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Post New Question
All Questions
+0
234777 Questions
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449
1
proper divisor
The proper divisors of 12 are 1, 2, 3, 4 and 6. A proper divisor of an integer N is a positive divisor of N that is less than N. What is the sum of the proper divisors of 284?
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Guest
Jan 20, 2021
0
268
0
Algebra
Write equation of a line through the given point with the given slope (3,-5);m=2
Guest
Jan 20, 2021
0
474
1
sum
What is the sum of all the odd integers between 500 and 100?
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Guest
Jan 20, 2021
0
472
1
trapezoid
In trapezoid ABCD, line AB is parallel to line CD, and AB < CD. The base CD has a length of 8. The legs AD and BC have lengths of 6, and the diagonal BD has a length of 9. Find the area of the trapezoid.
jugoslav
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Guest
Jan 20, 2021
0
419
1
find x + y
\[\large{\begin{cases} x+y+2\sqrt{xy}=64 \\ xy\sqrt{x}+xy\sqrt{y}=32 \end{cases}}\]
Positive real numbers \(x\) and \(y\) satisfy the system of equations above. Find \(x+y\).
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Guest
Jan 20, 2021
0
440
1
help geo
In \( \triangle ABC \), we place points \( D\), \(E\), and \(F \) on sides \( AB\), \(BC\), and \(CA \) respectively, such that \( \dfrac{\overline{AD}}{\overline{AB}} =\dfrac{\overline{BE}}{\overline{BC}}=\dfrac{\overline{CF}}{\overline{CA}} = \dfrac{1}{3}
read more ..
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Guest
Jan 20, 2021
0
396
1
find the integer n
Find the integer $n$ satisfying $\dfrac{{(n + 1)!\, - 3(n - 1)!}}{{(n + 1)!\, + 3(n - 1)!}} = \dfrac{{53}}{{59}}$ .
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Guest
Jan 20, 2021
+2
849
2
+568
Geometry :)
We can find an acute triangle with the three altitude lengths 1, 2, and h, if and only if h^2 belongs to interval (p,q). Find (p, q).
thanks in advance for anyone who helps!
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iamhappy
Jan 20, 2021
+1
419
1
solve for x
Solve $2^{16^x} = 16^{2^x}$.
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Guest
Jan 20, 2021
+1
513
1
A square has an area of 400 square meters. What is the length of its diagonal? (Nearest tenth)
A square has an area of 400 square meters. What is the length of its diagonal? (Nearest tenth)
jugoslav
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Guest
Jan 20, 2021
+1
424
1
modular arithmetic helppp
What is the sum of all positive integer solutions less than or equal to 20 to the congruence 13(3x-2) == 26 (mod 8)?
(in this case == means $\equiv$ in latex)
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Guest
Jan 20, 2021
+2
563
2
How many terms of the arithmetic sequence 88, 85, 82, . . . appear before the number -17 appears?
How many terms of the arithmetic sequence 88, 85, 82, . . . appear before the number -17 appears?
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Guest
Jan 20, 2021
+1
518
4
Two triangles are considered the same if they have the same three side lengths. Find all possible
Two triangles are considered the same if they have the same three side lengths. Find all possible values of P such that there is only 1 possible triangle with integer side lengths and perimeter P.
Thanks to the answerer in advance!
read more ..
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Guest
Jan 20, 2021
+1
437
1
function value
\[\begin{cases} g(x) = x^2 - 11x + 30 \\ g(f(x)) = x^4 - 14x^3 + 62x^2 - 91x + 42 \end{cases}\]
Let \(g\) and \(f\) be the monic polynomial functions that satisfy the system above. What is the value of \(f(7)\)?
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Guest
Jan 20, 2021
+1
394
1
A system equation
y + x = 0
3y +6x = -9
(Graphing method)
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Guest
Jan 20, 2021
+1
489
3
math
The photographer got the baby to smile in 30% of the photos he took. If the baby smiled in 12 photos, how many photos did the photographer
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Guest
Jan 20, 2021
+1
458
2
geometry
PQRS is a rectangle with PQ=16 cm and QR=12 cm . If ABCD is a rhombus formed PQRS , what is the radius of the circle incribed in rhombus ABCD?
read more ..
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Guest
Jan 20, 2021
+1
499
4
+33
~ Word Problem ~
Two men stand back-to-back and walk in opposite directions for 40 yards each. Each of them then turns left and walks another 30 yards each. In yards, how far are the two men from one another?
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guest.exe
Jan 20, 2021
+1
460
3
Lynn bought 8m of string. She used 5/8 of the string to make a flower pot hanger. How much of the string did she have left
Lynn bought 8m of string. She used 5/8 of the string to make a flower pot hanger. How much of the string did she have left
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Guest
Jan 20, 2021
+2
647
2
+49
Circles
A square 10cm on each side has four quarter circles drawn with centers at the four corners. How many square centimeters are in the area of the shaded region? Express your answer in terms of pi.
read more ..
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IWantToHelp
Jan 20, 2021
+1
467
4
question about %
in January my father raised my monthly pay by 30%. in December my pay was lowered by 30%. i think i still have the same amount as before the raise of the%, i get the say amouont as before the raise of it. am i right? what percentage of my initial pay represents
read more ..
IWantToHelp
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Guest
Jan 20, 2021
0
589
5
Solving Equations and Systems of Equations
A red car and a blue car are traveling at the same speed. The red car drives for 3 hours. The blue car drives another half hour and goes 25 more miles. Which equation can be solved to find how fast the cars are going?
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Guest
Jan 20, 2021
+1
380
1
help with line
Find the value of B-A if the graph of Ax + By = 3 passes through the point (-7,-2) and is parallel to the graph of x + 3y = -5.
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Guest
Jan 20, 2021
+1
434
2
How many pairs of consecutive, three-digit multiples of 9 contain the same three digits?
How many pairs of consecutive, three-digit multiples of 9 contain the same three digits?
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Guest
Jan 20, 2021
+1
293
0
coordinates
The circle centered at (2,-1) and with radius 4 intersects the circle centered at (2,-5) and with radius sqrt(10) at two points A and B. Find (AB)^2
Guest
Jan 20, 2021
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