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644

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(a) Compute the sum

(b) Compute the sum read more ..

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Guest Jul 1, 2020

522

help

A tank has two inlets and an outlet (a pipe that removes water from the tank). The first inlet can fill a tank in 36 hours, while the second one can fill it in 27 hours. The outlet can empty the tank in 18 hours. How many hours read more ..

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Guest Jul 1, 2020

514

please help.

Let be a quadratic polynomial such that, , and Let Find the sum of the coefficients of the terms in that have even degree. (For example, the sum of the coefficients of the terms in that read more ..

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Guest Jul 1, 2020

513

please help

In a children's park, the ratio of the number of adults to the number of children is 1:4. After five minutes, 1 adult and 10 children came. The ratio became 1:5. What was the original number of adults?

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Guest Jul 1, 2020

444

help with number theory

A 2015 digit number is multiplied by 54 to yield the last two digits as 68 in the same order. If the same number is multiplied by 46, the last two digits in order are?

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Guest Jul 1, 2020

493

Please help. I am stuck on the graph portions of the problem.

The graph of is shown below. Assume the domain of is and that the vertical spacing of grid lines is the same as the horizontal spacing of grid lines.
I was not able to upload the graph so you can view it here: https://ibb.co/r5M3Czt
Part read more ..

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Guest Jul 1, 2020

532

please help on quick problem

The sum of two positive integers is 97.
If the larger number is divided by smaller number, the quotient is 7 and the remainder is 1.
Find the difference between the two numbers.

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Guest Jul 1, 2020

935

+26

Please Help!

What is the area, in square units, of a square whose sides are the same length as the radius of a circle with a circumference of $12\pi$ units?

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lionnalostet Jul 1, 2020

539

help

There are 120 four digit numbers that contain only the digits 1,2,3,4,5 each at most once. Find the sum of all such numbers.

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Guest Jul 1, 2020

579

+865

need some assistance... :)

If the second term of a geometric sequence of real numbers is -2 and the fifth term is 16, then what is the fourteenth term?

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AnimalMaster Jul 1, 2020

685

can anyone help

It takes 1629 digits to number the pages of a book. How many pages does the book have?

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Guest Jul 1, 2020

479

+865

help!!!

https://web2.0calc.com/questions/help_30847

nvm got it

AnimalMaster Jul 1, 2020

487

probability

When we toss 5 fair coins, which sequence is more likely to happen?
A: Getting 2 heads
B: Getting 4 heads

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Guest Jul 1, 2020

653

+738

please help! :)

There is a polynomial which, when multiplied by gives . What is that polynomial?

read more ..

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lokiisnotdead Jul 1, 2020

449

help!

Solve the system

x + 2y = 7
-4x - 5y = 11 read more ..

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Guest Jul 1, 2020

Jun 30, 2020

474

need help

In a fort,300 men had provisions for 90 days.After 20 days,50 men left the fort.How long would the food last at the same rate?

Please help with a hint.

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Guest Jun 30, 2020

358

please help with quick counting problem

Find the number of ways of arranging the letters of the word 'ARRANGE' so that the two 'R's are not next to each other.

Guest Jun 30, 2020

369

question on coordinates

In the coordinate plane, let R be the region defined by 2 <= |x| + |y| <= 4. Find the area of R.

Guest Jun 30, 2020

513

help

Let P and Q be constants. The graphs of the lines x + 5y = 7 and 18x + Py = Q are perpendicular and intersect at the point (-3,2). Enter the ordered pair (P,Q).

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Guest Jun 30, 2020

555

help

In the polygon to the right, all adjacent edges are at right angles so that all its interior angles are either 90∘ or 270∘. The four longer edges are equal in length, and all of the shorter edges are also equal in length. The area of the shape read more ..

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Guest Jun 30, 2020

486

please help

12 people showed up for volleyball practice. How many ways can they be divided into two teams of six people?

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Guest Jun 30, 2020

479

help

Let P and Q be constants. The graphs of the lines x + 5y = 7 and 18x + Py = Q are perpendicular and intersect at the point (-8,-3). Enter the ordered pair (P,Q).

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Guest Jun 30, 2020

388

help

Factor x^2 - 4ax + 4a^2.

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Guest Jun 30, 2020

541

Why?

Why I can't use calculator?

off-topic

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Guest Jun 30, 2020

540

MATH

To express 20 as a sum of distinct powers of 2, we would write $20 = 2^4 + 2^2$. The sum of the exponents of these powers is $4 + 2 = 6$. If 1562 were expressed as a sum of distinct powers of 2, what would be the least possible sum of the exponents of these read more ..

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ClaireHYC Jun 30, 2020

All Questions ⁺⁰234773 Questions

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help with number theory

Please help. I am stuck on the graph portions of the problem.

please help on quick problem

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need some assistance... :)

can anyone help

help!!!

probability

please help! :)

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need help

please help with quick counting problem

question on coordinates

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MATH

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