All Questions

507

algebra

Find all real numbers x such that

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Guest May 14, 2020

617

pls help

Find the sum of the x values which solve the system of equations below.
3y-49=0
x^2+Y^2-281=0

thank you read more ..

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Guest May 14, 2020

484

quadratic

The roots of x^2 + ax + b = 0 are a and b. Find all possible pairs (a,b).

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Guest May 14, 2020

919

please help

Mr. Smith was driving 50 mph for the first two hours of his trip, then 60 mph for the remaining three hours. What was the average speed for the whole trip?

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Guest May 14, 2020

499

help

How many positive integers less than 1000 have the sum of their digits equal to 6?

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Guest May 14, 2020

540

+280

P and q are complex numbers such that |p| = 2/5x + 2, |q| = −3/4x − 1 , and |p+q| = 2x + 4 .

P and q are complex numbers such that |p| = 2/5x + 2, |q| = −3/4x − 1 , and |p+q| = 2x + 4 .
On what interval must x fall?
a) [-2, -4/3]
b) (-∞, -4/3]
c) [-2, ∞)
d) [-4/3, -60/47]

read more ..

auxiarc May 14, 2020

1070

+44

Find solutions to system of equations.

Find the solutions and explain the solution:
a+b=14
a^3+b^3=812

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qwerasdfzxcv1 May 14, 2020

789

+1005

Exponent review problem

Here is a question I did when learning algebra thorugh the AoPS Intro to Algebra TEXTBOOK

Don't worry, this is from the textbook I'm self-learning and I've solved it.
read more ..

off-topic

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hugomimihu May 14, 2020

558

hard geometry

In triangle ABC, D is the midpoint of BC. If angle ADB = 45 degrees and angle ACD = 30 degrees, what is angle BAD?

read more ..

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Guest May 14, 2020

578

+256

Help With Permutation Problems(Super Easy)

On a shelf we need to arrange 2 books in
English, 4 books in German, and 3 books in
Bulgarian. Find how many ways we can
arrange them on a shelf in the library so that all
the books in the same language are:
A)Next to Eachother
B)Not read more ..

BWStar May 14, 2020

497

geometry

The side of a square is a. Find the length of a side of a regular octagon obtained from the square by cutting off its corners.

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Guest May 14, 2020

May 13, 2020

-5

670

+318

Pre Calc Final

Find all solutions of the equation in the interval [0 degrees, 360 degrees). Round your answers to the nearest tenth of a degree.

cos 0=.8
read more ..

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mharrigan920 May 13, 2020

-2

562

help

Two vertices of a regular pentagon, in red, intersect with two vertices of a regular hexagon, in blue. What is the measure of the yellow angle?

read more ..

geno3141 ●

Guest May 13, 2020

572

+83

help plzzz

plz help me on A and B plz, I appreciate u and your help! tysm!

hugomimihu ●●●●●●●●

fatimahalnabulsi55 May 13, 2020

906

Algebra Help

We choose a positive divisor of 20^20 at random (with all divisors equally likely to be chosen). What is the probability that we chose a multiple of 10^10?

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Guest May 13, 2020

566

Off Topic

Please do not post homework or ongoing contest work.

off-topic

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Guest May 13, 2020

651

+287

Math

Help

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Mathisgood May 13, 2020

491

can anyone help?

Three unit squares are joined side by side to form a 3 by 1 rectangle, and two diagonals are joined as shown above. Find the acute angle formed by the diagonals.

read more ..

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Guest May 13, 2020

520

polynomial

Solve (x - 3)(x + 1)(x - 4)(x + 2) = -6.

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Guest May 13, 2020

509

HELP WITH HOMEOWORK I AM STUCK.

The ratio of two numbers is 3:5. When 4 is subtracted from the lesser of the two numbers and 8 is added to the larger of the two, the new ratio is 2:7. What is the greater of the two numbers before 8 is added to it?

I read more ..

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Guest May 13, 2020

581

+287

Geno Please help

Thanks in advance!

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Mathisgood May 13, 2020

420

please help

How many different finite sequences (of one or more terms) of consecutive positive integers have a sum of 105?

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Guest May 13, 2020

939

help

When (x + y)^(11) is expanded, what is the sum of the coefficients?

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Guest May 13, 2020

659

+287

Please Help Urgent (Math)

Please help!

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Mathisgood May 13, 2020

All Questions ⁺⁰237795 Questions

algebra

pls help

quadratic

please help

help

P and q are complex numbers such that |p| = 2/5x + 2, |q| = −3/4x − 1 , and |p+q| = 2x + 4 .

Find solutions to system of equations.

Exponent review problem

hard geometry

Help With Permutation Problems(Super Easy)

geometry

Pre Calc Final

help

help plzzz

Algebra Help

Off Topic

Math

can anyone help?

polynomial

HELP WITH HOMEOWORK I AM STUCK.

Geno Please help

please help

help

Please Help Urgent (Math)

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