All Questions +0 237785 Questions

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.

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Guest Jan 13, 2022

328

Geometry

Solve (x+4)^3 + (x+5)^3 = (x+7)^3 + (x-2)^3

Guest Jan 13, 2022

247

Algebra

Guest Jan 13, 2022

256

Graphing

Suppose the graph of y = f(x) includes the points (1,-5), (-2,3) and .
Based only on this information, there are two points that must be on the graph of y = f(x(x)) . If we call those points (a,b) and (c,d) what is ab + cd? read more ..

Guest Jan 13, 2022

314

Binomial coefficients

What is the sum of all integer values $n$ for which $\binom{26}{13}+\binom{26}{n}=\binom{27}{14}$?

In writing the integers from 10 through 99 inclusive, how many times is the digit written?

Guest Jan 13, 2022

320

Counting

Solve the inequality 2x - 5 <= x + 12. Give your answer as an interval.

Guest Jan 13, 2022

358

Inequality

Before the break, The school had 180 Students in virtual learning. This semester there are only 160 students in virtual learning. What is the percent decreasing? (Round to whole percent)
10%

11% read more ..

Guest Jan 13, 2022

410

+237

I need it

A gym has two machines you want to use. An elliptical trainer that burns 8 calories per minute, and a stationary bike that burns 6 calories per minute. You have 40 minutes to exercise at the gym, and you want to burn 300 calories total using both read more ..

Slimesewer Jan 13, 2022

588

Systems of Equations Word Problems

איך עושים קו שבר? / How to make a break line

Guest Jan 13, 2022

263

How to make a break line

Guest Jan 13, 2022

401

Functions

For real numbers x, let
f(x) = x + 2 if x > 3,
f(x) = 2x^2 + 3x + a if x <= 3.
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The interior angles of a convex polygon are in arithmetic progression. The smallest angle is 120 degrees and the common difference is degrees. Find the number of sides of the polygon.

Guest Jan 13, 2022

381

geometry

Find the distance between the x-intercept and the y-intercept of the graph of the equation

Guest Jan 13, 2022

370

Coordinates

Compute the sum of all positive integers k for which the number k*1984*2 has exactly 21 positive divisors.

Guest Jan 13, 2022

272

Number Theory

Guest Jan 13, 2022

280

3d geometry

Rectangle ABCD is the base of pyramid PABCD. If AB = 8, BC = , $PA \perp AD$, $PA \perp AB$, and PB = , then what is the volume of PABCD?

Guest Jan 13, 2022

-2

406

+64

I NEED HELP

The temperature of a city changed by a total of −15 degrees Celsius over a 5-week period. The temperature changed by the same amount each week.
Part A: Write an expression to show the average change in the temperature of the city each week. read more ..

Suppose and are different prime numbers greater than 2. How many whole-number divisors are there for the integer ?

Kakashi Jan 13, 2022

323

All help greatly appreciated.

Each of the symbols $\star$ and $*$ represents an operation in the set $\{+,-,\times,\div\}$, and $\frac{12\star 2}{9*3}=4$. What is the value of $\frac{10\star 7}{24*9}$? Express your answer as a common fraction

Guest Jan 13, 2022

406

Please Help

In Triangle ABC, Sin A =3/5, while Cos B = 5/13. What is the Value of cos C?

Guest Jan 13, 2022

410

I need help!

Hi! I got stuck on this hard probability problem while doing my math homework. I would appreciate any help!

A circular spinner is divided into 4 congruent sectors, each marked with a positive integer from 1 to 4. If the spinner read more ..

Guest Jan 13, 2022

437

+23

Hard Probability Problem

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DreamingFox1214 Jan 13, 2022

Jan 12, 2022

440

Help

A network of roads connects locations T, O, W, N, and S as shown. The accompanying table shows the tolls between adjacent locations. What is the least expensive total toll to travel from T to W along the TOWNS road network?

Find the sum of the positive square free divisors of .
Note: A natural number is square free if it is not the multiple of any perfect square greater than 1.

Guest Jan 12, 2022

384

Number Theory

a is directly proportional to m and n^2, and inversely proportional to y^3. If a=9 when m=2, n=8 and y=4, solve for a when m=6, n=7 and y=3.

I know the formula for direct and inverse proportions (y=kx and y=k/x), but I'm not entirely read more ..

Guest Jan 12, 2022

412

+28

Proportions

If g(x) = (x + 3)/4, for what value of x will g(2x) = 2(g(x)) ? Express your answer in simplest form.

caramel Jan 12, 2022

388

Algebra

Nell and David each have some money. If Nell gives David $16, both of
them will have the same amount of money. If David gives Nell $9, the
amount of money Nell has to the amount of money David has will be in
the ratio 6:1. How much read more ..

Guest Jan 12, 2022

423

+111

help me