All Questions

811

+32

Find the value of x.

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daphix May 7, 2020

571

coordinate geometry

Find the center of the circle passing through the points (0,0), (3,0), and (0,4).

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Guest May 7, 2020

475

help

Let n be chosen at random from 1, 2, 3, ..., 100. What is the probability that the units digit of 3^n is 3?

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Guest May 7, 2020

684

+32

I is the incenter of the triangle.

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daphix May 7, 2020

1295

+96

math

The red parabola shown is the graph of the equation x = ay^2 + by + c. Find c. (Assume that the graph has the standard unit scale.)
read more ..

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daddypig May 7, 2020

593

four-digit number

Find the smallest four-digit number, with different digits, that is divisible by each of its digits.

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Guest May 7, 2020

536

Help for a question I missed that I want to understand

PQRS has vertices P(0,0), Q(4,2), and S(4, -2). Its diagonals intersect at H(4,0). What are the possible coordinate of R for PQRS to be a kite. I want to know why the answer is (10,0)

NewSoul May 7, 2020

620

help

Kara has 162 coins in her collection of nickels, dimes, and quarters, which has a total value of 22 dollars If Kara has twleve fewer nickels than quarters, how many dimes does she have?

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Guest May 7, 2020

1610

What is the vector that results from transforming

What is the vector that results from transforming
→
a by the transformation matrix?
read more ..

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Guest May 7, 2020

May 6, 2020

614

please help

Jar Jar starts jogging at a constant rate of five miles per hour. Half an hour later, Darwin starts running along the same route at seven miles per hour. For how many minutes must Darwin run to catch Jar Jar?

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Guest May 6, 2020

621

circles

A rectangle with height 4 and width w contains three circles as in the diagram, all tangent to the rectangle and to each other. What is w?

read more ..

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Guest May 6, 2020

673

help

The line x + y - 1 = 0 touches the parabola y^2 = kx. Find the value of k.

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Guest May 6, 2020

630

help plss

Fill the blank with a constant, so that the resulting expression can be factored as the product of two linear expressions:
3ab-12a+7b+__

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kookie13 May 6, 2020

566

help

Solve 8^{1/6} + x^{1/3} = 7/(3 - sqrt(2)).

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Guest May 6, 2020

464

Help me please!

A line passes through the points (-3,-5) and (6,1). The equation of this line can be written in the form Ax+By=C , where A, B,and C are integers with greatest common divisor 1, and A is positive. Find A+B+C.

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Guest May 6, 2020

747

+189

When simplified, what is the value of

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SoggyPerson May 6, 2020

635

Help please! Thanks

Simon has built a gazebo, whose shape is a regular heptagon, with a side length of 1 unit. He has also built a walkway around the gazebo, of constant width 1 unit, as shown below. (Every point on the ground that is within 1 unit of the gazebo and outside read more ..

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Guest May 6, 2020

440

help with roots

It is known that x = 1 is a solution to 2x^3 - 3x^2 - 4x + 5 = 0. What are the other two solutions?

Guest May 6, 2020

577

helpp pls

which one has a less moment of inertia?
A) solid sphere
B) hollow sphere
C) ring read more ..

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ssaayyaa May 6, 2020

880

+55

integral of e^1/x / x^2 dx?

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gonaaa May 6, 2020

578

please help

Let a and b be the roots of 2x^2 - x - 2 = 0. Find the value of 1/a + 1/b.

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Guest May 6, 2020

711

3/11 divied by 4/7

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Guest May 6, 2020

1481

+32

In this picture B, D, and F are midpoints. AC = 50, CE = 60, and BD = 35 / AE = [ ? ]

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daphix May 6, 2020

691

(x,y) coordinates for quadratic system of equations

Consider the system of quadratic equations

y = 3x^2 - 5x
y = 2x^2 - x - c

where c is a real number.
(a) For what value(s) of c will the system have exactly one solution
(b) For what value(s) of c read more ..

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ofwvaf May 6, 2020

743

Modular Arithmetic Problem

Find the remainder when 24^50 - 15^50 is divided by 13.

I know that we'd have to simplify 24^50 and 15^50, but it's hard to do. Can anyone help me?

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Guest May 6, 2020

All Questions ⁺⁰238211 Questions

Find the value of x.

coordinate geometry

help

I is the incenter of the triangle.

math

four-digit number

Help for a question I missed that I want to understand

help

What is the vector that results from transforming

please help

circles

help

help plss

help

Help me please!

When simplified, what is the value of

Help please! Thanks

help with roots

helpp pls

integral of e^1/x / x^2 dx?

please help

3/11 divied by 4/7

In this picture B, D, and F are midpoints. AC = 50, CE = 60, and BD = 35 / AE = [ ? ]

(x,y) coordinates for quadratic system of equations

Modular Arithmetic Problem

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