All Questions ⁺⁰237665 Questions

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478

1

equations

i dont know how to solve this 3 variable system of equations and i keep getting stuck

x+y+z=8
x+4y+6z=24
-2x+3y+5z=2

Guest Sep 25, 2020

0

558

1

algebra

If (x+y)^2 = 45 and xy=8, what is the value of (x-y)^2?

Guest Sep 25, 2020

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1358

1

math quiz 1-2

Venetta buys 2 pounds of pistachios and 3 pounds of almonds. The pistachios cost $4 more per pound than the almonds. She pays a total of $48. Which of the following are true? Select all that apply.
A.
One pound of pistachios plus read more ..

Guest Sep 25, 2020

0

963

1

math

A scientist needs 10 liters of a 20% acid solution for an experiment, but she has only a 5% solution and a 40% solution. To the nearest tenth of a liter, about how many liters of the 5% and the 40% solutions should she mix to get the solution she needs? read more ..

Guest Sep 25, 2020

0

538

1

Find the slope of a line through the points (-5, 2) and (-5, 4)

Find the slope of a line through the points (-5, 2) and (-5, 4)

Guest Sep 25, 2020

0

479

1

Hard Challenge Problem

The roots of \[x^2 + px + q = 0\]are real, where $p$ and $q$ are real numbers. Prove that the roots of \[x^2 + px + q + (x + a)(2x + p) = 0\]are real, for any real number $a.$

Guest Sep 25, 2020

0

711

1

alg 2 system

Which system of linear inequalities is represented by the graph?

y > x-2 and x – 2y < 4
y > x + 2 and x + 2y < 4
y > x-2 and x + 2y < 4
y> x-2 and x + 2y
read more ..

Guest Sep 25, 2020

0

513

1

help please

What is the value of t?

Guest Sep 25, 2020

0

607

9

geometry problem

A quarter-circle (R) is inscribed in a square. A circle (r) is drawn. Find the ratio of r to R.

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Guest Sep 25, 2020

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329

0

help with algebra

Find constants A and B such that (3x - 5)/(x^2 - 4x + 3) = A/(x - 1) + B/(x - 3).

Guest Sep 25, 2020

0

554

1

+226

please help thank you!

Use the matrix to figure out and in the diagram below:

What are and

littlemixfan Sep 25, 2020

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494

1

geometry problem

Find angle CBE.

Guest Sep 25, 2020

0

632

1

+20

please help, thanks in advanced

Let A be a matrix, and let x and y be linearly independent vectors such that
Then we have that
for some scalars a and b. Find the ordered pair (a,b).

cooooooolgurl123 Sep 25, 2020

0

578

1

+20

please help thank you!

Let A be a matrix and x be a non-zero vector such that
Then we have that
some value of a. What is a equal to?

cooooooolgurl123 Sep 25, 2020

+2

439

1

+11

Please help?!?!

If $f(x) = x^2 - 3x + 4$, find the value of $f(\sqrt3 - \sqrt2)$.

bunny4life123 Sep 25, 2020

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552

1

+8

counting problem hElp

Mr Blue, Mr Black, Mr Green, Mrs White, Mrs Yellow and Mrs Red sit around a circular table for a meeting. Mr Black and Mrs White must not sit together. Calculate the number of different ways these six people can sit at the table without Mr Black and Mrs read more ..

kelisi Sep 25, 2020

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610

1

PLEASE HELP

A man walks (12x^2+11x+2) km for (3x+2) hours. What is his speed per hour?

Guest Sep 25, 2020

0

635

1

The number of visitors to a website in the first week is 65. The number of visitors each week is double the number of visitors the previous

The number of visitors to a website in the first week is 65. The number of visitors each week is double the number of visitors the previous week. What is the total number of visitors to the website in the first 7 weeks? Show your work.

Guest Sep 25, 2020

0

528

2

geometry problem

Find the area of the figure.

Guest Sep 25, 2020

0

493

1

please help

Help me with transformations

Guest Sep 25, 2020

0

599

1

im so lost

Find the missing coordinate to complete the ordered-pair solution to the given linear equation.

read more ..

Guest Sep 25, 2020

0

552

1

Algebra

Find the sum of the cubes of the solutions of x^2-12x+4=0.

Guest Sep 25, 2020

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