All Questions ⁺⁰237784 Questions

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292

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Graphing

The graph of y = f(x) is shown in red below. Find f(2).

Guest Feb 22, 2022

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305

1

Please help me

There were some chocolate and strawberry cupcakes in a cake shop. If 10 chocolate cupcakes were sold, 2/7 of the cupcakes left would be chocolate cupcakes. If 18 strawberry cupcakes were sold, 1/3 of the cupcakes left would be chocolate cupcakes. How many read more ..

Guest Feb 22, 2022

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275

1

plz plz plz help

Let $f(n)$ be the sum of all the divisors of a positive integer $n$. If $f(f(n)) = n+2$, then call $n$ superdeficient. How many superdeficient positive integers are there?

Guest Feb 22, 2022

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238

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(ii) pls

Guest Feb 22, 2022

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382

2

hlp plz asap

i really really need help plz can anybbody help due tommmorow

Guest Feb 22, 2022

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305

1

Can you solve?

atan(60)+atan(45)

Guest Feb 22, 2022

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383

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help

For a certain value of k, the system

\begin{align*}
x + y + 3z &= 10, \\
-4x + 3y + 5z &= 7, \\
kx + z &= 3
\end{align*} read more ..

Guest Feb 22, 2022

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374

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Parabola

The graph of y = f(x) is a parabola whose vertex is at (2,-1). The graph of y = f(x + 3) is also a parabola. Where is the vertex of the graph of y = f(x + 3). Write your answer as an ordered pair.

Guest Feb 22, 2022

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292

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Sequences

We have two geometric sequences of positive real numbers:
6,a,b and a,b,1296
Solve for a

Guest Feb 22, 2022

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356

1

HELP PLEASE IM SO SORRY

(a) Let $f : (-\infty,0) \cup (0,\infty) \to \mathbb{R}$ be defined by \[f(x) = x - \frac{1}{x}.\]Show that $f$ has no inverse function.

(b) Let $g : (0,\infty) \to \mathbb{R}$ be defined by \[g(x) = x - \frac{1}{x}.\]Show that $g$ read more ..

Guest Feb 22, 2022

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278

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Exponential Functions

Guest Feb 22, 2022

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217

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Algebra

If m is a real number such that m^2 + 1 = 3m, find the value of the expression below.
(m^5 + 2m^3 - 9m + 27)/(m^2 + 1)

Guest Feb 22, 2022

Feb 21, 2022

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236

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precalc

In triangle XYZ, we have angle X = 120, tan Z = 3. What is cos Z? Answer with an exact number.

Guest Feb 21, 2022

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236

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Rigid Transformation Please Help

1. Translate A by the directed line segment from (0, 0) to (0, 2)
2. Translate A by the directed line segment from (0, 0) to (-4, 0)

Guest Feb 21, 2022

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347

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uniform distribution

joan’s finishing time for the Bolder Boulder 10K race was 1.82 standard deviations faster than the women’s average for her age group. There were 395 women who ran in her age group. Assuming a normal distribution, how many women ran faster than Joan? (Round read more ..

Guest Feb 21, 2022

+24

372

2

+1307

venn diagram

There are twice as many students in the cooking club as in the drama club. Suppose there are a students in the drama club and b students who are members of both clubs. Find an expression for the total number of students who are in the cooking club or the read more ..

dolphinia Feb 21, 2022

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453

2

some help plz

1.let f(x)= 3x+3/x+1. Find the domain of f
2.let q(x)=2/sqrt(x). Find the domain of q
3.let g(x)=3(x-6)^2+1. Find the range of g
4.let f(a,b)= 2a-3b^2+7. If f(k,3)=90, then what is k? read more ..

Guest Feb 21, 2022

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374

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Coordinates

Find the value of a so that the points A(6, 2a) and B(-a, -2) lie on a line having slope 7.

Guest Feb 21, 2022

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372

3

Help pls

If the matrix has an inverse and then find \[\mathbf{A} + 8 \mathbf{A}^{-1}.\]

Guest Feb 21, 2022

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312

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geometry

In the diagram below, we have $\overline{AB}\parallel\overline{DE}$, $AC = 9$, $CE = 6$, and $BD = 24$. Find $CD$.

<read more ..

Guest Feb 21, 2022

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345

2

question for dividing

wich 3 numbered numbers give the rest 5 if divided by 14 and 62

Guest Feb 21, 2022

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376

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system

For a certain value of the system
3a + 4b = 7
6a + 4b = k - 4b + 2a
read more ..

Guest Feb 21, 2022

+1

417

3

+1634

HARD sequence problem help

Question: Seven positive numbers form an arithmetic sequence, and their reciprocals form a geometric sequence. If the third term of the arithmetic sequence is 12, what is the greatest possible value of the seventh term?

I tried read more ..

proyaop Feb 21, 2022

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