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All Questions
+0
234925 Questions
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298
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Plz help ASAP see picture
Plz help ASAP see picture
Guest
Jan 31, 2021
0
425
1
problem on cones
Two solid right circular cones have the same height. The radii of their bases are \(a\) and \(b\). They are melted and recast into a cylinder of same height. The radius of the base of the cylinder is _____ ?
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Guest
Jan 31, 2021
0
324
1
help urgent ple
A random permutation of the word the word “caltop” is
chosen. The probability that there is at least one string of 4 consecutive letters that is alphabetically ordered can be
expressed as a/720. Find a.
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Guest
Jan 31, 2021
0
263
0
complex roots
At least one of the two quadratic equations \[x^2-2ax+4=0\;\;\textrm{and}\;\; x^2-2ax+2a+3=0\] has complex, non-real roots. How many integers a will satisfy the condition?
Guest
Jan 31, 2021
0
394
2
3 problems on functions
Let $f(x) = 4x - 7$, $g(x) = (x + 1)^2$, and $s(x) = f(x) + g(x)$. What is $s(3)$?
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Guest
Jan 31, 2021
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418
2
pls help
Sides of a Triangle are in the ratio $4:5:6$ . If R denotes the circumradius and r denotes inradius , then find $\dfrac{R}{r}$.
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Guest
Jan 31, 2021
+1
546
2
+328
How many ways can you write 410 as the sum of 4 different 3-digit numbers, assumingorder does not matter?
How many ways can you write 410 as the sum of 4 different 3-digit numbers, assuming order does not matter?
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Potatobird
Jan 31, 2021
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363
1
solve for x
Solve $ \sqrt{4x-3}+\frac{10}{\sqrt{4x-3}}=7 $.
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Guest
Jan 31, 2021
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273
0
simplify
Simplify algebraic fraction
\[\frac { { x }^{ 3 }-{ y }^{ 3 } }{ { x }^{ 4 }+{ x }^{ 2 }{ y }^{ 2 }+{ y }^{ 4 } } \]
Guest
Jan 31, 2021
0
305
1
prime sum
While adding the first few prime numbers (2, 3, 5, 7, ... ), I obtained a total value of 225, I then realized that I missed out on counting one number. Which one is missing?
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Guest
Jan 31, 2021
-1
464
2
+216
Number theory help please
Find the remainder when is divided by 7.
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Jmaster10
Jan 31, 2021
0
310
1
base 2
210 is a number written in decimal representation. Write the same number with base 2.
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Guest
Jan 31, 2021
0
307
1
Euclidean algorithm
Use the Euclidean algorithm to find integers x and y such that 164x+39y=1. Note that while there are many pairs of integers x and y that satisfy this equation, there is only one pair that comes from using the Euclidean algorithm.
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Guest
Jan 31, 2021
0
378
1
combinatorics help?
In each round of a tournament, any one of 5, 4, 3, 2 or 0 points can be scored. Find the number of combinations of each of these scores which yield a total of 30 points in 7 rounds if the ordering of the points does not matter.
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Guest
Jan 31, 2021
-1
514
2
+216
Number theory help please
What integer satisfies and
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Jmaster10
Jan 31, 2021
0
405
1
which is greater
Which is greater, $3^{5^3}$ or $6^{2^6}$?
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Guest
Jan 31, 2021
0
293
1
factors
Let P (n) denote the number of factors of n. Find all values of n which satisfy P(n) = n.
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Guest
Jan 31, 2021
0
483
7
+138
Kinematics
So I took the derivate of V to get the acceleration, but it ends up with displacement still in the equation I believe, so how do I do this.
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SpaceTsunaml
Jan 31, 2021
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488
3
counting
How many words,with or without meaning, each of 3 vowels and 2 consonants canbe formed from the letters of the word INVOLUTE?
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Guest
Jan 31, 2021
0
538
1
3. In triangle ABC , AB=AC, ∠ABC = 72 and segment BD bisects ∠ABC with point D on side AC If point E is on side BC such
3. In triangle ABC , AB=AC, ∠ABC = 72 and segment BD bisects ∠ABC with point D on side AC If point E is on side BC such that segment DE is parallel to side AB and point F is on side AC such that segment EF is
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Guest
Jan 31, 2021
0
248
0
need help with algebra
A , B , C and D play a game of cards , A says to B "If I give you 8 cards , you will have many as C has and I shall have 3 less than what C has . Also, if I take 6 cards from C, I shall have twice as many as D has. "If B and D together have 50 cards, how
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Guest
Jan 31, 2021
0
333
2
Please help quickly !
In the diagram, Triangle BDF and ECF have the same are If DB = 2, BA= 3, and AE = find the length of EC.
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Guest
Jan 31, 2021
0
302
0
help plz
A man has a combination of $\$5$ and $\$10$ notes. If the total number of notes is 20, and the total value of money is $\$120$, what is the quantity of $\$10$ notes?
Guest
Jan 31, 2021
0
488
3
halp!
How many numbers can be expressed as the sum of two or more distinct elements of the set
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Guest
Jan 31, 2021
0
420
1
help with probability
One ball is drawn from a box containing 3 red, 2 blue and x green balls. Find the value of x so that the probability of drawing a green ball is double that of red or blue ball.
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Guest
Jan 31, 2021
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