All Questions ⁺⁰237783 Questions

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tetrahedron

+84
Find the volume of the tetrahedron with vertices (0,0,0), (3,0,0), (0,5,1), (2,0,-5)

Guest May 15, 2022

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227

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Function

For some constants a and b let
f(x) = 8 - x if x <= 4
f(x) = ax + b if x > 4
The function f has the property that f(f(x)) = x for all x. What is a + b? read more ..

Guest May 15, 2022

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322

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Quadrilateral

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

Guest May 15, 2022

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333

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Number Theory

As n ranges over the positive integers, what is the sum of all possible values of the greatest common divisor of 3n+4 and 7n+15?

Guest May 15, 2022

-1

346

3

+2

help

The perimeter of square is 2. Two cars start from and simultaneously and drive clockwise on the perimeter of square in the same speed. A drone maintains its location as the midpoint of the two cars. How far did read more ..

mathnoobie May 15, 2022

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343

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help geometry

Compute angle x, in degrees.

Guest May 15, 2022

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376

2

+273

Geomtrey

In triangle ABC, and . Find

read more ..

TheEarlyMathster May 15, 2022

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315

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Floor function

What is the range of the function $f(x) = \lfloor 2x \rfloor - x$?
Express your answer in interval notation.

Guest May 15, 2022

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311

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Fractions

Fran randomly chooses a positive integers n, 1 <= n <= 100. Find the probability that is reducible.

Guest May 15, 2022

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280

1

Help

1 bag and 2 pencil boxes cost $d. 2 bags, 4 pencil boxes and 4 erasers cost $28.
(a) How much does one eraser cost? Express your answer in terms of d.
(b) If d = 13, find the cost of an eraser.

Guest May 15, 2022

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324

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Polynomials

The polynomial f(x) has degree 3. If f(0) = 4, f(1)= -2 , f(3) = 0, and f(3) = 28, then what are the x -intercepts of the graph of f(x)?

Guest May 15, 2022

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335

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Triangle question

In a triangle with side lengths 5, 10 and x, what is the sum of all possible integral values of x?

Guest May 15, 2022

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344

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Decimals

Express as a common fraction the reciprocal of

Guest May 15, 2022

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343

2

Algebra

Let S be the set of all real numbers a such that the function (x^2+5x+a)/(x^2-10x-24) can be expressed as the quotient of two linear functions. What is the sum of the elements of S?

Guest May 15, 2022

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332

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Angles

What is the measure (in degrees) of the smallest interior angle of a triangle in which the exterior angle measures have the ratio ?

Guest May 15, 2022

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327

4

Question about vectors.. please help.

The answers are a=1 and a=49/23
read more ..

Guest May 15, 2022

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355

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answer asap

Renee loves chocolates (except those that have cherries inside). She recently bought three boxes that have an assortment of flavours. The first box has 12 different chocolates, including one cherry. The second box has 10 different flavours, including one read more ..

Guest May 15, 2022

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224

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Plz help!!

The manufacturer of a new food product would like to package the product in a tin can. The tin can needs to hold 12 in cubes of product. The manufacturer would like the develop a can that uses as little tin as possible. What should the radius of the can read more ..

Guest May 15, 2022

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339

1

Inverse Function

Let f(x) be defined by
f(x) = x - 3 if x <= 3
f(x) = x^2 - 6x + 9 if x > 3
read more ..

Guest May 15, 2022

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319

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arithmetic series

Let a_1, a_2, a_3, be an arithmetic sequence. If a_1 + a_3 + a_5 = -12 and a_1a_3a_5 = , find all possible values of a_{10}.

Guest May 15, 2022

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320

2

Quadrilateral

In quadrilateral ABCD, we have AB = 3, BC = 6, CD = , and DA = .
If the length of diagonal AC is an integer, what are all the possible values for AC? Explain your answer in complete sentences.

Guest May 15, 2022

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311

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Solve

$\displaystyle\sqrt[3]{3 - x} = -\frac{9}{2}$

Guest May 15, 2022

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333

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Sum

Compute \[\frac{1}{2^3 - 2} + \frac{1}{3^3 - 3} + \frac{1}{4^3 - 4} + \dots + \frac{1}{10^3 - 10}.\]

Guest May 15, 2022

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316

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Inequaity

What interval consists of all u such that neither 2u nor -20u is in the interval ?

Guest May 15, 2022

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