All Questions ⁺⁰237785 Questions

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328

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HALP PLEASE!

How many different combinations can you make to get 50 cents if you only have 6 quarters, 5 dimes, 4 nickels, and 10 pennies?

Guest Jan 9, 2022

0

437

1

Help please

A bicyclist, starting from rest, speeds up for . The magnitude of her acceleration during this time interval is . She then stops pedaling and immediately begins coasting to a stop with an acceleration magnitude of . If the bicyclist read more ..

Guest Jan 9, 2022

0

314

1

Algebra

Find the sum of all integral values of c with c <= 25 for which the equation y = x^2 - 17x - c has two rational roots.

Guest Jan 9, 2022

0

277

0

Number Theory

If 3x+7 = 4x + 11 (mod $16$), then 2x+11 is congruent (mod 16) to what integer between 0 and 15, inclusive?

Guest Jan 9, 2022

0

369

1

Help plz

Find all values of z such that 2/z + 5 = 5/z - 4 - 2/z - 8

Guest Jan 9, 2022

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379

2

System

If a+b = 8, b+c = -3, and a+c = -5 +b, what is the value of the product abc?

Guest Jan 9, 2022

0

329

1

Algebra system

Solve
xy + x + y = 23
yz + y + z = 31
zx + z + x = 47 read more ..

Guest Jan 9, 2022

0

383

1

Number Theory

Find $4^{-1} \cdot 8$ (mod $35$), as a residue modulo 35. (Give an answer between 0 and 34, inclusive.)

Guest Jan 9, 2022

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417

2

Algebra

Five consecutive integers are added. The resulting sum is more than the greatest of the five integers. What was the smallest of the five integers

Guest Jan 9, 2022

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410

1

Geometry

A quadrilateral has angles of q, 5q + 15 , 3q - 55, and 4q - 20. Find the largest angle of the quadrilateral, in degrees

Guest Jan 9, 2022

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379

1

Algebra

Find the quotient and remainder when x^2+2 is divided by (x- 3) +(x - 2) .
Enter both the quotient and the remainder with a comma between them. For example, if the quotient were x+1 and the remainder were 3 , you'd enter "x+1, 3". read more ..

Guest Jan 9, 2022

+2

410

5

+4

Minimizing 3 variable expression

The positive real numbers a, b, c, and x, satisfy the equation "x=a+5b+15c=abc". Find the smallest possible value of x.

I don't want a full solution or an answer as I would wish to solve the problem myself. Can I please have a hint? read more ..

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Eesoog Jan 9, 2022

Jan 8, 2022

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384

1

Coordinates

A line passes through the points (-3,-5) and (8,1). The equation of this line can be expressed in the form Ax+By=C, where A,B , and C are integers with greatest common divisor and is positive. Find A+B+C

Guest Jan 8, 2022

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405

2

geometry

A right triangle has legs of length 6 and b, and a hypotenuse of length c. The perimeter of the triangle is 15. Compute c.

Guest Jan 8, 2022

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419

1

Number theory

The solution of 8x + 1 = 5 + 3x (mod 12) is x = a (mod m) for some positive integers $m \geq 2$ and a < m. Find a + m.

Guest Jan 8, 2022

-7

12

884

11

+118723

Members have a better experience. Their questions get more attention.

Almost everyone is posting as a guest.
If you post as a member your questions will have a far greater chance of a timely and helpful response.
If you are a genuine learner and interact with us, you will become known and answerers will do read more ..

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Melody Jan 8, 2022

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435

3

help geometry

In the figure below, ABCD is a parallelogram, AD = 18 and DC = 27. Segments EG (which is a repeating decimal) and FH (which is a repeating decimal) are perpendicular to sides of the parallelogram as shown, read more ..

Guest Jan 8, 2022

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401

1

Algebra

Find the quotient and remainder when t^4-t^2+3t-7 is divided by t^2-3t+6.

Guest Jan 8, 2022

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402

1

Quadratic

A basketball player shoots a free throw from the foul line. The equation of the path it will travel is h = -4.9t2 + 18t + 1.2 which gives the approximate height, h, of the basketball in meters after t seconds. When does the ball reach its maximum read more ..

Guest Jan 8, 2022

0

422

1

help!

Let \[f(x) = \frac{2x + 3}{kx - 2}.\]Find all real numbers $k$ so that $f^{-1}(x) = f(x).$

I answered (-inf, inf) but its wrong. read more ..

Guest Jan 8, 2022

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393

1

Polynomial

Find a monic quartic polynomial f(x) with rational coefficients whose roots include x = 1 - sqrt(2) and x = 2 + sqrt(7).

Guest Jan 8, 2022

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353

2

Number Theory

What is the smallest positive integer n such that 2n is a perfect square and 3n is a perfect cube and 5n is a perfect fifth power?

Guest Jan 8, 2022

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400

1

Counting problem

My three-digit code is 023. Reckha can't choose a code that is the same as mine in two or more of the three digit-positions. Reckha can otherwise choose any three-digit code where each digit is in the set . How many codes are available for Reckha? read more ..

Guest Jan 8, 2022

0

410

2

help quick

Guest Jan 8, 2022

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