All Questions ⁺⁰237771 Questions

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hi this is my fist quetstion

off-topic

AKILISCOOL Jun 12, 2022

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202

0

Counting

Suppose that I have 6 different books, 2 of which are math books. In how many ways can I stack my 6 books on a shelf if I do not want the math books to be at the ends?

Guest Jun 12, 2022

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316

1

+70

Helpp

A regular hexagon ABCDEF has area 36 units squared. What is the area of triangle ACE? Thanks in advance

Hamburger Jun 12, 2022

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220

0

geometry

In the diagram, triangle BDF and triangle ECF have the same area. If DB = 2, BA = 4, and AE = 3 find the length of EC.

read more ..

Guest Jun 12, 2022

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208

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help geometry

In the diagram below, AM = BM = CM and angle BMC + angle A = Find angle B in degrees.

Guest Jun 12, 2022

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229

0

Operations

The operation * is defined for non-zero a and b as follows: a * b = 1/(a + b). If a+b = 13 and ab = 25, what is the value of a*b? Express your answer as a common fraction.

Guest Jun 12, 2022

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294

1

Inverse function

If f(x)=5x-12, find a value for $x$ so that $f^{-1}(x)=f(x-1)$.

Guest Jun 12, 2022

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258

1

In the diagram below, we have XY = 2AX = 2YB and AZ/ZC = 2/3. Find YBC/ZYC

In the diagram below, we have XY = 2*AX = 2*YB and AZ/ZC = 2/3. Find YBC/ZYC
https://latex.artofproblemsolving.com/9/0/1/901c2178a93ad9ee51db585a1f7a33688c3118a0.png

Guest Jun 12, 2022

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268

0

+349

help

$\int_1^2 \frac{x-3}{x+3} \lim_{x \rightarrow \infty} \frac{a^2}{3a} \lfloor{3.5}\rfloor * \lceil{2.9}\rceil \oint \pi$

hipie Jun 12, 2022

+1

308

2

Algebra

If 18*sqrt(8) - 8*sqrt(2) = sqrt(n), what is n?

Guest Jun 12, 2022

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220

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geometry

In rectangle ABCD, shown here, CE is perpendicular to BD . If BC = sqrt(3) and DC = 2, what is CE?

Guest Jun 12, 2022

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209

0

geometry

In triangle ABC, point D divides side AC so that AD : DC = 1 : 2. Let E be the midpoint of BD and let F be the point of intersection of line BC and line AE. Given that the area of ΔABC is 360 cm2, what is the area of ΔEBF?
read more ..

Guest Jun 12, 2022

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342

1

Find an ordered pair, x y that is a solution to the equation 6x-y =5

Find an ordered pair, x y that is a solution to the equation 6x-y =5

Guest Jun 12, 2022

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196

0

Function

Let
f(x) = x+ 3 if x > 3
f(x) = x - 6 if -3 <= x <= 3
f(x) = 3x + b if x < -3. read more ..

Guest Jun 12, 2022

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291

3

Complex numbers

Let $a$ and $b$ be nonzero real numbers such that $$(2-7i)(a+bi)$$
is pure imaginary. Find $a/b.$

Guest Jun 12, 2022

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277

1

Help

NN Store imported Notie mobile phones and Dricsin mobile phones in the ratio 8:5. After selling 120 Notie mobile phones and 135 Dricsin mobile phones, the ratio of Notie mobile phones and Dricsin mobile phones left was 8:3. How many Notie mobile phones read more ..

Guest Jun 12, 2022

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262

1

help algebra

Find the ordered pair (s, t) that satisfies the system
s/2 - 3t= -1
3t + 2s= 3

Guest Jun 12, 2022

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283

1

System

Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 + y^2 = 56 + 2xy.

Guest Jun 12, 2022

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294

1

counting

How many license plates consist of 3 letters, followed by 2 even digits, followed by 2 letters?

Guest Jun 12, 2022

Jun 11, 2022

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297

1

geometry

A square tile, a regular hexagon tile, an equilateral triangle tile, and a regular n-sided polygon tile share a common vertex. There are no gaps or overlaps between the tiles. What is n?

Guest Jun 11, 2022

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312

1

quadratic

Suppose that a bottle rocket is launched upward with a initial velocity of 96ft/sec from a height of 880ft. Its height is h, in feet, after t seconds is given by h(t)=-16^2 + 96t + 880. After how long will the rocket reach the ground?

Guest Jun 11, 2022

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321

1

Whole numbers

How many whole numbers lie in the interval between 5/3 and 2*pi + 4*sqrt(7)?

Guest Jun 11, 2022

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296

1

Equation

Find the value of n that satisfies $2(n+1)!+6n!=10$, where $n! = n\cdot (n-1)\cdot (n-2) \cdots 2\cdot 1$.

Guest Jun 11, 2022

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301

1

Parabola

Find the vertex of the graph of the equation x - y^2 + 8y = 13 - 6y + y^2.

Guest Jun 11, 2022

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