All Questions ⁺⁰237681 Questions

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469

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Likelihood of getting a Yarborough

In the card game Bridge (and its predecessor Whist), a cooloquial term often used for a very bad hand is called a Yarborough. It is defined as any hand of 13 cards with no card greater than a 9 (i.e. no 10's, Jacks, Queens, Kings, or Aces). read more ..

Guest Jul 30, 2021

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501

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+10

Distance, Rate and Time problem

A plane traveled 812 miles to Austin and back. The trip there was with the wind. It took 7 hours. The trip back was into the wind. The trip back took 14 hours. FInd the speed of the plane in still air and the speed of the wind.

goldenroses Jul 30, 2021

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433

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help i think

how to make account

Guest Jul 30, 2021

-1

429

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+10

Distance, Rate and time problem

A jet left the airport flying north five hours before a passenger plane. The passenger plane flew in the opposite direction going 260 km/h faster than the jet for htree hoiurs after which time the planes were 2650 km apart. What was the jet's speed? read more ..

goldenroses Jul 30, 2021

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460

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+10

Ashley left the hospital and traveled toward her friend's house. Emily left one hour later traveling at 60 mph in an effort to catch up to A

Ashley left the hospital and traveled toward her friend's house. Emily left one hour later traveling at 60 mph in an effort to catch up to Ashley. After traveling for four hours Emily finally caught up. Find Ashley's average speed.

goldenroses Jul 30, 2021

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309

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Domain

What is the domain of the function
f(t) = 1/((1 - t)^2 - (1 + t)^2)?
Express your answer in interval notation.

Guest Jul 30, 2021

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473

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Functions

If f(x) = a/(x + 2), solve for the value of a such that $f(0) = f^{-1}(-3a)$.

Guest Jul 30, 2021

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438

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help with math

What is the sum of all three-digit odd integer palindromes?

Guest Jul 30, 2021

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434

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Polygon

Five angles of a hexagon measure 119°, 129°, 140°, 129°, and 95°. What is the measure of the sixth angle?

Guest Jul 30, 2021

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420

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Inequality

What is the sum of all of the positive integer solutions of 24-2x >17

Guest Jul 30, 2021

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339

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help geometry

In the diagram below, angle AOB = 99 degrees, and angle AOC = 138 degrees. What is the measure of angle BOC?

Guest Jul 30, 2021

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395

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Bases

A base-10 integer n = 4d_9 = d0_7, where d represents a single digit. What is the value of n?

Guest Jul 30, 2021

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275

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Complex Numbers

Let z be a complex number such that |z| = 1. Find the largest possible value of |z^2 + 1|.

Guest Jul 30, 2021

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330

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HELP PLEASE

Line L1 represents the graph of 3x+4y = -14. Line L2 passes through the point -5,7 and is perpendicular to line L1. If line L2 represents the graph of y=mx+b, then find m+b.

Guest Jul 30, 2021

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271

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help coordinates

A =(10,-10) and O=(0,0) Determine the sum of all x and y coordinates of all points Q on the line y =x + 8 such that angle OQA =90

Guest Jul 30, 2021

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402

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math

The length of three unequal edges of a rectangular solid block are in G.P. The volume of the block is 216 cm^3 and the total surface area is 312 cm^2. The length of the longest edge is ?

Guest Jul 30, 2021

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309

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Shadow of Object

A rhombus with 2 angles of 60 degrees and 2 angles of 120 degrees has side length of 100. It is positioned in the 3d plane such that its shorter diagonal is parallel to the base of the plane. A light source at infinity forms a shadow with the rhombus. The read more ..

Guest Jul 30, 2021

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324

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help counting

Catherine rolls a 6-sided die six times, and the product of her rolls is 1200. How many different sequences of rolls could there have been? (The order of the rolls matters.)

Guest Jul 30, 2021

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550

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+51

2 Parabola questions!

1. The vertex of a parabola is at (12,4), and its axis of symmetry is vertical. One of the x-intercepts is at (15,0). What is the -coordinate of the other -intercept?

2. The x-intercepts of the parabola y=x^2+bx+c read more ..

CCeed Jul 30, 2021

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409

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help quadratic

The x-intercepts of the parabola y = x^2 + bx + c are (-3,0) and (-5,0) Find the equation of the parabola, and submit your answer in y = x^2 + bx + c form.

Guest Jul 30, 2021

+1

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891

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Help Please

The following polar grid is centered at the origin, with concentric circles of positive integer radii starting at $1,$ and consecutive rays through the origin with angles of $\pi/12$ between them:

[asy] size(200); pair A = (0,0);read more ..

Guest Jul 30, 2021

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450

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Trig word problem, please help

A large tree stump is located SE of a household, that is found at the origin of the diagram. A land surveyor measures the tree stump to be 7km East of the household and 12km straight south of the household.
a) Show your work to find read more ..

Guest Jul 30, 2021

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