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394

Function

Let
f(x) = 3x^2 + 2 if x <= 3
f(x) = ax^2 + 2 if x > 3
Find a if the graph of y = f(x) is continuous (which means the graph can be drawn without lifting your pencil from the paper). read more ..

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Guest Jun 16, 2022

284

need help

let f(x)=3x+2 and g(x)=ax+b, for some constants a and b. If ab=50, and f(g(x))=g(f(x)), for x=0,1,2...9, find the sum of all possible values of a.

Guest Jun 16, 2022

423

quadratic

The roots of 7x^2 + x - 5 = 0 are a and b. Compute (a - 4) + (b - 4).

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Guest Jun 16, 2022

374

Function

Suppose that f(x) and g(x) are functions on R such that the range of f is [-5,3], and the range of g is [-2,1]. The range of f(x) + g(x) is [a,b]. What is the largest possible value of b?

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Guest Jun 16, 2022

318

Help

What is the remainder when the number below is divided by 11?
1 × 10^1 + 2 × 10^2 + 3 × 10^3 + . . . + 2015 × 10^2015

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Guest Jun 16, 2022

665

Consider the quadratic expression $13x^2 + nx - 17.$ For certain values of $n,$ it may be factored into a product of two linear polynomials,

Consider the quadratic expression $13x^2 + nx - 17.$ For certain values of $n,$ it may be factored into a product of two linear polynomials, both of which have integer coefficients. What are all such values of $n?$

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Guest Jun 16, 2022

404

+349

Help calculus

There is the parabola $x^2.$ what is the area under the curve between 0 and 3?

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hipie Jun 16, 2022

386

liberal

3(95-6x)=x-152

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Guest Jun 16, 2022

275

There are 30 marbles in a jar.

There are 30 marbles in a jar. 4 are red, 3 are purple, 9 are black, 6 are white, 8 are brown. What is the probability of picking all the red marbles in a row and black and purple when they are randomly mixed up? After that, what is the probabiliy of putting read more ..

Guest Jun 16, 2022

349

Please Help! Linear Velocity question.

A Ferris wheel completes 7 revolutions in 14 minutes. The radius of the Ferris Wheel is 30 feet.
What is the linear velocity of the Ferris Wheel in inches per second?
Enter your answer rounded to the nearest tenth.

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Matterval Jun 16, 2022

384

Geometry Question

The tangent to the circumcircle of triangle WXY at X is drawn, and the line through W that is parallel to this tangent intersects XY at Z If XY=14 and WX=6 find YZ.

read more ..

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Guest Jun 16, 2022

375

+349

I just want to recap

$\mathrm{Four \ positive \ integers \ A, \ B, \ C \ and \ D \ have \ a \ sum \ of \ 36. \ If} \ A+2 \ = \ B-2 \ = \ C+2 \ = \ D+2, \mathrm{what \ is \ the \ value \ of \ the \ product \ ABCD?}$

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hipie Jun 16, 2022

327

hard counting

Alice, Andrew, and six other students are to be divided into two teams of four people. How many ways are there to form the teams so that Alice and Andrew are on the same team?

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Guest Jun 16, 2022

368

Interval notation

Express this collection of points on the number line using interval notation.

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Guest Jun 16, 2022

349

help number theory

Suppose that x, y, z are positive integers satisfying x <= y <= z, and such that the product of all three numbers is twice their sum plus 2. What is the sum of all possible values of z?

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Guest Jun 16, 2022

320

Pls help me :D

Find a linear inequality with the following solution set. Each grid line represents one unit.
(Give your answer in the form or where and are read more ..

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Guest Jun 16, 2022

Jun 15, 2022

362

Help

Terry, Carl and Dave bought a present for their friend. Terry paid 1/3 of the total amount paid by Carl and Dave. Carl paid 2/5 of the amount paid by Terry and Dave. If Terry paid $24 less than Dave for the present, find the cost of the present.
read more ..

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Guest Jun 15, 2022

338

Trapezoid

In trapezoid PQRS, Base PQ is parallel to base RS. Let point X be the intersection of diagonals PR and QS. The area of triangle PQX is 20 and the area of triangle RSX is 48. Find the area of trapezoid PQRS

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Guest Jun 15, 2022

393

geometry

.....

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Guest Jun 15, 2022

374

Math

Greg has 7 times as many bookmarks as Sean. If Greg gives 15 bookmarks to Sean, the two children will have exactly the same amount. How many bookmarks do they have altogether?

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Guest Jun 15, 2022

393

System

find the value of k for which the system of equations has a unique solution 2x+ky-9=0 , kx+3y-13=0.

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Guest Jun 15, 2022

353

Polynomial

Let f(x) be the polynomial f(x) = x^7 - 3x^3 + 2.

If g(x) = f(x+7), what is the sum of the coefficients of g(x)?

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Guest Jun 15, 2022

354

Triangle

One side of a triangle is one-third the longest side. The third side is 13 feet less than the longest side. The perimeter is 85. Find all three sides.

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Guest Jun 15, 2022

334

geometry help needed

In triangle ABC, point D divides side AC so that AD : DC = 1 : 2. Let E be the midpoint of BD and let F be the point of intersection of line BC and line AE. Given that the area of ΔABC is 360 cm2, what is the area of ΔAED?
read more ..

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Guest Jun 15, 2022

All Questions ⁺⁰238459 Questions

Function

need help

quadratic

Function

Help

Consider the quadratic expression $13x^2 + nx - 17.$ For certain values of $n,$ it may be factored into a product of two linear polynomials,

Help calculus

liberal

There are 30 marbles in a jar.

Please Help! Linear Velocity question.

Geometry Question

I just want to recap

hard counting

Interval notation

help number theory

Pls help me :D

Help

Trapezoid

geometry

Math

System

Polynomial

Triangle

geometry help needed

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