All Questions ⁺⁰236405 Questions

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282

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Seqeuence

The sum of the first n terms of a certain sequence is n/(n + 1). Find the tenth term of the sequence.

Guest May 11, 2022

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251

2

sequences

The first term of a sequence is 13. Starting with the second term, each term is the sum of the cubes of the digits in the previous term. For example, the second term is 1^3 + 3^3 = 28. Find the term.

Guest May 11, 2022

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273

3

I think my formula is incorrect

in triangle OPQ, q=800 in, p=450 in, and

my work:

Guest May 11, 2022

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303

2

can you please check if I'm wrong,

given cos(θ) =-3/4 and angle θ is in quadrant 2, what is the exact value of sin(θ) in the simplest form.

my answer is 12/13.
read more ..

Guest May 11, 2022

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178

0

Geometry

The sides of a rectangle are 1 and 3, and its diagonals intersect forming an angle of theta. Find tan(theta/2).

Guest May 11, 2022

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185

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Algebra

If a + b = 7 and a^3 + b^3 = 45, what is the value of the sum 1/a + 1/b? Express your answer as a common fraction.

Guest May 11, 2022

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243

1

Need help with finding a formula

Lets say we have a triangle ABC, the radius of the inscribed circle is given and so is the perimeter, how would I solve this?

Guest May 11, 2022

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255

2

I think I know what to do, but I don't know how to do it...

Let

Then P can be expressed in the form where a, b, and c are positive integers. Find the smallest possible value of a+b+c.

Guest May 11, 2022

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171

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Piecewise function

Let
f(x) = x/2 + 1 if x <= 1
f(x) = 7 - 3x if x > 1
read more ..

Guest May 11, 2022

+3

299

1

+289

graphing functions

For any real number $k,$ the graph of \[y = 7x^2 + kx - 4k\]passes through a fixed point $(a,b).$ Find $(a,b).$

Glowlife May 11, 2022

+1

280

3

+27

Geometric sequence

A geometric sequece begins...
8,16,32,64...

Let x be 53rd term in this sequence. Compute $\log_{2}(x)$ read more ..

IcanhelpandIneedhelp May 11, 2022

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318

1

Suppose that there is only one value of x for which the distance from (5,6) to (3x-7,ax+2) is 4. If a doesn't equal 0, what is a?

Suppose that there is only one value of x for which the distance from (5,6) to (3x-7,ax+2) is 4. If a doesn't equal 0, what is a?

Guest May 11, 2022

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204

0

trapezoid

In trapezoid EFGH,line EF is parallel to line GH and P is the midpoint of side EH. If the area of triangle PEF is 8 , and the area of triangle PGH is 14 , then find the area of trapezoid EFGH. read more ..

Guest May 11, 2022

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183

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Algebra

The integers G and H are chosen such that
G/(x + 5) + H/(x^2 - 4x) = (x^2 - x + 15)/(x^3 + x^2 - 20x)
for all real values of x except -5, 0, and 4. Find H/G.

Guest May 11, 2022

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164

0

Domain

What is the domain of the function
f(x) = (2x-3)(2x+5)(3x-9)(3x+6)/((x - 1)(x - 2)).
Express your answer as an interval or as a union of intervals.

Guest May 11, 2022

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621

9

Combination question

The word "CROCODILE"
How many ways can we make three groups such that, each group consists of three letters, and the "Cs" are not together in the same group.

●●●●●●●●●

Guest May 11, 2022

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183

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Function

Let
f(x) = 3x^2 + 2 if x <= 8
f(x) = ax - 1 if x > 8
read more ..

Guest May 11, 2022

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278

1

+40

Science question

Ecologists think of _____ as environments where plants and animals live together.
1. conservation question
2. communities
3. ecology
4. erosion

CherryBlossom May 11, 2022

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243

2

what is polunomial

what is polunomial

Guest May 11, 2022

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185

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Algebra

let f(x)=3x+2 and g(x)=ax+b, for some constants a and b. If ab=, and f(g(x))=g(f(x)), for x=0,1,2...9, find the sum of all possible values of a.

Guest May 11, 2022

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250

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x = 90, μ = 43, σ = 8

x = 90, μ = 43, σ = 8

Convert each individual data value to a standardized z-score.

Ages of airline passengers: x = 90, μ = 43, σ = 8 (Round your answer to 3 decimal places.)
read more ..

Guest May 11, 2022

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188

0

Graphing question

The graph of y=f(x) is shown in red. For which x value does f(x)=4?
(Assume grid lines are spaced 1 unit apart)

read more ..

Guest May 11, 2022

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181

0

trapezoid

As shown in the diagram, PQ is the median of trapezoid ABCD, where AB=25 inches and CD= inches. Find XY in inches.

read more ..

Guest May 11, 2022

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321

2

some boring math topic

Park rangers released 4 fish into a pond in year 0. Each year, there were three times as many fish as the year before. How many fish were there after x years? Write a function to represent this scenario.

Guest May 11, 2022

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