All Questions ⁺⁰238236 Questions

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262

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six to the power by 2

six to the power by 2

Guest Dec 14, 2022

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260

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counting

How many solutions are there to the equation
u + v + w + x + y + z = 18
where u, v, w, x, y, and z are nonnegative integers, and x is at most 10?

Guest Dec 14, 2022

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309

2

Help!!!

The two circles below are externally tangent. A common external tangent intersects line $PQ$ at $R.$ Find $QR.$ [asy] unitsize(0.3 cm); pair A, B, C, D, E; A = (0,0); B = (8,0); C = (20,0); D = intersectionpoint(Circle(A,5), arc((A + C)/2, abs(A - C)/2, read more ..

Guest Dec 14, 2022

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213

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Analytic geometry

A median of a triangle is a line segment joining a vertex of a triangle to the midpoint of the opposite side. The three medians of a triangle are drawn below.

Note that the three medians appear to intersect at the same point! Let's read more ..

Guest Dec 14, 2022

Dec 13, 2022

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210

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graphing question

The graph of y = f(x) is shown below.

For each point (a,b) that is on the graph of y = f(x), the point ((a - 7)/2, (3b + 1)/4) is plotted, forming the graph of another function y = g(x). As an example, the point read more ..

Guest Dec 13, 2022

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254

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Counting

In how many ways can you distribute 10 indistinguishable boxed among 8 distinuishable boxes, if at least one of the boxes must be empty?

Guest Dec 13, 2022

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242

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Counting questions

(a) In how many ways can you distribute 4 distinguishable balls among 3 indistinguishable boxes?

(a) In how many ways can you distribute 4 indistinguishable balls among 5 distinsuishable boxes?

Guest Dec 13, 2022

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214

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help plz

Fill in the blanks to make the equation true. (Each blank should contain a 2-digit number)

18/18 + 19/18 + 20/18 + ... + 45/18
read more ..

Guest Dec 13, 2022

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225

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Factoring

We are looking to factor 23x^2 + kx - 5 + x^2 - 3. Some values of k allow us to factor it as a product of linear binomials with integer coefficients. what are all such values of k?

Guest Dec 13, 2022

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236

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Y=2x+8. Find Y if x is 2

Y=2x+8. Find Y if x is 2

Guest Dec 13, 2022

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209

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Probability

Valeria has three coins, each of which has a probability of 1/2 of coming up heads. On her first turn, she flips all three coins. If all three come up heads, then she stops. Otherwise, for her second turn, she flips any coins that came up tails. read more ..

Guest Dec 13, 2022

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216

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bing

If 10% of x is 20, what is 23% of x?

Guest Dec 13, 2022

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196

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Probability

Two points on a circle of radius 1 are chosen at random. Find the probability that the distance between the two points is at most 1.5.

Guest Dec 13, 2022

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223

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Scientific Notation

Guest Dec 13, 2022

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204

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Counting

(a) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends. (Not everyone has to get a sticker.)

(b) Find the number of ways that Magnus can give out 20 identical stickers to 5 of read more ..

Guest Dec 13, 2022

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214

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Algebra

Arrange the following numbers in increasing order (smallest first, biggest last):

A = 2*1/2*4*1/6
B = 12*128 read more ..

Guest Dec 13, 2022

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290

1

help plz

The grid below is made up of line segments, like the line segment in red.
There are a number of paths that go from A to B in the grid, where every step goes to the right or up. If we choose a line segment at random, then what is the expected number of read more ..

Guest Dec 13, 2022

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235

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fractions

Guest Dec 13, 2022

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235

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pascal's triangle

The entries in a certain row of Pascal's triangle are
1, n, ..., n, 1

The average of the entries in this row is 2. Find n. read more ..

Guest Dec 13, 2022

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222

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plz help really stuck

hi i need help on these questions i cant get the right answer

find the following intergrals
read more ..

Guest Dec 13, 2022

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374

1

simmon

Brooklyn runs a farm stand that sells strawberries and grapes. Each pound of strawberries sells for $3.75 and each pound of grapes sells for $1.75. Brooklyn sold 12 more pounds of strawberries than pounds of grapes and made $155 altogether. Determine the read more ..

Guest Dec 13, 2022

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241

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Functions

The functions f and h are defined as follows:
f(x) = (x + 5)/(x - 7) and h(x) = (x + 5)(x - 7).

Explain why the functions f and h are not the same function. read more ..

Guest Dec 13, 2022

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201

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geometry

Let AB be a diameter of a circle, and let C be a point on the circle such that AC=8 and BC=14 The angle bisector of ACB intersects the circle at point M Find CM.

Guest Dec 13, 2022

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289

4

+660

Solve for x:

Keihaku Dec 13, 2022

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208

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Function

The function f(n) satisfies
binom(2n)n - binom(2n + 1)(2n) = f(n) *binom(2n + 1)(n + 1)
for all positive integers n. Find f(n).

Guest Dec 13, 2022

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