All Questions ⁺⁰237680 Questions

0

409

1

trig

In right triangle ABC with B = 90 , we have 2 sin A = 5 cos A. What is tan A?

Guest Jul 27, 2021

0

436

6

+11

Help

Let p = (a,b) be the point of intersection of the line y = 2x-10 and the line through (7,8) and (9,0) Compute a+b.

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Arshy012 Jul 27, 2021

0

314

0

trig

In triangle PQR, we have angle P = 90, QR = 15, and tan R = 6 cos Q. What is PQ?

Guest Jul 27, 2021

0

421

0

+80

help pls

jleung Jul 27, 2021

0

400

0

+80

help pls

jleung Jul 27, 2021

0

263

0

Domain

What is the domain of the function
j(x) = 1/(x + 8) + 1/(x^3 + 8) + 1/(x^5 + 8)?
Express your answer as a union of intervals.

Guest Jul 27, 2021

-2

302

0

'The Question Hub'

Ask you math questions and general questions overall!
Ask all you can and CPhill and the others will answer!
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Guest Jul 27, 2021

0

501

4

'simple' math problem I can't figure out... @CPhill, @Melody, @ElectricPavlov, @Guest

If I have 100 durians (which are really smelly btw), and you take away 15, how many do you have?

Please explain, I don't understand.

Guest Jul 27, 2021

0

357

2

help geometry

If the radius of a circle is 5 cm and the angles of the arc is 110 degrees, what is the length of the arc subtendong that angle of 110 degrees?

Guest Jul 27, 2021

0

483

4

HALP ANSWER NEEDED NOW!!

Find the ordered triple $(p,q,r)$ that satisfies the following system: \begin{align*} p-2q&=0\\ q-2r&=0\\ p+r&=5. \end{align*}

Guest Jul 27, 2021

0

287

0

coordinates

Find the area of the region satisfying the inequality x^2 + y^2 <= 4x + 6y+13 + 2x - 2y.

Guest Jul 27, 2021

0

293

0

help plz

If x >= 0 and y >= 0, how many lattice points does the line y = -3x + 36 pass through?

Guest Jul 27, 2021

0

287

0

Coordinates

Find the area of the region satisfying the inequality x^2 + y^2 <= 4x + 6y+13 - 2x + 3y + 9.

Guest Jul 27, 2021

0

516

1

+58

A problem I am very stuck on and need help!

Non-negative real numbers $a, b$ and $c$ satisfy $$a^2+b^2+c^2+70=35ab+7ac+5bc.$$
The least possible value of $a^2+2b^2+3c^2$ can be expressed as $\frac{m}{n}$ where $m$ and $n$ are relatively prime positive integers. FInd $m+n$
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hellothere Jul 27, 2021

0

449

1

geometry

In one plane, there are four circles, each with radii 3, 1, 7, and 5 respectively. They are all tangent to line m at the same point, point A. What's the maximum area that could be between the four circles.

Guest Jul 27, 2021

0

281

0

help coordinate

Find the radius of the circle with equation 9x^2-18x+9y^2+36y+44=20x - 4y.

Guest Jul 27, 2021

0

275

0

help algebra

The radical sqrt(85 + sqrt(2736)) can be expressed as √a + √b, where a < b. What is the product of ab?

Guest Jul 27, 2021

0

434

1

help please

The first time Ferguson completed a drill on the decimals he took 56.04 s to get them all correct. He repeated the process over and over again until his best time was 38.48 s. How many seconds faster was his best time than his first attempt?

Guest Jul 27, 2021

Jul 26, 2021

0

265

1

Probability

A cube 4 units on each side is composed of 64 unit cubes. Two faces of the larger cube that share an edge are painted blue, and the cube is disassembled into 64 unit cubes. Two of the unit cubes are selected uniformly at random. What is the probability read more ..

Guest Jul 26, 2021

0

400

2

help algebra

Fill in the blank with a constant, so that the resulting quadratic is the square of a binomial. x^2 + 4x + 5x + ___

Guest Jul 26, 2021

0

394

0

+58

Please help!!!

View question - A question that I am stuck on and really need help. (0calc.com)

This is the link to the question

hellothere Jul 26, 2021

0

434

1

Coordinates

Two sides of a square are consecutively based upon two straight lines $6\times x - 8\times y + 5 = 0$ and $3\times x - 4 \times y + 15 = 0$. Find the area of this square.

Guest Jul 26, 2021

0

506

1

+24

What are a1 a2 b1 and b2?

Consider a particle following the parametric equations
Say that at time t=0, this particle is at and at time , this particle read more ..

Trainer Jul 26, 2021

0

396

1

help algebra

Pure acid is to be added to a 10% acid solution to obtain 90L of 58% solution. What amounts of each should be used? How many of 100% pure acid should be used to make the solution?

Guest Jul 26, 2021

0

494

1

+179

Question [any help would be appreciated]

Compute

$\sum^{2020}_{n=1} [\frac{1}{n^2} - \frac{1}{(n+1)^2}] $

xCorrosive Jul 26, 2021

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