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Post New Question
All Questions
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230619 Questions
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314
1
Help Please!!!!
For each pair of real numbers $a \ne b$, define the operation $\star$ as\[ (a \star b) = \frac{a + b}{a - b}. \]What is the value of $((1 \star 2) \star 3)$?
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Guest
Jul 18, 2021
0
377
8
help
An equiangular polygon with n sides has 162-degree interior angles. Find the integer n.
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Guest
Jul 18, 2021
0
433
1
+41
a quick Functional Operations question :)
Define $a \ \# \ b$ as the arithmetic mean of $a$ and $b$. What is the value of $((1\ \#\ 2)\ \#\ 3) \ \# \ 4$? Express your answer as a common fraction.
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CENTTRAL
Jul 18, 2021
+1
378
3
Algebra
Find the unique pair of real numbers (x,y) satisfying
(3x^2 + 6x + 5)(2y^2 + 8y + 10) = 4.
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Guest
Jul 18, 2021
-1
338
1
+41
Domain and Range Question :)
For how many values of $x$ is the expression $\frac{x^2-9}{(x^2+2x-3)(x-3)}$ undefined?
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CENTTRAL
Jul 18, 2021
0
398
3
Positive Integers
If a, b, and c are positive integers satisfying ab + c = bc + a = 13 and ac + b = 41, what is the value of a + b + c?
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Guest
Jul 18, 2021
0
345
1
help math
There are some red and green paper clips in a box. There are 48 more red than green paper clips. 50% of the red paper clips is equal to 3/4 of the green paper clips. How many paper clips are there in the box altogether?
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Guest
Jul 18, 2021
0
269
3
help asap
Let abc be an equilateral triangle with side length 1. Point n lies on the side bc such that bc = 2cn. Find the length of an.
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Guest
Jul 18, 2021
0
279
1
help asap algebra
A bunny walks on the x-axis. At some point it makes a jump between two points on the axis according to the equation y = (-1/3)(x-1)(x-7). Plot in the coordinate plane the trajectory of the bunny's jump and find the height of the jump.
read more ..
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Guest
Jul 18, 2021
0
363
2
Area
Find the area of a triangle ABC, which AB = AC = 1 and
(a) angle A = 60
b. angle A = 90
read more ..
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Guest
Jul 18, 2021
0
439
3
Trig
Suppose we have , , and , as in the picture below:
Find the length of the median from to .
read more ..
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Guest
Jul 18, 2021
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288
2
Geometry
The lengths of the sides of isosceles triangle ABC are 3x + 62, 7x + 30, and 5x + 60 feet. What is the least possible number of feet in the perimeter of ABC?
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Guest
Jul 18, 2021
0
355
1
coordinates
A line segment has one endpoint at (6, 8) and midpoint at (-1, -1). What is the sum of the coordinates of the other endpoint?
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Guest
Jul 18, 2021
+1
431
1
+57
Law of sines and cosines problem
Consider with and . Let be a point on such that and , as in the picture below:
Find
read more ..
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taeijr
Jul 18, 2021
+1
440
3
help plz
A 100-foot rope is cut into three pieces. The first piece is three times as long as the second, and the third piece is 30 feet shorter than the second. How many feet long is the shortest piece?
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Guest
Jul 18, 2021
0
351
1
algebra
For what values of j does the equation (2x + 7)(x - 5) = -43 + jx + x^2 have exactly one real solution? Express your answer as a list of numbers, separated by commas.
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Guest
Jul 18, 2021
0
222
0
algebra
Suppose that for some a,b,c we have a + b + c = 1 , ab + ac + bc + abc = 4. What is a^3 + b^3 + c^3?
Guest
Jul 18, 2021
+1
416
4
+197
I need some help with this problem
Solve the inequality (s+8)(s-1).
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icecreamlover
Jul 18, 2021
+1
338
0
+126
off topic: existential crisis
does anybody else ever walk through downtown (or something along those lines) and think about how many people's lives/experiences you're walking through? this could be the day that somebody proposes to their partner, or the day that somebody recieves news
read more ..
uvacowdo
Jul 18, 2021
+2
468
4
+126
an interesting problem i need help on
Determine the sum of all real numbers satisfying
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uvacowdo
Jul 18, 2021
0
306
0
+24
Someone help pls
Show that if is a primitive root of unity for , then is a primitive root of unity.
hendy
Jul 18, 2021
0
321
1
+68
Help please
Let be a sixth root of unity. Find all possible values of .
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brinlin
Jul 18, 2021
0
368
1
Algebra
sqrt(79 + 24*sqrt(7)) can be written in the form a + b*sqrt(c), where a, b and c are integers and c has no factors which is a perfect square of any positive integer other than 1. Find abc.
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Guest
Jul 18, 2021
0
185
0
math
The ratio of the areas of two squares is 32/3. After rationalizing the denominator, the ratio of their side lengths can be expressed in the simplified form a*sqrt(b)/c where a, b, and c are integers. What is the value of the sum a + b + c?
read more ..
Guest
Jul 18, 2021
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