All Questions ⁺⁰238459 Questions

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325

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HELP

Say that a positive integer is “five-important” if it is a multiple of 5 and/or contains the digit 5. For instance, the numbers 55, 120, and 456 are five-important, but the number 2019 is not. Say that a number is “super-five-important” if it is five-important read more ..

Guest Apr 20, 2022

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391

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hi ok

Guest Apr 20, 2022

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388

2

Math

A King in ancient times agreed to reward the inventor of chess with one grain of wheat on the first of the 64 squares of a chess board. On the second square the King would place two grains of wheat, on the third square, four grains of wheat, read more ..

Guest Apr 20, 2022

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362

3

Geometry

In triangle ABC, CA=4sqrt(2), CB=4sqrt(3), and A= degrees. What is B in degrees?

Guest Apr 20, 2022

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362

1

Base numbers

What is the average of all positive integers that have four digits when written in base 3, but three digits when written in base 5? Write your answer in base 10.

Guest Apr 20, 2022

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383

1

Probability

If I choose four cards from a standard -card deck,with replacement, what is the probability that I will end up with four cards from the same suit?

Guest Apr 20, 2022

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367

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Polynomials

Find the polynomial p(x) such that p(p(x)) = xp(x) + x^2 + 3x + 1.

Guest Apr 20, 2022

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417

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Basic Statistics

The mean of the integers , , read more ..

Guest Apr 20, 2022

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356

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maths .

Liam had 5/7 as many 20-cent coins as 1-dollar coins in his piggy bank. Each time, four 20-cent coins and six 1-dollar coins were taken out from the piggy bank. In the end, only seven 20-cent coins and four 1-dollar coins were left in the piggy bank. read more ..

Guest Apr 20, 2022

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399

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Simplify

Asuming that p and q are nonzero simplify: $\dfrac{(pq^3)^3(4p^2q^2)^2}{(2pq^3)^3}$

Guest Apr 20, 2022

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408

2

+151

Math

Eric took 2 hours to travel 3/5 of a journey. He completed the remaining 84 km in 1 hour. What was Eric's average speed for the whole journey?

Ajdabegano Apr 20, 2022

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395

1

+151

math

Some sliver and bronze coins are put into 2 money boxes. 1/5 of the coins are put into box A. 3/8 of the coins in Box B are silver. There are 85 bronze coins in box B. How many coins were put into box A?

Ajdabegano Apr 20, 2022

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385

1

Geometry

A translation maps A to Aprime and B to Bprime. We know AA' = 3, AB = 9 and AB' = 6. Find BA'.

Guest Apr 20, 2022

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377

1

help geometry

Two tangent circles are shown below. One circle is centered at (2,4) with radius 4, and the other circle is centered at (6,1) with radius 1. The equation of a common external tangent to the circles can be written in the form y = mx + b with read more ..

Guest Apr 20, 2022

Apr 19, 2022

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379

1

geometry

A circle with radius 2 is translated 5 units. What is the perimeter of the region swept out by the circle?

Guest Apr 19, 2022

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408

1

Coefficient

What is the coeffiicient of x^2 y^2 in the expansion of (x + y)^4 + (x + 8y)^4?

Guest Apr 19, 2022

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396

1

hi please help

Let $x$ and $y$ be real numbers satisfying $x^4y^5+y^4x^5=810$

Guest Apr 19, 2022

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388

1

help algebra

Let x and y be real numbers such that x^2 + y^2 = 2x + 4y + 2x + 8y. Find the largest possible value of x.

Guest Apr 19, 2022

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383

1

Probability

Write the following as a percentage of randomly selecting a black marble from a jar containing the following marbles:
7 white and 3 black
43 white and 3 black

Guest Apr 19, 2022

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375

1

Coordinates

Two black lines pass through the origin, as shown below. If their slopes are 2 and 4, then find the slope of the red line that bisects the acute angle between these lines.

read more ..

Guest Apr 19, 2022

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371

1

math

What is the slope of the line given by the equation below? y=12x-23

Guest Apr 19, 2022

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454

1

What is the slope-intercept equation of the line below? Do not include spaces in your answer. y-intercept (0,-1)

What is the slope-intercept equation of the line below? Do not include spaces in your answer.
y-intercept (0,-1) &nbs read more ..

Guest Apr 19, 2022

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