All Questions

283

do this

3/5 of John’s savings is equal to 2/3 of Mark’s savings. The difference in their savings is equal to 1/5 of Bill’s savings. If John saves $35 more than Bill, how much must Mark give to Bill so that both of them have the same amount of money?

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Guest May 3, 2022

264

Inverse functions

If f(x)=5x-12, find a value for $x$ so that $f^{-1}(x)=f(x-1)$.

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Guest May 3, 2022

269

Complex Numbers

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

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Guest May 3, 2022

260

Complex Numbers

Express (4 - 5i)(5 + 5i)(2 - 7i) in the form a + bi, where a and b are integers and i^2 = -1.

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Guest May 3, 2022

281

Probability question

A bag contains 6 red marbles, 5 blue marbles and 8 green marbles. If three marblesare drawn out of the bag, what is the probability, to the nearest 10th of a percent, that all three marbles drawn will be green?

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Guest May 3, 2022

244

Help

John counts up from 1 to 13, and then immediately counts down again to 1, and then back up to 13, and so on, alternately counting up and down: What is the integer in his list?

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Guest May 3, 2022

287

help

There are 200 red marbles and 90 white marbles in Box A. There were 80 red marbles and 100 white marbles in Box B. After some marbles were transferred from Box A to Box B, the ratio of red marbles to white marbles in Box A became 1:1 and the ratio of red read more ..

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Guest May 3, 2022

483

+136

Find the function f(x) described by the given initial value problem.

Find the function described by the given initial value problem.

?

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THESHADOW May 3, 2022

303

arithmetic sequence

The fifth term of an arithmetic sequence is 9 and the 32nd term is . What is the 23rd term?

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Guest May 3, 2022

May 2, 2022

270

Probability

A point in space (x,y,z) is randomly selected so that -1\le x \le 1, -1\le y \le 1, -1\le z \le 1. What is the probability that x +y +z \le 1?

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Guest May 2, 2022

282

Algebra

The arithmetic mean between two numbers is 75 and their geometric mean is 21. Find the numbers.

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Guest May 2, 2022

288

The square with vertices is cut by the line into congruent quadrilaterals. The perimeter of one of these congruent quadrilaterals

The square with vertices (-a,-a),(a,-a),(-a,a),(a,a) is cut by the line y=x/2 into congruent quadrilaterals. The perimeter of one of these congruent quadrilaterals divided by a equals what? Express your answer in simplified radical form. read more ..

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Guest May 2, 2022

264

geometry

The two externally tangent circles each have a radius of 1 unit. Each circle is tangent to three sides of the rectangle. What is the total perimeter of the shaded region? Express your answer in terms of pi

read more ..

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Guest May 2, 2022

256

+38

help me

A sum of money was shared among four men. Max and John had 25% and 30% of it respectively while those of. Bobby and Ivan were unknown. Ivan’s share was 70% more than Bobby’s share. If the sum of money was $21600, how much money did Ivan get?

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appleboi1u May 2, 2022

333

+17

Help solving this linear equation?

Solve for :

Should I simplify it, or...?
read more ..

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ChocoSwirl May 2, 2022

239

Help please

Dennis and James had some savings. 25% of Dennis' savings was $120 more than 1/10 of James's savings. After Dennis had spent 5/6 of his savings and James had spent 1/3 of his savings, James' savings was $70 more than Dennis' savings. how much was Dennis' read more ..

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Guest May 2, 2022

260

+38

Math

Lionel and Dennis each have some sweets. If Lionel gives 26 sweets to Dennis, both of them will have the same number of sweets. If Dennis gives 12 sweets to Lionel, the number of sweets that Lionel has to the number of sweets that Dennis has will be in read more ..

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appleboi1u May 2, 2022

270

Exponentials

Find all values of t such that 6^(3t - 1) = 36^t.

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Guest May 2, 2022

277

Parallelogram

What is the perimeter of parallelogram WXYZ?

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Guest May 2, 2022

308

+46

Modular Number Theory

Hi, I hace been stuck for a while on this. 11 is not the answer.

If a,b,c are positive integers less than 13 such that
then determine the remainder a+b+c is divided by 13. read more ..

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SpaceXGeek May 2, 2022

312

+70

Evaluate the infinite geometric series:

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ItsFree May 2, 2022

273

Algebra

Find all x so that 8x^2 * 4x = 2. Enter all the solutions, separated by commas.

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Guest May 2, 2022

-1

304

Please help - trigonometry in a unit circle.

Determine the value of the central angle θ for 0 < θ < 2pi.

Determine the values of the central angle θ for -2pi < 0 < 4pi. How is this related to coterminal angles?

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Guest May 2, 2022

263

help algebra

Let a and b be real numbers such that a^3 + 3ab^2 = 679 and 3a^2 b + b^3 = -679. Find a + b.

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Guest May 2, 2022

281

System

Suppose a, b, c, and d are real numbers which satisfy the system of equations
a + 2b + 3c + 4d = 10
4a + b + 2c + 3d = 4
3a + 4b + c + 2d = -10 read more ..

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Guest May 2, 2022

All Questions ⁺⁰236380 Questions

do this

Inverse functions

Complex Numbers

Complex Numbers

Probability question

Help

help

Find the function f(x) described by the given initial value problem.

arithmetic sequence

Probability

Algebra

The square with vertices is cut by the line into congruent quadrilaterals. The perimeter of one of these congruent quadrilaterals

geometry

help me

Help solving this linear equation?

Help please

Math

Exponentials

Parallelogram

Modular Number Theory

Evaluate the infinite geometric series:

Algebra

Please help - trigonometry in a unit circle.

help algebra

System

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