All Questions

364

HELP ASAP!!!

Find all solutions to the equation $(x - 1)^2 = -4$.

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Guest Jan 11, 2021

Jan 10, 2021

499

Please help

The number $16$ has four fourth roots. In other words, there are four complex numbers that can be entered in the square in the equation below: [blank]^4 = 16. Find them.

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Guest Jan 10, 2021

496

+328

The donut machines

The donut machine churns out 1 donut every 8 seconds. If there are 6 identical donut machines working at the same time, what is the speed of donut making in terms ofboxes per hour, where each box contains a dozen donuts?

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Potatobird Jan 10, 2021

480

complex numbers

For complex numbers z, let
f(z) = z^2 if z is real
f(z) = z + 2 if z is not real
read more ..

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Guest Jan 10, 2021

404

+328

Coach Morris's trophies

Coach Morris of the Math Club bought trophies for the year-end award. She received the trophies either as boxes of 4 gold trophies each, or boxes boxes of 5 smaller “Honorable Mention” trophies each. Coach Morris need 2 gold trophies for every 3 silver read more ..

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Potatobird Jan 10, 2021

463

+296

Am I right?

did i pick all the soultions? kinda unsure if pi/ 2 is a solution too

lovesosa12 Jan 10, 2021

420

+328

The exotic animal cards trade

Trading of home-made Exotic Animal Playing Cards, has recently become popular at school. The more exotic an animal, the more valuable the card is. The trading is done in kind, meaning no money is involved! Currently, three Axolotl cards can read more ..

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Potatobird Jan 10, 2021

433

+328

The hoses and the swimming pool

The swimming pool can be filled in 40 hours using the medium hose. With the large hose, it will take 30 hours instead. If we use both hoses (without any impact on waterflow rate), how long does it take to fill the pool? Round your answer to the nearest read more ..

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Potatobird Jan 10, 2021

-1

621

+1443

I'm confused, aren't b and c correct? I can only choose one. Thanks!

Why does y^0 = 1?

a) Because y1 multiplied by y = 1
read more ..

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SmartMathMan Jan 10, 2021

443

+296

What are the solutions to the equation on [0,2π)?

csc(3x)=−2√ 3/ 3

edit
im pretty sure its 5pi/9 and 10pi/9 and 2pi/9..... am I right? read more ..

lovesosa12 Jan 10, 2021

336

inverse function

Let f(x) be defined by
f(x) = 3 - x if x <= 3
f(x) = -x^3 + 2x^2 + 3x if x > 3
Calculate $f^{-1}(4) + f^{-1}(10)$ read more ..

Guest Jan 10, 2021

555

+296

Solve the equation on the interval [0,2π).

−5cos x=4
Select all correct solutions;
approximately 0.644
approximately 2.498 read more ..

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lovesosa12 Jan 10, 2021

313

inverse

Let
f(x) = k(x) if x > 0
f(x) = -1/(2x) - x if x < 0
f(x) = 0 if x = 0 read more ..

Guest Jan 10, 2021

366

piecewise function

Let
f(x) = 4x + 1 if x <=3
f(x) = 18 - 4x if x > 3
Find the sum of all values of x such that f(x) = 0. read more ..

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Guest Jan 10, 2021

518

help pls

(a) compute .

(b) The number is an integer. How many digits does it have?
read more ..

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Guest Jan 10, 2021

335

piecewise function

Let
f(x) = ax + 3 if x > 0
f(x) = ab if x = 0
f(x) = bx + c if x < 0 read more ..

Guest Jan 10, 2021

1024

+296

What is the general solution to the equation?

tanθ=2cosθtanθ

I think it might be
read more ..

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lovesosa12 Jan 10, 2021

353

complex numbers

For z = -3 + 5i and w = -2 - 8i, evalute $z \overline{w} + w \overline{z}$.

Note: $\overline{z}$ denotes the conjugate of $z$.

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Guest Jan 10, 2021

351

complex numbers

For all complex numbers z, let
f(z) = z^2 if z is not real
f(z) = z^3 if z is real
Find f(f(f(f(1+i)))). read more ..

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Guest Jan 10, 2021

383

help please!

For , evaluate

Note: denotes the conjugate of
read more ..

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Guest Jan 10, 2021

394

Help PLZ!

Find all values of which satisfy x>4
which satisfy \[\sqrt{x - 4 \sqrt{x - 4}} + 2 = \sqrt{x + 4 \sqrt{x - 4}} - 2.\]

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Guest Jan 10, 2021

350

functions

(a) Let f : R -> R be defined by f(x) = x^2. Show that f(x) has no inverse function.
(b) Let g : (0,inf) -> R be defined by g(x) = x^2. Show that g(x) has an inverse function.

Guest Jan 10, 2021

488

complex roots

The equation
has exactly two complex roots. Find all possible complex values for Enter all the possible values, separated by commas.

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Guest Jan 10, 2021

340

system

For a certain value of k, the system

x + y + 3z = 10
-4x + 8y + 5z = 7 read more ..

Guest Jan 10, 2021

All Questions ⁺⁰237641 Questions

HELP ASAP!!!

Please help

The donut machines

complex numbers

Coach Morris's trophies

Am I right?

The exotic animal cards trade

The hoses and the swimming pool

I'm confused, aren't b and c correct? I can only choose one. Thanks!

What are the solutions to the equation on [0,2π)?

inverse function

Solve the equation on the interval [0,2π).

inverse

piecewise function

help pls

piecewise function

What is the general solution to the equation?

complex numbers

complex numbers

help please!

Help PLZ!

functions

complex roots

system

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