All Questions

354

roots

x^2 + bx + b + 3 = 0 has roots of the form x = (-b +/- sqrt(7))/2, where b > 0. Find b.

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Guest May 13, 2021

-1

479

Fractions (asap)

Caleb is reading a book that is 90 pages long. He read 4/5 of the book on Sunday and 1/2 of the remainder on Tuesday. How many pages did Caleb have left to read?

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jiejxu May 13, 2021

-1

481

Fractions

35 seventh grade students were invited to test two new computer games. 1/5 of the students preferred Galaxy Goo. The others preferred Planet Zak. How many students preferred Galaxy Goo?

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jiejxu May 13, 2021

457

+318

Math Challenge

Eric had 7 times as many markers as Andy. After Eric gave Andy some of his markers, each boy then had 36. How many markers had Eric given to Andy?

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Tgfromthe4 May 13, 2021

508

Math

Jayden has 4 books. He gave 4/11 books to Jim. He gave 2 more books to Reid. How many books did he give to Reid?

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Guest May 13, 2021

363

help ellipse

The equation of an ellipse is x^2+y^2/4=1. The equation of a line is y=3x+b. For what values of b is the line tangent to the ellipse?

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Guest May 13, 2021

378

quadrilateral

In quadrilateral ABCD, A = 75, B = 90, C = 120, AB = BC = 3*sqrt(2). Find CD.

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Guest May 13, 2021

527

Math

Sandy picked 10 more pounds of apple than Kari.Kari picked 10 more pounds of apple than James.if they picked a total of 156 pounds of apple how many pounds of apple did sandy pick.

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Guest May 13, 2021

564

what is the square root of negative 25?

What is the square root of negative 25?

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Guest May 13, 2021

495

math

given a, b, c, d positive real number. abcd=1
prove that

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Guest May 13, 2021

706

math

In a lab experiment, 2400 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 19 hours. How long would it be, to the nearest tenth of an hour, until there are 3300 bacteria present? read more ..

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Guest May 13, 2021

855

please help

Two points A and B are on opposite sides of a building. A surveyor selects a third point C to place a transit. Point C is 52 feet from point A and 67 feet from point B. The angle ACB is 60°. How far apart are points A and B?

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Guest May 13, 2021

514

Need Algebra 2 help

Classify the conic section

a) Hyperbola
read more ..

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Guest May 13, 2021

480

inequality

Enter the letters of the points that satisfy the inequality y > x:

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Guest May 13, 2021

929

There are numbers $A$ and $B$ for which\[\frac A{x-1}+\frac B{x+1}=\frac{x+2}{x^2-1}\]for every number $x\neq\pm1$. Find $B$.

thanks :D

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Guest May 13, 2021

480

Pls help me!!

The planet Pern, home of the dragon riders, is know to have a volume of 6.08 x 10^25 cm3 .Assuming this is true, what is Pern's radius?

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Guest May 13, 2021

486

Pls help!!!!

Consider two celestial bodies that have equal masses and experience a gravitational force of 85.0 N towards one another. If their center are 36.0 mm apart, determine each of their masses.

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Guest May 13, 2021

459

algebra

which of the following expressions is equal to 6-4(x+3)

I've seen the answer already in this forum but can someone guide me step by step please im very bad at math, thank you

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Guest May 13, 2021

509

Physics

A cannon at rest fires a 32.5 kg cannonball forward at 388 m/s. After firing, the cannon recoils at 7.42 m/s. What is the mass of the cannon?

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Guest May 13, 2021

301

geometry

The diagonal of a rectangle and the diagonal of a square have the same length. The diagonal of the rectangle forms a 45 degree angle with one of its sides. R is the ratio of the area of the rectangle to that of the square. Find R^2.

Guest May 13, 2021

345

Help please. Look at the picture.

Guest May 13, 2021

650

Can some help me? I've been stuck for more than a day already.

In which of the following triangles is cos B=0.8

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Guest May 13, 2021

665

+876

extremely hard number theory

Hi. I’ve been stuck on this problem for months already. My friend asked me this question, expecting me to answer but I am stuck on it too. I looked and looked… but there doesn’t seem to be an answer that flows. Any hints as to where to start on this tough read more ..

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MathProblemSolver101 May 13, 2021

450

+84

HELP ME!!

Use a calculator to find all solutions of the equation in rectangular form.
x^2−5−3i=0

The solution set is ___ (Simplify your answer. Express complex numbers in terms of i. Do not round until the final answer. Then round read more ..

ughh.abby May 13, 2021

All Questions ⁺⁰237665 Questions

roots

Fractions (asap)

Fractions

Math Challenge

Math

help ellipse

quadrilateral

Math

what is the square root of negative 25?

math

math

please help

Need Algebra 2 help

inequality

There are numbers $A$ and $B$ for which\[\frac A{x-1}+\frac B{x+1}=\frac{x+2}{x^2-1}\]for every number $x\neq\pm1$. Find $B$.

Pls help me!!

Pls help!!!!

algebra

Physics

geometry

Help please. Look at the picture.

Can some help me? I've been stuck for more than a day already.

extremely hard number theory

HELP ME!!

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