All Questions ⁺⁰237717 Questions

0

1

0

+306

Math

In physics, Ohm's law says that current through a wire, $I$, is directly proportional to voltage, $V$, and inversely proportional to resistance, $R$:
I = V/R
It's also true that resistance is directly proportional to the length of the wire. read more ..

AUnVerifedTaxPayer Aug 26, 2025

0

1

0

+306

Math

A plane flies from Penthaven to Jackson and then back to Penthaven. When there is no wind, the round trip takes $3$ hours and $20$ minutes, but when there is a wind blowing from Penthaven to Jackson at $70$ miles per hour, the trip takes $3$ hours read more ..

AUnVerifedTaxPayer Aug 26, 2025

0

1

1

2

+1820

Math

What is the domain of the function f(x) = sqrt(5 - 8x + x^2)?

blackpanther Aug 26, 2025

0

1

1

0

+1820

Math

What is the range of the function f(x) = sqrt(5 - 8x + x^2)?

blackpanther Aug 26, 2025

0

1

1

0

+1024

Math

The domain of the function q(x) = x^4 + 8x^2 + 7x^3 is (-infty,infty). What is the range?

Hi6942O Aug 26, 2025

0

1

0

+1024

Math

The domain of the function r(x) = (x^2 + 1)/(1 - x)^2 is (-infty,1) U (1,infty). What is the range?

Hi6942O Aug 26, 2025

0

1

0

+866

Math

Find all values of t such that t - 1, t + 1, and 6 - t could be the lengths of the sides of a right triangle.

cooIcooIcooI17 Aug 26, 2025

0

1

0

+866

Math

Suppose f is a function such that f(f(x)) = x for all x in the domain of f, and suppose that f(-3) = 0. If f(x) = ax + b, then find a and b. Find all solutions to f(x) = 5.

cooIcooIcooI17 Aug 26, 2025

0

1

1

0

+351

Math

Suppose the domain of f is (-1,3). Define the function g by
g(x) = f(2/x + x/2).
What is the domain of g?

jaekg Aug 26, 2025

0

1

1

0

+351

Math

Suppose the domain of f is (-1,3). Define the function g by
g(x) = f((x + 1)(x - 2)).
What is the domain of g?

jaekg Aug 26, 2025

0

1

0

+990

Math

The function f(x) is defined for 1 \le x \le 5 as follows:
f(x) = 2x + 8 if 1 \le x \le 2
f(x) = 13 - 5x if 2 < x \le 3
f(x) = 20 - 14x if 3 < x \le 4 read more ..

gnistory Aug 26, 2025

0

1

1

+990

Math

A line and a circle intersect at $A$ and $B,$ as shown below. Find the distance between $A$ and $B$.
The line is x = 4, and the equation of the circle is x^2 + y^2 = 25.

gnistory Aug 26, 2025

0

1

1

0

+990

Math

Find the coordinates of the center of the circle.
The points on the circle are (22,15), (-25,0), (27,-6).

gnistory Aug 26, 2025

0

1

0

+997

Math

Find $t$ if the expansion of the product of $x^3$ and $x^2 + tx$ has no $x^2$ term.

magenta Aug 26, 2025

0

1

0

+997

Math

There exists a polynomial $f(x)$ and a constant $k$ such that
(x^2 - 2x - 5) f(x) = 2x^4 + 19x^3 + kx^2 - 15x - 1.
What is $k?$

magenta Aug 26, 2025

0

1

0

+312

Need help

Let N be a positive integer. The number N has three digits when expressed in base 7. When the number N is expressed in base 18, it has the same three digits, in reverse order. What is N? (Express your answer in decimal read more ..

CInsbstnkng Aug 26, 2025

0

1

0

+312

help me

The following cards are split into three piles at random, so that every pile contains the same number of cards. What is the probability that every pile contains an Ace?
Ace of spades
Ace of hearts
Ace of diamonds read more ..

CInsbstnkng Aug 26, 2025

0

1

1

1

+89

Algebra

Solve the given system of equations
2y = -x + 9
3x - 6y = -15
The solution to the system is read more ..

Alyssiaca Aug 26, 2025

0

1

1

+67

Hard Algebra

For the function satisfies the relations and
What is the value of the expression
Express your answer as a common fraction.

bqimath Aug 26, 2025

Aug 25, 2025

0

1

1

2

+1297

Math

Alex chooses a number at random from the set {1, 2, 3, 4, 5}. Winnie also chooses a number at random from the same set. (They can choose the same number.) What is the probability that the product of their numbers is at least 4? read more ..

AnswerscorrectIy Aug 25, 2025

0

1

1

0

+1297

Math

Suppose $f(x)$ is a function defined for all real $x$, and suppose $f$ is invertible (that is, $f^{-1}(x)$ exists for all $x$ in the range of $f$). If the graphs of $y=f(x)$ and $y=f(x^3)$ are drawn, at how many points do they intersect?

AnswerscorrectIy Aug 25, 2025

Aug 24, 2025

Aug 23, 2025

0

2

1

0

+971

Math

In triangle $ABC,$ the angle bisector of $\angle BAC$ meets $\overline{BC}$ at $D.$ If $\angle BAC = 60^\circ,$ $\angle CAD = 45^\circ,$ and $AD = 24,$ then find the area of triangle $ABC.$

booboo44 Aug 23, 2025

0

1

1

+971

Math

In triangle $ABC,$ $\angle B = 90^\circ.$ Point $X$ is on $\overline{AC}$ such that $\angle BXA = 90^\circ,$ $BC = 15,$ and $CX = 5$. What is $BX$?

booboo44 Aug 23, 2025

0

2

1

1

+1297

Math

In triangle $ABC,$ let the angle bisectors be $\overline{BY}$ and $\overline{CZ}$. Given $AB = 12$, $AY = 12$, and $AC = 12$, find $BC$.

AnswerscorrectIy Aug 23, 2025

1 Online Users