All Questions

281

system

For which value(s) of k does the following system have no solution?

4x - 6y = -2
kx - 9y = 3 read more ..

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Guest Oct 10, 2022

253

rounding

what is 38.426 rounded to the nearest hundreadth

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Guest Oct 10, 2022

291

Help!!

Find the constant term in the expansion of \[\Big(2z - \frac{1}{\sqrt{z}}\Big)^9.\]

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Guest Oct 10, 2022

314

+1634

Trig question help plz

If is an angle such that , then evaluate .
Thanks guys!

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proyaop Oct 10, 2022

263

Unit Test, Part 2: Sequences and Series

The number of visitors to a website in the first week is 443. The number of visitors each week is quadruple the number of visitors the previous week. What is the total number of visitors to the website in the first 7 weeks? Show the formula with correct read more ..

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Guest Oct 10, 2022

257

4.08 Graded Assignment: Sequences and Series - Part 2

A supermarket display consists of boxes of cereal. The bottom row has 73 boxes. Each row has eight fewer boxes than the row below it. The display has seven rows.
Write and use a function to determine how many boxes are in the top row. Show your work.
Use read more ..

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Guest Oct 10, 2022

229

counting question

How many numbers can you get by multiplying two or more distinct members of the set {1, 2, 3, 4, 5, 11, 12, 13, 14, 15} together?

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Guest Oct 10, 2022

236

palindromes

Find all four-digit palindromes that are divisible by 13.

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Guest Oct 10, 2022

184

help algebra

Solve for y if 9*y = 3*6*27*4/(81*2)

Guest Oct 10, 2022

196

graphing

Below is a portion of the graph of a function, y=h(x):
If the graph of y=h(x-3) is drawn on the same set of axes as the graph above, then the two graphs intersect at one point. What is that point?
Enter your answer as an ordered pair.
read more ..

Guest Oct 10, 2022

Oct 9, 2022

196

linear system

The real numbers x, y and z satisfy the equations x + 2y + 3z = 950 and 3x + y = 1450 and 2y + z = 1880. What is the average of x, y and z

Guest Oct 9, 2022

192

help with quadratic

One of the five quadratics below has a repeated root. (The other four have distinct roots.) What is the repeated root?

-x^2 + 18x + 81
3x^2 - 6x + 9 read more ..

Guest Oct 9, 2022

265

help

Let . Then there exist unique real numbers p, q, and r such that Find .p+q+r

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Guest Oct 9, 2022

230

Peachy Numbers - Help Please!

We call a number peachy if every digit in the number is either a or next to a For example, the numbers 333, 83 and 303 are all peachy, but the numbers 32223, 786, 340 and 3990 are not peachy.
How read more ..

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Guest Oct 9, 2022

194

Calculus question

Could someone please help me with this?

If y = f(t2) and f'(t) = sqrt( 2 - cos(t) ) ---> What is dy/dx ?

Guest Oct 9, 2022

297

+275

Probability

A bag contains five red marbles and two blue marbles.
Quinn draws two marbles at random from the bag without replacement. Afterwards, they put any blue marbles they drew back into the bag, and then redraws marbles until they once again have two marbles. read more ..

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Jasonkiln Oct 9, 2022

234

radicals

Simplify sqrt(3*324000).

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Guest Oct 9, 2022

255

digit question

What is the smallest number larger than 3456 who's digits add up to 21.

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Guest Oct 9, 2022

178

Function

If f(x) is a function whose domain is [-25,5] and g(x) = f(x^2), then the domain of g(x) is an interval of what width?

Guest Oct 9, 2022

192

Inequality

For how many integers x do we have 1/4 < x/5 < 13/2?

Guest Oct 9, 2022

190

quadratic

Let a and b be the roots of the quadratic 2x^2 - 8x + 7 = x^2 - 5x + 3. Compute a^3*b + a*b^3.

Guest Oct 9, 2022

292

+218

Geometry Problem!

Hello!
I recently asked a question, and got an answer, but an answre nonethe less. Can someone respond to my question with a solution back on the origin thread?

Original Thread: https://web2.0calc.com/questions/find-c-in-the-following-diagram read more ..

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MathyGoo13 Oct 9, 2022

188

complex numbers

Let z and w be complex numbers such that |z| = 1, |w| = 7, and |5z + w| = 11. Find |3z + 4w|.

Guest Oct 9, 2022

240

algebra 2

a, b, and c are constants such that the quadratic ax^2 + bx + c can be expressed in the form 2(x-4)^2 + 8. When the quadratic 3ax^2 + 3bx + 3c(for the same values of a, b, and c) is expressed in the form n(x-h)^2 + k, what is h?

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Guest Oct 9, 2022

202

Function

Find the smallest integer x where the expression sqrt (x+8)/(x^2+x+16) is defined.

Guest Oct 9, 2022

All Questions ⁺⁰237827 Questions

system

rounding

Help!!

Trig question help plz

Unit Test, Part 2: Sequences and Series

4.08 Graded Assignment: Sequences and Series - Part 2

counting question

palindromes

help algebra

graphing

linear system

help with quadratic

help

Peachy Numbers - Help Please!

Calculus question

Probability

radicals

digit question

Function

Inequality

quadratic

Geometry Problem!

complex numbers

algebra 2

Function

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