All Questions ⁺⁰213393 Questions

-1

27

1

Please help

If , evaluate .

Guest Jun 23, 2022

0

25

1

help algebra

Let a and b be real numbers such that a+b=-1 and a-b=2. Compute a^2-b^2.

Guest Jun 23, 2022

Jun 22, 2022

0

20

1

Geometry

Two sectors of a circle of radius 12 overlap as shown, with P and R as the centers of the respective circles. Determine the area of the shaded region.

read more ..

Guest Jun 22, 2022

0

20

1

help plz

What is the ones digit of 1^2009 + 2^2009 + 3^2009 + ... + 2009^2009 + 2010^2009 + ... + 10000^2009?

Guest Jun 22, 2022

0

17

1

Number Theory

If 1+12+123+1234+12345+123456+1234567+12345678 is congruent to n modulo 8, what is the value of n?

Guest Jun 22, 2022

+1

26

1

+82

Help pls :(

A positive integer N has 24 divisors. The number of divisors of N, 2N, 3N, 5N, and 7N is strictly increasing. What is the sum of N's digits?

Derekshackk Jun 22, 2022

+1

20

0

+82

HELP ANYONE PLS

Compute the sum of all positive integers that are equal to 105 plus their largest prime factor.

Derekshackk Jun 22, 2022

+1

32

4

+82

Help anyone pls im desperate

How many 3-digit numbers are there that have exactly 16 divisors?

Derekshackk Jun 22, 2022

0

17

1

Domain

What real values of x are not in the domain of
f(x) = 1/((x^2 + 3x - 4)*(x^2 + 9x + 20))?

Guest Jun 22, 2022

0

20

1

Number Theory

What is the remainder when 5^30*4^30 is divided by 7?

Guest Jun 22, 2022

0

18

1

Help

3 cards are chosen at random from a standard 52-card deck. What is the probability that they can be arranged into a group of three consecutive cards, all of the same suit? For this problem, an Ace can either come before a 2 or after a King, but not both read more ..

Guest Jun 22, 2022

0

25

1

Triangle

In any isosceles triangle ABC with AB = AC, the altitude AD bisects the base BC so that BD = DC. If AB = AC = 25 and BC = 18, then determine the length of the altitude .

Guest Jun 22, 2022

0

16

1

Number Theory

Let S = 1 + 2 + 3 + 4 + ... + 209 + 2010 + 2011 + ... + 4000. What is the residue of S, modulo 2010?

Guest Jun 22, 2022

0

23

2

PLS SOMEONE I NEED HELP

How many 3-digit numbers are there that have exactly 16 divisors?

Guest Jun 22, 2022

0

24

2

Fractions

There exist several positive integers $x$ such that $\frac{1}{x^2+x}$ is a terminating decimal. What is the smallest such integer?

Guest Jun 22, 2022

0

24

1

weird fraction

What is the numerical value of x = ?

Guest Jun 22, 2022

0

23

1

HELP PLS

There are three consecutive positive integers. The smallest one is a multiple of 3, the middle one is a multiple of 5 and the largest one is a multiple of 7. What is the smallest possible sum of those three integers?

Guest Jun 22, 2022

0

27

0

+82

HELP ASAP

Compute the sum of all positive integers that are equal to 105 plus their largest prime factor.

Derekshackk Jun 22, 2022

0

20

1

help solve

Solve for x:
(3x + 12)(3x + 4) = (4x^2 + 8x + 18x^2)/(2x).

Guest Jun 22, 2022

0

16

1

algebra

An aqarium tank is 1/6 full of water. When 2 gallons of water are added, the tank becomes full. What is the total capacity of the aquarium tank, in gallons?

Guest Jun 22, 2022

0

18

1

help algebra

If I give my brother 5 dolalrs, then we will have the same amount of money. If instead he gives me 14 dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?
read more ..

Guest Jun 22, 2022

0

21

1

Please help

At a particular speed, a jumbo jet can travel its own length in 20 seconds. At this same speed, the jumbo jet taxied completely past a 710-foot-long hangar in 70 seconds, as shown. What is the length of the jumbo jet in feet?

Guest Jun 22, 2022

0

16

1

help

Let $J$ and $K$ be given points along a certain line. There are exactly two other distinct points $U$ and $V$ on this line such that $UJ/UK=7$ and $VJ/VK=7$. Let $W$ be the midpoint of $\overline{UV}$. Calculate the ratio $WJ/WK$.

Guest Jun 22, 2022

0

19

1

math problem

The positive difference between two consecutive odd perfect squares is 352. Compute the larger of the two squares.

Guest Jun 22, 2022

0

13

0

plz help

Given that 13^(-1) = 29 (mod 47), find 38^(-1) (mod 47), as a residue modulo 47. (Give a number between 0 and 46, inclusive.)

Guest Jun 22, 2022

5 Online Users