All Questions ⁺⁰237994 Questions

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377

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quadratics

use the quadratics formula to solve (3x + 2)^2 - (8 * 9) = -4x

Guest Apr 7, 2022

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259

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geometry

In trapezoid PQRS, Base PQ is parallel to base RS. Let point X be the intersection of diagonals PR and QS. The area of triangle PQX is 20 and the area of triangle RSX is 48. Find the area of trapezoid PQRS.

Guest Apr 7, 2022

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259

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help algebra

Define a@b = ab - b^2 and a#b = a + b - ab. What is (6@2)/(6#2)?

Guest Apr 7, 2022

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305

1

Sum

Find the value of the sum $\binom{99}{0} + \binom{99}{2} + \binom{99}{4} + \dots + \binom{99}{98}.$

Guest Apr 7, 2022

0

375

1

+56

help

smasai1324 Apr 7, 2022

+1

400

2

+46

The other answer was wrong.

A right triangle with integer leg lengths is called cool if the number of square units in its area is equal to the number of units in the sum of the lengths of its legs. What is the sum of all the different possible areas of cool right triangles?
read more ..

SpaceXGeek Apr 7, 2022

0

402

1

+56

help plz me

smasai1324 Apr 7, 2022

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326

1

what 2 numbers add to 12 but multiply to make -8

what 2 numbers add to 12 but multiply to make -8

Guest Apr 7, 2022

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391

1

help me plz

Guest Apr 7, 2022

0

244

0

Counting

How many positive integers, not exceeding 100, are multiples of 2 or 3 but not 4 or 5?

Guest Apr 7, 2022

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441

1

probability

A chalk box contains 5 pink chalks and 4 white chalks. If three items are picked at random, assuming that you return the chalk after picking each time, what is the probability that at least 1 of them is a pink chalk? *
91.22%
76.38% read more ..

Guest Apr 7, 2022

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305

1

math help

Can somebody help me

Guest Apr 7, 2022

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320

0

probability

A card game is played using only the short deck shown in the image. What is the probability of picking either a club or a heart for the first trial and either a red card or a spade for the second trial assuming that you return the first card before proceeding read more ..

Guest Apr 7, 2022

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235

0

Solve for x.

Solve for x: a/(x - a) + b/(x - c) = c/(x - c).

Guest Apr 7, 2022

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313

1

Counting problem

In how many ways can you change a 20 dollar bill using 10 dollar bills, 5 dollar bills, 2 dollar bills, and 1 dollar bills?

Guest Apr 7, 2022

+1

418

1

help pls

i have been working on this for a while someone please help

read more ..

Guest Apr 7, 2022

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322

0

MTH

A company sells 4000 items a day at $50 each. They recently tried to raise the price by $ 0.5 and found they sold 50 less items a day.
(a) If the number of items they sell in a day N is linearly related to the sale price read more ..

Guest Apr 7, 2022

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298

0

Can I indicate the value of a variable? For example, X+Y can I indicate what X and Y are in the calculator?

If I write a variable such as V+V, can I indicate what V equals so it solves the problem?

Guest Apr 7, 2022

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239

0

HELP!

You are given f(x) = x4 - 3x3 - kx - 5. When f(x) is divided by x + 3 the remainder is 169.
Use your value of k from the previous question to determine the remainder when f(x) is divided by x - 3. read more ..

Guest Apr 7, 2022

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375

1

Parabola

A parabola has two x intercepts at (-2 , 0) and (-3 , 0) and passes through the point (5 , 10). Find the equation of this parabola.

Guest Apr 7, 2022

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238

0

Algebra

If x and y satisfy (x-3)^2 + (y- 7)^2 = 64, what is the minimum possible value of x^2 + y^2?

Guest Apr 7, 2022

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240

0

triangle geometry

In triangle PQR, PQ=13 , QR=14 , and PR=16 . Let M be the midpoint of QR . Find PM.

Guest Apr 7, 2022

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315

1

How to doooo?

If f(x) is a function, then we define the function to be the result of n applications of f to x, where n is a positive integer. For example,
We define the order of an input x with respect to f to be the smallest positive read more ..

Guest Apr 7, 2022

Apr 6, 2022

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375

3

plz

can someone solve this?

Guest Apr 6, 2022

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305

1

math

Circle O is the incircle of triangle ABC and is also the circumcircle of triangle XYZ. Point X is on BC, point Y is on AB. and point Z is on AC. If angle A= 40 degrees, angle B= 60 degrees, and angle C= 80 degrees what is the read more ..

Guest Apr 6, 2022

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