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All Questions
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234777 Questions
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375
1
The equation of the line joining the complex numbers
The equation of the line joining the complex numbers -5+4i and 7+2i can be expressed in the form
for some complex numbers a and b. Find the product ab.
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Guest
Jan 23, 2021
0
298
0
least possible value
If -5 <= a <= -2 and 2 <= b <= 5, what is the least possible value of ? Express your answer as a common fraction.
Guest
Jan 23, 2021
0
353
1
parabola
The vertex of a parabola is at (12,-4) and its axis of symmetry is vertical. One of the x-intercepts is at (18,0). What is the x-coordinate of the other x-intercept?
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Guest
Jan 23, 2021
0
430
1
help solving
If w, x, y, and z are real numbers satisfying:
w+x+y = -2
w+x+z = -4
w+y+z = 19
read more ..
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Guest
Jan 23, 2021
0
410
1
help plez
In the equation 1/j + 1/k = 2/3, both j and k are positive integers. What is the sum of all possible values for k?
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Guest
Jan 23, 2021
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287
0
stuck on this problem
There is a point inside a regular hexagon. It forms six triangles with the vertices. The areas of the pink triangles are shown. Find the area of the green triangle.
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Guest
Jan 23, 2021
+1
662
2
+308
help
Express this collection of points on the number line using interval notation.
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notsmart2.0
Jan 23, 2021
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475
1
polynomial question
The polynomial equation x^3 + bx + c = 0 where b and c are rational numbers, has 1 + sqrt(2) as a root. It also has an integer root. What is it?
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Guest
Jan 23, 2021
0
362
1
help with algebra
For what real values of a is x^2 + ax + 125 the square of a binomial? If you find more than one, then list the values separated by commas.
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Guest
Jan 23, 2021
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434
4
number theory
N is a four-digit positive integer. Dividing N by 9 , the remainder is 5. Dividing N by 7, the remainder is 5. Dividing N by 5, the remainder is 1. What is the smallest possible value of N?
<
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Guest
Jan 23, 2021
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277
0
function problem
Suppose that f(x) and g(x) are functions on R such that the range of f is [-5,5], and the range of g is [-2,2]. The range of f(x) times g(x) is [a,b]. What is the largest possible value of b?
Guest
Jan 23, 2021
0
737
6
Let a and b be distinct complex numbers on the unit circle. Find the maximum possible value of .
Let a and b be distinct complex numbers on the unit circle. Find the maximum possible value of .
Thank you!
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Guest
Jan 23, 2021
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393
1
quadratic
Krzysztof solved the quadratic equation 11x^2+44x-99=0 by completing the square. In the process, he came up with the equivalent equation (x+r)^2 = s,where r and s are constants.What is r+s.
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Guest
Jan 23, 2021
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542
1
please help
A sweater costs s dollars before tax. If tax is 8.5 percent, than the cost after tax is what number times s dollars?
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Guest
Jan 23, 2021
0
339
1
quadratic
The amount of money a certain company makes can be represented by the graph y = x^2 - 18x - 33 , where x is the quantity produced. What is the smallest quantity at which the company can produce to break even or make a profit?
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Guest
Jan 23, 2021
0
428
3
+6
Please help.
Line $m$ is parallel to line $n$ and the measure of $\angle{1}$ is 1/8 the measure of $\angle{2}$. What is the degree measure of $\angle{5}$?
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MorganFan
Jan 23, 2021
0
436
1
function
The function f is defined by f(n) = f(n − 1) + f(n − 2). It is also true that f(1) = 3 and f(2) = 10. What is the value of f(6)
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Guest
Jan 23, 2021
0
309
1
help counting
The product of the digits of 3214 is 24. How many distinct four-digit positive integers are such that the product of their digits equals 24?
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Guest
Jan 23, 2021
0
430
2
+18
Help Me With This Please
If $f(x)=2/x+1$ , then what is the value of $f^-1$(1/5)$
I would like the answer soon if you can
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Koko123
Jan 23, 2021
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287
0
counting
A pet store has 15 puppies, 6 kittens, and 8 hamsters. Alice, Bob, and Charlie each want to buy a pet. For variety, they each want a different kind of pet. Alice does not like hamsters. How many ways can Alice, Bob, and Charlie buy pets and leave
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Guest
Jan 23, 2021
0
430
1
help right now
Find all solutions to the equation $6x^2 - 31x + 40 = 0.$ If you find more than one, then list the values separated by commas. If the solutions are not real, then they should be written in $a + bi$ form.
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Guest
Jan 23, 2021
0
458
1
I pick two whole numbers $x$ and $y$ between $1$ and $10$ inclusive (not necessarily distinct). My friend picks two numbers $x -4$ and $2y-1
I pick two whole numbers $x$ and $y$ between $1$ and $10$ inclusive (not necessarily distinct). My friend picks two numbers $x -4$ and $2y-1$. If the product of my friend's numbers is one greater than the product of my numbers, then what is the product
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Guest
Jan 23, 2021
0
1197
1
The value of $y$ varies inversely as $\sqrt x$ and when $x=24$, $y=15$. What is $x$ when $y=3$?
The value of $y$ varies inversely as $\sqrt x$ and when $x=24$, $y=15$. What is $x$ when $y=3$?
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Guest
Jan 23, 2021
0
751
1
A group of juniors and seniors took a test. Exactly $\frac{3}{5}$ of the juniors and exactly $\frac{6}{7}$ of the seniors passed the test. I
A group of juniors and seniors took a test. Exactly $\frac{3}{5}$ of the juniors and exactly $\frac{6}{7}$ of the seniors passed the test. If the number of juniors who passed the test was $\frac{2}{3}$ of the number of seniors who passed the test, what
read more ..
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Guest
Jan 23, 2021
0
348
1
help people
Find all solutions to the equation $x^2 - 7x = 30$.
If you find more than one, then list the values separated by commas. If the solutions are not real, then they should be written in $a + bi$ form.
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Guest
Jan 23, 2021
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