y = 16 read more ..

mharrigan920 Dec 9, 2019

0

694

1

help

If 2x+7 is a factor of 6x^3+19x^2+cx+35, find c.

Guest Dec 9, 2019

0

432

0

help

If the length of a circumradius of regular octagon ABCDEFGH is 4, the area of the quadrilateral determined by lines AB, CD, EF, and GH is k (2 + sqrt(2)). FInd k.

Guest Dec 9, 2019

+1

999

2

help

A pair of twin primes if a pair of primes that are consecutive odd integers. Find the largest integer that is a divisor of the sum of the two elements in every pair of twin primes, if these two elements are each primes greater than 3.

Guest Dec 9, 2019

0

639

1

help

If a square and a regular hexagon have equal areas, then find the ratio of their perimeters.

Guest Dec 9, 2019

0

458

0

help

Half the perimeter of a rectangle exceed the length of one of its diagonals by one-third the length of the longer side. Find the tangent of the angle formed by its longer side and one of its diagonals.

Guest Dec 9, 2019

0

451

0

help

In base x, 1/5 and are numerals for the same number. Find x.

Guest Dec 9, 2019

0

567

2

help

Find all solutions of x(x^3 - 1) - 6(x^2 + x + 1) = 0.

Guest Dec 9, 2019

0 Online Users