All Questions ⁺⁰237665 Questions

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276

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Geometry

What is the radius of the circle inscribed in triangle ABC if AB = 15, AC = 41, and BC = 27?

Guest Aug 30, 2021

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385

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help

What is the greatest possible value of the expression in simplified form when an operation symbol ( ) is placed in each square? You may repeat or use different symbols for each square.

Guest Aug 30, 2021

-1

330

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88 x 99=???

Guest Aug 30, 2021

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327

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help with interest

Lily is going to invest in an account paying an interest rate of 5.6% compounded continuously. How much would Lily need to invest, to the nearest cent, for the value of the account to reach $78,000 in 9 years?

Guest Aug 30, 2021

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273

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Coordinates

Find the value of B - A if the graph of Ax + By = 3 passes through the point (-7,2), and is parallel to the graph of x + 8y = -5.

Guest Aug 30, 2021

+1

427

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+19

HELP PLS

Suppose is a polynomial such that and . What is the sum of the coefficients of ?

uttoki Aug 30, 2021

Aug 29, 2021

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409

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ANYBODY PLEASE HELP

Find constants $A$ and $B$ such that \[\frac{x - 7}{x^2 - x - 2} = \frac{A}{x - 2} + \frac{B}{x + 1}\]for all $x$ such that $x\neq -1$ and $

Guest Aug 29, 2021

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422

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Complex Numbers

If Q = 11 - 5i, E = 3 - 2i, and D = 2i, find QED.

Guest Aug 29, 2021

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399

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Arithmetic Sequence

The first term of an arithmetic sequence is -8. Find the 20th term if the sum of the first 20 terms is 790.

Guest Aug 29, 2021

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408

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Geometry

Let us have a triangle ABC and a point D on BC such that BD=DC=DA. If angle ACB=50 then how many degrees are in angle ABC?

Guest Aug 29, 2021

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406

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help geometry

In triangle ABC, CA=4sqrt(2), CB=4sqrt(7), and A=60 degrees. What is B in degrees?

Guest Aug 29, 2021

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318

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PLEASE HELP CPHILL WYA!!!

Find constants $A$ and $B$ such that \[\frac{x - 7}{x^2 - x - 2} = \frac{A}{x - 2} + \frac{B}{x + 1}\]for all $x$ such that $x\neq -1$ and $x\neq 2$. Give your answer as the ordered pair $(A,B)$

Guest Aug 29, 2021

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291

1

Constant term

Find the constant term in the expansion of ( x^2 + 1/x )^4 *(x - 1/x^3).

Guest Aug 29, 2021

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372

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Quadratic

What real value of t produces the smallest value of the quadratic t^2 - 9t - 36 + t^2 + 7t - 16?

Guest Aug 29, 2021

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412

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Counting

A standard six-sided die is rolled 6 times. You are told that among the rolls, there was one 1, 2 two's, two three 's, and one four. How many possible sequences of rolls could there have been?

Guest Aug 29, 2021

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260

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System

Let (x_1, y_1), (x_2, y_2), ..., (x_n, y_n) be the real solutions to the system
x + 8y = 7
x^3 + 8y^3 = 343/81
Enter x_1 + y_1 + x_2 + y_2 + ... + x_n + y_n. read more ..

Guest Aug 29, 2021

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254

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Inequality

Find a linear inequality with the following solution set. Each grid line represents one unit.

Give your answer in the form ax + by + c > 0 or ax + by + c >= 0 where a, b and c are integers with no common factor greater than read more ..

Guest Aug 29, 2021

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260

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help algebra

A mathematician works for t hours per day and solves p problems per hour, where t and p are positive integers and 1 < p < 20. One day, the mathematician drinks some coffee and discovers that he can now solve 3p + 1 problems read more ..

Guest Aug 29, 2021

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361

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Sequence

The 3rd and 6th terms of a geometric progression are 8 and 64 respectively. Find the value of the 9th term

Guest Aug 29, 2021

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256

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Coordinates

The perpendicular bisector of the line segment connecting the points (-3,8) and (-5,7) has an equation of the form y=mx+b. Find m+b.

Guest Aug 29, 2021

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339

2

Help with subtraction of intergers...7th grade

Guest Aug 29, 2021

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308

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help counting

How many different positive, six-digit integers can be formed using the digits 2, 2, 5, 5, 9 and 9?

Guest Aug 29, 2021

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351

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help number theory

How many different primes appear in the prime factorization of $20!/18!$? (Reminder: The number n! is the product of the integers from 1 to n. For example 5! = 5*4*3*2*1 = 120)

Guest Aug 29, 2021

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307

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geometry

A kite flying the air has a 9-ft line attached to it. It's line is pulled taut and casts a 6-ft shadow. Find the height of the kite. If necessary , round your answer to the nearest tenth.

Guest Aug 29, 2021

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320

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Cylinder

The height of a right cylinder is 2.5 times its radius. If the surface area of the cylinder is 60 cm^2, what is the radius of the cylinder in centimeters?

Guest Aug 29, 2021

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