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393

Equations

The number of quarters in John’s collection is 10 more than 5 times the number of nickels in his collection. John has 65 quarters in his collection. Write the equation that can be used to determine the number of nickels in John’s collection, read more ..

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Guest Jan 5, 2022

417

Geometry

A square is constructed using the hypotenuse line AC of right triangle ABC as a side, as shown below. Find the area of the square if AB = 5 and BC = 8.

read more ..

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Guest Jan 5, 2022

430

Rate

When I used to work at Lowe's I received $12 for each hour that I worked. If I ended up working 5 hours, how much money did I earn?
a $12
b $50
c $60 read more ..

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Guest Jan 5, 2022

361

Find . Express your answer as a mixed number.

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Guest Jan 5, 2022

287

Geometry

1) Let ABCDE be a regular pentagon. Prove that AC bisects angle BCE and AD bisects angle BDE.

2) In quadrilateral BCDE, CBD = 31 degrees, CED = 47 degrees, BCE = 85 degrees. Find angle BDE.

Guest Jan 5, 2022

341

Geometry

A circle is placed in a 90 degree corner, and that circle is touching both walls of that corner. a point on the circumference of the circle is 18 inches from one wall and 35 inches from the other wall. what is the radius of the circle? if some work could read more ..

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Guest Jan 5, 2022

426

+204

A line goes through point , point and point . What is the value of ?

A line goes through point , point and read more ..

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AlgebraGuru Jan 5, 2022

345

Math problem

A ball dropped 250 feet. Each time it hits the fround, it bounces back up 1/2 the height it has fallen. Find the total distance, in feet, traveled when the ball hits the ground for the 6th time.

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Guest Jan 5, 2022

317

pls help

These five real numbers form a geometric sequence with r > 0 [a, b, c, d, e]. If a + e = 1282 and b + d = 580, find the value of c.

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Guest Jan 5, 2022

383

Please help me!

Which of the following statements are correct?
A. If one interior angle of a parallelogram is a right angle, then the parallelogram must be a rectangle.
B. If two diagonals of a rectangle are perpendicular, then the rectangle must be a square. read more ..

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Guest Jan 5, 2022

310

Number Theory

Determine the largest possible integer n such that 942! + 120! is divisible by 60^n.

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Guest Jan 5, 2022

266

Geometry

Let A_1 A_2 A_3 ... A_{10} be a regular polygon. A rotation centered at A_1 with an angle of a takes A_2 to A_{10}. Given that a < 180 degrees, find a, in degrees.

Guest Jan 5, 2022

339

Number Theory

x,y, and z are positive integers such that gcd(x, y, z) = 14 and lcm(x, y, z) = 630 and y = 3x. What is the smallest possible value of x + y + z?

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Guest Jan 5, 2022

264

Functions

(a) Let f : (-infty,0) U (0,infty) -> R be defined by f(x) = 1/x. Show that f has no inverse function.

(b) Let g : (0,infty) -> R be defined by g(x) = (x + 1)/x. Show that g has an inverse function.

Guest Jan 5, 2022

339

40% of 1836480

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Guest Jan 5, 2022

339

Series

Let a1, a2, a3, ... be an arithmetic sequence. If a2/a4 = 3, what is a5/a3?

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Guest Jan 5, 2022

531

Somewhat confused by this problem

Let z be a complex number, and let n be a positive integer such that .

a) Prove that .
b) Find the possible values of in exponential form.
c) Prove that must be divisible by 6.

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Guest Jan 5, 2022

287

Geometry

Two lines p and q intersect at X at an angle of 36 degrees. Let A be a point inside the 36 degrees angle formed by p and q Let B the reflection of A through line p and Let c be the Reflection of A through line q. Find angle BAC.

Guest Jan 5, 2022

333

Number Theory

What is the units digit of the sum of 2^2020 + 7^2020

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Guest Jan 5, 2022

280

Algebra

Find polynomial f(n) such that for all integers n we have

1^5 + 2^5 + 3^5 + ... + n^5 = f(n)
Write f(n) as a polynomial with terms in descending order of n

Guest Jan 5, 2022

350

Help

What is equivalent to 2x – 3

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Guest Jan 5, 2022

373

Algebra

Find 1/(a - 1) + 1/(b - 1), where a and b are the roots of the quadratic equation 2x^2 - 9x + 2 = 0.

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Guest Jan 5, 2022

412

help math

If x and y are positive integers for which 3x + y + xy = 115, then what is x + y?

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Guest Jan 5, 2022

348

Algebra

If a + b + c = -3, a+3b+c = 9, a+b+3c = -19, then find abc.

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Guest Jan 5, 2022

329

Algebra

When a polynomial is divided by -3x^3 + 10x - 11, what are the possible degrees of the remainder? Enter all the possible values, separated by commas.

Guest Jan 5, 2022

All Questions ⁺⁰237687 Questions

Equations

Geometry

Rate

Find . Express your answer as a mixed number.

Geometry

Geometry

A line goes through point , point and point . What is the value of ?

Math problem

pls help

Please help me!

Number Theory

Geometry

Number Theory

Functions

40% of 1836480

Series

Somewhat confused by this problem

Geometry

Number Theory

Algebra

Help

Algebra

help math

Algebra

Algebra

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