All Questions

259

Quadratic

One root of x^2 + 12x + k = 18x + 3 is twice the other root. Find k.

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Guest Feb 13, 2022

279

for and find y

Guest Feb 13, 2022

234

trig question

For how many values of 0 <= x < 3600 satisfy sin(x) = -0.73?

Guest Feb 13, 2022

404

precalc problem

Find the 3 smallest positive x-intercepts of the graph of
y = cos(12x) + cos(16x) + cos(20x)
and list them in increasing order.

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Guest Feb 13, 2022

404

trig

In triangle ABC, $\angle BCA = \pi/6$, AB = , and AC = 10.
Find the sum of all distinct possible values of BC. If there are no possible values, enter 0.

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Guest Feb 13, 2022

346

geometry problem

In the diagram below, angle PQR = angle PRQ = angle STR = angle TSR, RQ = 8, and SQ = . Find PQ.

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Guest Feb 13, 2022

323

coordinates

A point (3*sqrt(5), d + 6) is 3d units away from the origin. What is the smallest possible value of d?

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Guest Feb 13, 2022

378

What are the 202 (or 218) numbers that fall between 30 & 140

961, 1147, 1271, 1333, 1369, 1457, 1517, 1591, 1643, 1681, 1739, 1763, 1829, 1849, 1891, 1927, 1961, 2021, 2077, 2173, 2183, 2201, 2209, 2257, 2263, 2279, 2419, 2449, 2479, 2491, 2501, 2537, 2573, 2623, 2627, 2701, 2747, 2759, 2773, 2809, 2867, 2881, 2911, read more ..

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Guest Feb 13, 2022

263

Coordinates

A triangular region is enclosed by the lines with equations y = x/2 + 3, y = -2x + 6, and y = 7 . What is the area of the triangular region? Express your answer as a decimal to the nearest hundredth.

Guest Feb 13, 2022

386

+11

HEEEEELP

Given that the point (9,7) is on the graph of y=f(x), there is one point that must be on the graph of $2y=\frac{f(2x)}2+2$. What is the sum of coordinates of that point?

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JadeEmperor Feb 13, 2022

396

help geometry

In the diagram below, EU = 8, UF = 7,GV = 5, VH = 16, and UV= 8. Find XY.

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Guest Feb 13, 2022

Feb 12, 2022

336

Polynomials

Let f(x) be a polynomial such that f(0) = 4,f(1) = -5, and f(2) = 11. Find the remainder when f(x) is divided by x(x - 1)(x - 2).

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Guest Feb 12, 2022

381

Geometry

In the figure, if MR = MK, the measure of arc MK is degrees, and measure of arc MQ is degrees, then what is angle RPK, in degrees?

read more ..

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Guest Feb 12, 2022

349

Geometry

In rectangle ABCD, we have AD = 3 and AB = 4. Let M be the midpoint of AB, and let X be the point such that MD = MX, angle MDX = degrees, and A and X lie on opposite sides of DM. Find angle XCD, in degrees.
read more ..

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Guest Feb 12, 2022

331

Domain question

A function f has domain [0, 2] and range [0, 1]. (The notation [a, b] denotes {x : a ≤ x ≤ b}.) Define the function g as g(x) = 1 + 3f(2x - 7). If [p, q] is the domain of g and [r,s] is the range of g, then determine p + q + r + s.

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Guest Feb 12, 2022

360

Given a list of linearly independent vectors, the Gram-Schmidt process produces a list of orthogonal unit vectors by:

Given a list of linearly independent vectors, the Gram-Schmidt process produces a list of orthogonal unit vectors by:
subtracting from each vector its projections onto all vectors earlier in the list, and
multiplying each vector by a scalar read more ..

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Guest Feb 12, 2022

424

Rate problem

John, Paul and Peter can finish painting the fence in 2 hours. If John does the job alone he can finish it in hours. If Paul does the job alone he can finish it in hours. How long will it take for Peter to finish the job alone?

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Guest Feb 12, 2022

343

Counting question

In how many ways can we seat 8 people around a table if Alice, Bob, and Craig won't sit in three consecutive seats? (Two seatings are the same if one is a rotation of the other.)

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Guest Feb 12, 2022

359

help please!! :):):):):)

The grid below contains the 16 points whose x- and y-coordinates are in the set {0,1,2,3}:

A square with all four of its vertices among these 16 points has area A. What is the sum of all possible values of A? read more ..

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Guest Feb 12, 2022

337

Precalc help please :)

Let x and y be vectors such that and . Compute the ratio .
An explanation please if possible?

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Guest Feb 12, 2022

339

Coordinates

What is the area of the region bounded by the three lines with equations 2x + y = 8, 2x - 5y = 20 and x + y = 12?

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Guest Feb 12, 2022

267

Coordinates

Find the area of the triangle bounded by the y-axis and the lines y - 3x = -2 and 3y + x = .

Guest Feb 12, 2022

264

help with counting

In a three-digit number, the hundreds digit is greater than 7, the tens digit is greater than 2 but less than 6, and the units digit is the smallest prime number. How many three-digit numbers satisfy all of these conditions?

Guest Feb 12, 2022

258

Maximum value

Let x and y be real numbers such that 0 <= x <= 1 and 0 <= y <= 1. Find the maximum value of x^2 - y^2.

Guest Feb 12, 2022

All Questions ⁺⁰238158 Questions

Quadratic

for and find y

trig question

precalc problem

trig

geometry problem

coordinates

What are the 202 (or 218) numbers that fall between 30 & 140

Coordinates

HEEEEELP

help geometry

Polynomials

Geometry

Geometry

Domain question

Given a list of linearly independent vectors, the Gram-Schmidt process produces a list of orthogonal unit vectors by:

Rate problem

Counting question

help please!! :):):):):)

Precalc help please :)

Coordinates

Coordinates

help with counting

Maximum value

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