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392

Working Backwards with Branching

John had some sweets. He gave 1/3 of his sweets and another 4 to Peter. Then he gave 1/3 of the remaining sweets and another 3 to Mark, and 1/3 of the rest and another 3 to Xavier. In the end, he had 3 sweets left. How much did he have at first?
<read more ..

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Guest Aug 2, 2021

Aug 1, 2021

416

domtorretto

A shop gave a discount of $6 for every $40 spent. Mrs Ravi bought a dress and paid $117. What was the price of the dress before the discount?

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Guest Aug 1, 2021

398

need help

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 ?

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Guest Aug 1, 2021

406

Parabola

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 x-coordinate of the other x-intercept?

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Guest Aug 1, 2021

400

Parabola

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.

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Guest Aug 1, 2021

398

Algebra

Fill in the blank with a constant, so that the resulting quadratic expression is the square of a binomial.
x^2 + 8x + ____ + 3x^2 + 2x

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Guest Aug 1, 2021

382

Inequaity

Solve the inequality 4t^2 <= 9t - 2 - 13t + 2t^2.

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Guest Aug 1, 2021

400

Inequality

Solve the inequality x(x + 6) > 16 + x(x + 3).

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Guest Aug 1, 2021

298

Probability

As a soccer player, Mr. Fat makes a penalty kick 80% of the time. To show his J.V. team how to kick a penalty, Mr. Fat kicked 10 penalties in a row.

What is the prob. of mr fat making exactly 3 of the 10 kicks?
what read more ..

Guest Aug 1, 2021

476

Decimals

For how many integer values of n between 1 and 1000 inclusive does the decimal representation of n/1375 + n/3 terminate?

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Guest Aug 1, 2021

553

help please cphill

A stick has a length of 5 units. The stick is then broken at two points, chosen at random. What is the probability that all three resulting pieces are shorter than 2 units?

I know this was answered already but these are read more ..

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Guest Aug 1, 2021

393

help algebra

Let f(x)=3x^2 - 4x - x^2 + 7x + 8. Find the constant k such that f(x)=f(k-x) for all real numbers x.

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Guest Aug 1, 2021

455

Last two digits

Find the last two digits of the following sum: $5! + 6! + 7! + 8! + 9! + ... + 100!$

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Guest Aug 1, 2021

412

Coordinates

A quadrilateral has four points A(0,1), B(1,-3), C(5,-2) and D(4,0) as coordinates What is the area of quadrilateral ABCD?

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Guest Aug 1, 2021

790

Given that $a$ and $b$ are real numbers such that $-3\leq a\leq1$ and $-2\leq b\leq 4$, and values for $a$ and $b$ are chosen at random,

Given that $a$ and $b$ are real numbers such that $-3\leq a\leq1$ and $-2\leq b\leq 4$, and values for $a$ and $b$ are chosen at random, what is the probability that the product $a\cdot b$ is positive? Express your answer as read more ..

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Guest Aug 1, 2021

455

help

What is the largest integer value of m such that the equation 3x^2 - mx + 21 = 0 has no real solutions?

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Guest Aug 1, 2021

305

number theory

For how many positive integer values of n is 3^n a factor of 15!*16!?

Guest Aug 1, 2021

418

You forgot to answer this

https://web2.0calc.com/questions/not-my-homework

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Guest Aug 1, 2021

409

help geometry

Two side lengths of a triangle are 17 and 11. What is the longest possible integer length of the third side of the triangle?

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Guest Aug 1, 2021

414

geometry

Two side lengths of a triangle are 17 and 11. What is the shortest possible integer length of the third side of the triangle?

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Guest Aug 1, 2021

470

help math

What is the numerical value of x: $x = \frac{1}{3-\frac{1}{3-\frac{1}{3-\ldots}}}$

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Guest Aug 1, 2021

305

Geometry

Let A, B, C be points on circle O such that AB is a diameter, and CO is perpendicular to AB. Let P be a point on OA, and let line CP intersect the circle again at Q. If OP = 20 and PQ = 8, find r^2, where r is the radius of the read more ..

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Guest Aug 1, 2021

412

Coordinates

Find the equation of the line passing through the points (-2,-17) and (5,-11). Give your answer in "y = mx + b" form.

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Guest Aug 1, 2021

449

help quadratic

GetThere Airlines currently charges 200 dollars per ticket and sells 40,000 tickets a week. For every 10 dollars they increase the ticket price, they sell 100 fewer tickets a week. How many dollars should they charge to maximize their total read more ..

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Guest Aug 1, 2021

701

+50

im honestly clueless.

In the game of Twister, a spinner randomly selects either an arm or a leg, and also selects one of four colors, one of which is red, each with equal probability, and players have to move the appropriate body part to the appropriately colored spot on the read more ..

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HELPplzplzplz Aug 1, 2021

All Questions ⁺⁰237796 Questions

Working Backwards with Branching

domtorretto

need help

Parabola

Parabola

Algebra

Inequaity

Inequality

Probability

Decimals

help please cphill

help algebra

Last two digits

Coordinates

Given that $a$ and $b$ are real numbers such that $-3\leq a\leq1$ and $-2\leq b\leq 4$, and values for $a$ and $b$ are chosen at random,

help

number theory

You forgot to answer this

help geometry

geometry

help math

Geometry

Coordinates

help quadratic

im honestly clueless.

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