All Questions ⁺⁰237983 Questions

-2

103

1

+818

domain

Find the domain of the function $$f(x)=\sqrt{-10x^2-11x+6+9x^2-5x}.$$

maximum Aug 22, 2023

-1

104

8

probability and geometry

Two buses - one Canadian, and the other American - will arrive at the same rest stop at a random time between 1:00 and 2:00, wait for k<60 minutes, and then leave. The probability that the two buses will be at the rest stop at the same time is 51/100. read more ..

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Guest Aug 22, 2023

-2

105

2

+818

gcd

Find the greatest common divisor of $2^{1001}-1$ and $2^2-1$.

maximum Aug 22, 2023

0

135

2

Help plz

All members of our painting team paint at the same rate. If $20$ members can paint a $2000$ square foot wall in $35$ minutes, then how long would it take the $20$ members to paint a $5000$ square foot wall, in minutes?

Sunghoon ●●

Guest Aug 22, 2023

0

153

3

geometry help

A point is randomly chosen inside a square of side length 2. What is the probability that the distance between the chosen point and the nearest corner of the square is between 1/2 and 1?

Guest Aug 22, 2023

0

56

3

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. Which fraction is equal to 0.13

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. Which fraction is equal to 0.13 ?

Guest Aug 22, 2023

-1

131

1

+1944

need help trapezoids quick

In the diagram, PQRS is a trapezoid with an area of 12. RS = 7 and PQ = 28. What is the area of triangle PQS?

tomtom Aug 22, 2023

-1

147

2

+12

Please help

Carissa the chessplayer is a very, very slow walker. In fact, she walks at $100$ meters per hour when walking uphill, $120$ meters per hour when walking across flat ground, and $150$ meters per hour when walking downhill. One day, Carissa walks across Boston read more ..

Newuserdummy Aug 22, 2023

-1

128

2

+12

helpp please urgent!!!!

Our badminton team has finished $75\%$ of its season. So far, we have won $45\%$ of the games we played. What percent of the remainder of our games must we win in order to finish the season with the same number of wins as losses?

Newuserdummy Aug 22, 2023

-2

90

1

+1348

need help plz

I think I need to use discriminant
Find the positive value of $n$ so that the quadratic equation $4x^2 + nx + 25 = 2x^2 + 5$ has exactly one solution in $x$.

The3Mathketeers ●

sandwich Aug 22, 2023

-2

121

1

+1348

quadratic equations

Find the value of $k$ if the roots of the quadratic equation $7x^2 + 3x + k = 0$ are $\frac{-3 \pm 3 \sqrt{29}}{14}$.

sandwich Aug 22, 2023

0

148

0

probability

Real numbers $x$, $y$, and $z$ are chosen at random in the interval s$-1\le x \le 1$, $-1\le y \le 1$, and $-1\le z \le 1$. What is the probability that $x + y + z \le \frac{3}{2}$?

Guest Aug 22, 2023

0

129

1

Systems of equations for this problem?

I've tried working this out on my own but I'm stuck on how to set up the equations for this problem
Let z and w be complex numbers such that |5z-2w|=11 and Find |3z+4w|.
If I could have some help read more ..

Guest Aug 22, 2023

-2

141

1

+1348

help with circle

Find the radius of the circle inscribed in triangle $ABC$ if $AB = 5$, $AC = 6$, and $BC = 8$.

sandwich Aug 22, 2023

-2

94

1

+1348

help with semicircles

In the figure, triangle $ABC$ is inscribed in a semicircle with diameter $AC$ of length $20$ inches, and $AB = 10$ inches. When the area of the shaded region, in square inches, is expressed in the form $a\pi - b,$ what is the value of $a + b\,?$ read more ..

sandwich Aug 22, 2023

-1

147

1

+789

help inverse

Find the multiplicative inverse of $27$ modulo $38$. Express your answer as an integer from $0$ to $37$, inclusive.

bingboy Aug 22, 2023

-1

96

1

+789

inverses

Find the numbers of integers $n$, $0 \le n \le 18$, such that $n$ has a multiplicative inverse modulo $19$.

bingboy Aug 22, 2023

-1

98

1

+789

inverses

The table below shows the multiplicative inverses of the first $9$ positive residues modulo $47$.
\begin{tabular}{c|ccccc}
$b$ & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 \\ \hline
inverse of $\,b$ &read more ..

bingboy Aug 22, 2023

0

147

1

Help ME

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

Guest Aug 22, 2023

0

134

0

help with calculus

The function $f(x),$ defined for $x \ge 0,$ has the following properties:
$f(x) \ge \sqrt{x}$ for all $x \ge 0.$
The function $f(x)$ is increasing.
The area between the graph of $y = f(x)$ for $0 \le x \le a$ and the graph of $y = x^2$ read more ..

Guest Aug 22, 2023

0

121

0

+82

[Deleted]

xxyoohoo Aug 22, 2023

-1

155

1

help

Guest Aug 22, 2023

-1

98

1

+818

domain

Find the domain of the function $$f(x)=\sqrt{3+5-\sqrt{x}}.$$

maximum Aug 22, 2023

-1

94

1

+818

domain

Find the smallest integer $c$ such that the domain of the function $f(x)=\frac{x^2+1}{x^2-x+c+3x^2-7x}$ is all real numbers.

maximum Aug 22, 2023

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