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522

+106

Help on graphing functions!

The graph of y=f(x) is shown in red above. For how many values of c is f(c) = -1?
(Assume grid lines are spaced 1 unit apart.)

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QuestionableBean Jul 24, 2021

499

don't know how... plz help

While staying in a 15-story hotel, Polya plays the following game. She enters an elevator on the $6th$ floor. She flips a fair coin five times to determine her next five stops. Each time she flips heads, she goes up one floor. Each time she flips tails, read more ..

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Guest Jul 24, 2021

582

CPhill please help!

In this problem, $a$ and $b$ are integers, such that $a \ge b.$
If $a+b\equiv 2\pmod{10}$ and $2a+b\equiv 1\pmod{10}$, then what is the last digit of $a-b$?

catmg ●

Guest Jul 24, 2021

467

quadratic

The equation y = -6t^2 + 51t describes the height (in feet) of a projectile launched from the surface of Mars at 51 feet per second. In how many seconds will the projectile first reach 118 feet in height?

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Guest Jul 24, 2021

448

geometry

The sides of triangle XYZ are XY = XZ = 25 and YZ = 50. A semicircle is inscribed in triangle XYZ so that its diameter lies on YZ and is tangent to the other two sides. Find the area of the semicircle.

read more ..

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Guest Jul 24, 2021

467

help counting

How many ways are there to put 5 balls in $4$ boxes if the balls are not distinguishable but the boxes are?

CPhill ●●

Guest Jul 24, 2021

490

Help math

How many values of x satisfy both of the following conditions?
(a) x is a multiple of 7, not necessarily positive.
(b) x^3 is less than 500.

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Guest Jul 24, 2021

498

Counting

How many ways can you distribute 4 different balls among 5 different boxes?

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Guest Jul 24, 2021

1339

+27

Math question Please help I am stumped

The Colossus Ferris wheel debuted at the 1984 New Orleans World’s Fair. The ride is 180 ft tall, and passengers board the ride at an initial height of 15 ft above the ground. The height above ground, h, of a passenger on the ride is a periodic function read more ..

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hippobush2 Jul 24, 2021

488

Algebra

Let u and v be the solutions to 3x^2 + 5x + 11 = 0. FInd u/v + v/u.

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Guest Jul 24, 2021

436

+68

Help

Convert the rectangular coordinates to polar coordinates and spherical coordinates.

brinlin Jul 24, 2021

489

none

what is 1+1

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Guest Jul 24, 2021

431

PLZ HALP

In the game Yahtzee, a player rolls five fair six-sided dice, and gets a Yahtzee if all five dice show the same number. After the initial roll, the player gets two chances to reroll some of the dice. What is the probability that, on the initial roll, at read more ..

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Guest Jul 24, 2021

436

+41

Please Help!!!!!

Let $f(x)=x^2-2x$. What is the value of $f(f(f(f(f(f(-1)))))$?

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CENTTRAL Jul 24, 2021

358

circles

Let AB and CD be chords of a circle, that meet at point Q inside the circle. If AQ = 6, BQ = 12, and CD = 30, then find the minimum length of CQ.

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Guest Jul 24, 2021

457

Right Triangle

The shorter leg of a right triangle is 9 ft shorter than the longer leg. The hypotenuse is 9 ft longer than the long leg. Find the sides of the triangle

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Guest Jul 24, 2021

413

Quadratic

Find a formula for a quadratic function whose graph has x-intercepts at (1, 0) and (5, 0), and y-intercept at (0, 7).

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Guest Jul 24, 2021

513

Help! Need answer.

If $d-6c=4$ and $2d-9c=20$, find the value of $\frac{d}{c}$.

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Guest Jul 24, 2021

458

PLease help give answer.

All triangles have the same value, and all circles have the same value. What is the sum of three circles? \begin{align*} \Delta + \bigcirc + \Delta + \bigcirc + \Delta&= 21\\ \bigcirc + \Delta+\bigcirc+\Delta+\bigcirc &= 19\\ \bigcirc + \bigcirc read more ..

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Guest Jul 24, 2021

453

+24

Help

Question:

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hendy Jul 24, 2021

482

+24

Help

Question:

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hendy Jul 24, 2021

-1

616

Help! Answer needed. Due tomorrow.

Billy is $\frac15$ of his brother's age. In $9$ years, Billy will be $\frac12$ of his brother's age. What is the sum of their current ages, in years?

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Guest Jul 24, 2021

-1

525

NEED ANSWR NOW!

Given that $2x - 3y = 8$ and $4x + 3y = -2$, what is the product of $x$ and $y$?

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Guest Jul 24, 2021

438

Coordinates

What are the coordinates of the point on the directed line segment from (1,-5) to(10, 1) that partitions the segment into a ratio of 1 to 5?

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Guest Jul 24, 2021

All Questions ⁺⁰238070 Questions

Help on graphing functions!

don't know how... plz help

CPhill please help!

quadratic

geometry

help counting

Help math

Counting

Math question Please help I am stumped

Algebra

Help

none

PLZ HALP

Please Help!!!!!

circles

Right Triangle

Quadratic

Help! Need answer.

PLease help give answer.

Help

Help

Help! Answer needed. Due tomorrow.

NEED ANSWR NOW!

Coordinates

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