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All Questions
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234922 Questions
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333
2
Geometry
Circle A is in the interior of circle B. The diameter of circle B is 16 cm. What is the diameter of circle A for which the ratio of the shaded area to the area of circle A is 8:1?
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Guest
Oct 24, 2021
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200
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Geometry proving question
Prove that the inradius of a right triangle with legs of length a and b and hypotenuse c is (a+b-c)/2.
I have tried the problem a few times , but can't find the answer
,
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Guest
Oct 24, 2021
0
255
1
help geometry
Two sectors of a circle of radius 12 overlap as shown, with P and R as the centers of the respective circles. Determine the area of the shaded region.
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Guest
Oct 24, 2021
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244
1
Geometry Help
Let H be the orthocenter of the equilateral triangle ABC. We know the distance between the orthocenters of AHC and BHC is 12. What is the distance between the circumcenters of AHC and BHC?
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Guest
Oct 24, 2021
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249
2
help pls
Let a, b, and c be constants, and suppose that the inequality (x-a)(x-b)/(x-c) <= 0 is true if and only if either x<-4 or |x-25|<=-1. Given that a
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Guest
Oct 24, 2021
-2
288
10
Find all solutions with to the equation ITS NOT JUST pi/3 LOL
Find all solutions with to the equation ITS NOT JUST pi/3 LOL
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Guest
Oct 24, 2021
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260
2
Probability
A stick has a length of 5 units. The stick is then broken at two points, chosen at random. What is the probability that all three resulting pieces are shorter than $3$ units?
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Guest
Oct 24, 2021
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283
3
Probability
Wu rolls two fair, six-sided dice. You are not told what the rolls were, but you are told that the sum of the two rolls is a prime. What is the probability that the sum of the two rolls is 2?
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Guest
Oct 24, 2021
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237
1
Geometry
If the diameter of a right cylindrical can with circular bases is increased by 25%, by what percent should the height be increased in order to triple the volume of the original can?
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Guest
Oct 24, 2021
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252
1
Number Theory
There are two number A and B. A is a 2-digit number which is a multiple of 8. B is a 2-digit number which is a multiple of 15. What is the largest possible difference between the two numbers A and B?
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Guest
Oct 24, 2021
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391
2
+137
Need Help ASAP
After my salary was increased by 16% it was $52,200. What was my salary before the increase?
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NaturalDisaster
Oct 24, 2021
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242
1
help Algebra
Suppose that for some a, b, c, we have a + b + c = 1, ac + ac + bc = abc = 4. What is a^3 + b^3 + c^3?
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Guest
Oct 24, 2021
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293
2
How many angles satisfy the equation
How many angles satisfy the equation
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Guest
Oct 24, 2021
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276
4
QUICK
Find all solutions with to the equation
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Guest
Oct 24, 2021
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201
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Algebra
I choose a random integer n between 1 and 10 inclusive. What is the probability that for the n I chose, there exist no real solutions to the equation $x(x+8) = -n$? Express your answer as a common fraction.
Guest
Oct 24, 2021
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429
1
Counting
1. Nine points are arranged in a 3 x 3 grid, as shown below. In how many different ways can you choose three points, so that they form a triangle?
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Guest
Oct 24, 2021
0
200
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Couting question
In how many ways can you spell the word FOOT in the grid below? You can start on any letter F, then on each step you can step one letter in any direction (up, down, left, right, or diagonal)
\begin{array}{cccc} F & F &
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Guest
Oct 24, 2021
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221
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Geometry
A spiral staircase turns 270 degrees as it rises 10 feet. The radius of the staircase is 5 feet. What is the number of feet in the length of the handrail? Express your answer as a decimal to the nearest tenth.
Guest
Oct 24, 2021
0
245
1
Counting question
A coin is tossed 10 times. How many different sequences of tosses could there have been, if at least $3$ of the tosses were heads?
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Guest
Oct 24, 2021
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261
1
النادي الرياضي
وزعت هند 598 كيلو جرام من التمر على 33 عائله فقيرة بالتساوي ,كم كيلو جرام تقريبا كان نصيب العائلة الواحدة
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Guest
Oct 24, 2021
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210
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Pyramids
A right square pyramid with base edges of length 8*sqrt(2) units each and slant edges of length 10 units each is cut by a plane that is parallel to its base and 4 units above its base. What is the volume, in cubic units, of the new pyramid that is cut off
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Guest
Oct 24, 2021
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220
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Pyramid
Rectangle ABCD is the base of pyramid PABCD. If AB = 8, BC = 4, $PA \perp AD$, $PA \perp AB$, and PB = 19, then what is the volume of PABCD?
Guest
Oct 24, 2021
0
235
0
Image of function
. Let f : R 7→ R be defined by f(x) = x(4 − x). What is the image of f ?
(a) R
(b) ( − ∞, 0]
(c) ( − ∞, 2]
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Guest
Oct 24, 2021
0
331
2
sqrt3(643 = 8.6311829921584391
sqrt3(643 = 8.6311829921584391
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Guest
Oct 24, 2021
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339
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algebra
What is the coefficient of x^3 in (x + 1)^8 + (2x + 3)^2?
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Guest
Oct 24, 2021
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