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656

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The equation of the line passing through $(1,8)$ and $(5,6)$ can be expressed in the form \[\frac{x}{a} + \frac{y}{b} = 1.\] Find $a$.

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Confusedperson Jun 30, 2018

503

+194

Plz HElp

Problem 1: Find the equation of the line passing through the points (-3,-16) and (4,5). Enter your answer in y = mx + b form.

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Confusedperson Jun 30, 2018

2419

Help on Counting!

For some integers that are not palindromes, like 91, a person can create a palindrome by repeatedly reversing the number and adding the original number to its reverse. For example, . Then , which is a palindrome, so 91 takes two steps read more ..

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Guest Jun 30, 2018

371

Calc help

A particle is moving with the given data. Find the position of the particle.
a(t) = t2 − 3t + 9, s(0)=0, s(1)=20

Guest Jun 30, 2018

486

+214

2 questions

Help

chitsuii Jun 30, 2018

516

+214

Linear equations

Slope intercept equation represents a line that passes through the point (1, -5) and is parallel to the line y= -4x -5

chitsuii Jun 30, 2018

452

+214

Linear equations

Write an equation of the line that is parallel to the given and passes through the given point. Express your answer in slope intercept form.
y=-2x +6, ( 0,-2)

chitsuii Jun 30, 2018

474

+214

Linear equations

1. Write an equation of a line that has a slope of -5 and y- intercept 2
2. Slope= -6, y-intercept =12. Express your answer in slope intercept form

chitsuii Jun 30, 2018

1211

Given \begin{align} px+qy+rz&=1,\\ p+qx+ry&=z,\\ pz+q+rx&=y,\\ py+qz+r&=x,\\ p+q+r&=-3, \end{align}

Given \begin{align*}
px+qy+rz&=1,\\
p+qx+ry&=z,\\
pz+q+rx&=y,\\
py+qz+r&=x,\\ <#> p+q+r&=-3, <#> \end{align*}
find $x+y+z$

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Guest Jun 30, 2018

498

Not very sure how to do this one either...

Rhombus ABCD has perimeter 148, and one of its diagonals has length 24. How long is the other diagonal?

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FluffyDinosaur Jun 30, 2018

799

Hi, I don't understand this problem. Please help.

There are girls and boys in a chess club. The club holds a round-robin tournament in which every player plays against every other player exactly once.
If Anita is one of the club members, what fraction of all games at the tournament does Anita play in? read more ..

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FluffyDinosaur Jun 30, 2018

1432

+194

Python coding question? //Hard//

The file classgrades.txt contains student data from a class. Each line of the file consists of a student's last name, a space, and a sequence of integers (separated by spaces), which represent scores on assignments.
Write a Python program to read the read more ..

off-topic

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Maplesnowy Jun 30, 2018

584

+586

Rate Problem

Frank can mow his yard in 45 minutes, but Joe can mow his yard, which is 40% larger than Frank's, in an hour. How long would it take them, working together, to mow both lawns? Express your answer as mm:ss, where mm is the number of minutes and ss is read more ..

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xXxTenTacion Jun 30, 2018

3916

+76

Geometry

In the diagram below, triangle ABC is inscribed in the circle and AC = AB . The measure of angle BAC is 42 degrees and segment ED is tangent to the circle at point C. What is the measure of angle ACD?

read more ..

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codehtml127 Jun 30, 2018

1091

Cylinders - Geometry Question

A cylindrical can that is six inches high has a label that is $60\pi$ square inches in area and exactly covers the outside of the can excluding the top and bottom lids. What is the radius of the can, in inches?

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Guest Jun 30, 2018

1720

Pyramids Geometry Question

A regular tetrahedron is a pyramid with four faces, each of which is an equilateral triangle.

Let $V$ be the volume of a regular tetrahedron whose sides each have length $1$. What is the exact value of $V^2$ ? read more ..

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Guest Jun 30, 2018

718

Surface Area

Ten unit cubes are glued together as shown. How many square units are in the surface area of the resulting solid?

read more ..

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Guest Jun 30, 2018

1109

Geometry Prisms Question

A cube of edge length $s > 0$ has the property that its surface area is equal to the sum of its volume and five times its edge length. Compute the sum of all possible values of $s$.

read more ..

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Guest Jun 30, 2018

2097

Geometry Question

In the circle with center $Q$, radii $AQ$ and $BQ$ form a right angle. The two smaller regions are tangent semicircles, as shown. The radius of the circle with center $Q$ is 14 inches. What is the radius of the smaller semicircle? Express your answer as read more ..

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Guest Jun 30, 2018

1921

Geometry Question

The area of the semicircle in Figure A is half the area of the circle in Figure B. The area of a square inscribed in the semicircle, as shown, is what fraction of the area of a square inscribed in the circle? Express your answer as a common fraction. read more ..

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Guest Jun 30, 2018

3190

+19

Geometry Problem

Point D lies on side AC of equilateral triangle ABC such that the measure of angle DBC is 45 degrees. What is the ratio of the area of triangle ADB to the area of triangle CDB? Express your answer as a common fraction in simplest radical form. read more ..

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Unavailable Jun 30, 2018

778

Linear equations

A rental car costs $25 plus a fixed charge per mile driven. The total charge for 320 miles of use was $89. Write an equation for the cost, C (in dollars), in terms of the miles driven, X.

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Guest Jun 30, 2018

757

HELP

How many ways are there to put 6 balls in 3 boxes if the balls are distinguishable but the boxes are not?

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Guest Jun 30, 2018

761

+214

Linear equation

a rental car costs $25 plus a fixed charge per mile driven. The total charge for 210 miles of use was $67. Write an equation for the cost, C (in dollars), in terms of the miles driven, X.

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chitsuii Jun 30, 2018

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Help on Counting!

Calc help

2 questions

Linear equations

Linear equations

Linear equations

Given \begin{align} px+qy+rz&=1,\\ p+qx+ry&=z,\\ pz+q+rx&=y,\\ py+qz+r&=x,\\ p+q+r&=-3, \end{align}

Not very sure how to do this one either...

Hi, I don't understand this problem. Please help.

Python coding question? //Hard//

Rate Problem

Geometry

Cylinders - Geometry Question

Pyramids Geometry Question

Surface Area

Geometry Prisms Question

Geometry Question

Geometry Question

Geometry Problem

Linear equations

HELP

Linear equation

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