All Questions

317

equations

Find all pairs of real numbers (a, b) such that (x-a)^2 + (2x-b)^2 = (x-3)^2 + (2x)^2 for all x.

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Guest Feb 15, 2022

239

Number Theory

If a and b are positive integers such that gcd(a,b)=210, lcm[a,b]=210^4, and a < b, how many possible values are there for a?

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Guest Feb 15, 2022

190

Graphing Functions

If points (a,b) are on the graph of y = f(x), what points must be on the graph of y = -3f(3x+6)-2?

Guest Feb 15, 2022

225

Counting

How many positive integers less than 1000 have at least one digit of 8 and at least one digit of 5?

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Guest Feb 15, 2022

309

Cos

If cosθ=0.111, find θ, writing your answer to the nearest degree.

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Guest Feb 15, 2022

228

Counting question

In how many ways can 45 cents be made using any combination of quarters, dimes, nickels, and pennies?

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Guest Feb 15, 2022

270

Algebra

Suppose that a, b, and c are real numbers such that a/b = sqrt(10)/sqrt(21) and b/c = sqrt(14)/sqrt(15). Find a/c. Completely simplify and rationalize the denominator.

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Guest Feb 15, 2022

295

How many square feet of plastic

Cory is lining the top of a table with clear plastic. The table has a circumference of 4.71 feet. How many square feet of plastic will he need to cover the tabletop? Use 3.14 for π and round to the nearest tenth.

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Guest Feb 15, 2022

281

Polynomial

f(x) is a monic polynomial such that f(0)=4 and f(1)=-10. If f(x) has degree 2, what is f(x)? Express your answer in the form ax^2+bx+c, where a, b, and are real numbers.

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Guest Feb 15, 2022

319

Algebra

For a real number x, find the number of different possible values of x^2 - abs(x)^2.

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Guest Feb 15, 2022

335

Ed drew a scale drawing of a neighborhood park. The scale of the drawing was 9 millimeters = 1 meter. What is the drawing's scale factor? S

Ed drew a scale drawing of a neighborhood park. The scale of the drawing was 9 millimeters = 1 meter. What is the drawing's scale factor? Simplify your answer and write it as a fraction.

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Guest Feb 15, 2022

309

Exponents

What is the value of b if 5^b + 5^b + 5^b + 5^b + 5^b = 25^(b - 1).

proyaop ●

Guest Feb 15, 2022

302

Help

A trapezoid has an area of 59.2 square kilometers. One base is 9.8 kilometers long. The height measures 8 kilometers. What is the length of the other base?

BuilderBoi ●

Guest Feb 15, 2022

278

Coefficient

Find the constant term in the expansion of ( x^2 + 7/x )^4.

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Guest Feb 15, 2022

278

Algebra

A triangle..ABC. Angle A is 10x-22 angle B is 4x angle C is 4x+10. The questions are looking for What X=, for what angle ABC=, for what angle ACB=, and for what angle CAB=.

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BreadRoll1 Feb 15, 2022

320

+13

Find x such that sin2x=sinx & 0<=x<=2pi.

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KLamp Feb 15, 2022

221

Counting points

A lattice point is a point whose coordinates are both integers. How many lattice points are on the boundary or inside the region bounded by the x-axis, the line x=4 and the curve y=2\sqrt{x} + 3x?

Guest Feb 15, 2022

311

Probability problem

Meyer rolls two fair, ordinary dice with the numbers 1, 2, 3, 4, 5, 6 on their sides. What is the probability that both of the dice shows a square number?

BuilderBoi ●

Guest Feb 15, 2022

286

Question on numbers

There are two number A and B. A is a 2-digit number which is a multiple of 8. B is a 2-digit number which is a multiple of 24. What is the largest possible difference between the two numbers A and B?

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Guest Feb 15, 2022

290

Function

Let
f(x) = 2x + 7 if x < -2
f(x) = -x^2 - x + 2 if x >= -2
read more ..

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Guest Feb 15, 2022

304

Geometry

If altitude CD is centimeters, what is BD?

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Guest Feb 15, 2022

324

Counting problem

An ant is walking on a hexagon. At each step, he moves from the vertex on which he is standing to an adjacent vertex. After steps, what is the probability that he is standing on the same vertex on which he began?

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Guest Feb 15, 2022

289

geometry

Point Y is on a circle and point P lies outside the circle such that PY is tangent to the circle. Point A is on the circle such that segment PA meets the circle again at point B. If PA = 15 and PY = , then what is AB?
read more ..

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Guest Feb 15, 2022

290

help coordinates

A triangle is formed with edges along the line y = 2/3*x + 5, the x-axis, and the line x = k. If the area of the triangle is less than 50, find the sum of all possible integral values of k.

BuilderBoi ●

Guest Feb 15, 2022

-1

297

Geometry

The sides of triangle CAB are in the ratio of . Segment AD is the angle bisector drawn to the shortest side, dividing it into segments BD and DC. What is the length, in inches, of the longer subsegment of side BC if the length of side read more ..

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Guest Feb 15, 2022

All Questions ⁺⁰235546 Questions

equations

Number Theory

Graphing Functions

Counting

Cos

Counting question

Algebra

How many square feet of plastic

Polynomial

Algebra

Ed drew a scale drawing of a neighborhood park. The scale of the drawing was 9 millimeters = 1 meter. What is the drawing's scale factor? S

Exponents

Help

Coefficient

Algebra

Find x such that sin2x=sinx & 0<=x<=2pi.

Counting points

Probability problem

Question on numbers

Function

Geometry

Counting problem

geometry

help coordinates

Geometry

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