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Question 818221: Write the augmented matrix of the system to use the matrix method to solve the system.
x+2y-3z=15
2x-3y+z=-12
-x+y-3z=15
Click here to see answer by jsmallt9(3758)

Question 818279: Find Volume of sphere having radius 10 centimeter.
Click here to see answer by Alan3354(69443)

Question 818356: If a triangle has side lengths of 5 cm, 8 cm, and 10 cm, what type of triangle is it?
Right
Obtuse
Acute???????

Click here to see answer by Alan3354(69443)

Question 818456: Emma has half of her investments in a stock paying 10% dividends and the other half in a stock paying 15% interest. If her total annual interest is $510, how much does she have invested in each and total?
Click here to see answer by mananth(16946)

Question 818328: 9a-a-a
Click here to see answer by tommyt3rd(5050)

Question 818336: x-y=w what is a answer

Click here to see answer by tommyt3rd(5050)

Question 819137: If I invested $6,000 in 1993 at 3% interest, how much do I have twenty years later?
Click here to see answer by stanbon(75887)

Question 819573: In a rectangle, the length is 5 cm less than three times the width. If the perimeter is 26 cm, what is the length of the rectangle?
a. 4.5 cm
b. 7.25 cm
c. 7.75 cm
d. 8.5 cm
Click here to see answer by rfer(16322)

Question 820012: a 6ft ladder is placed against a wall with its base 2-ft from the wall.how far is the ladder up the wall?

Click here to see answer by TimothyLamb(4379)

Question 820493: what is the answer to this equation:
x over 12 = negative 4
from a helpless grandparent
Thanks
Click here to see answer by ewatrrr(24785)

Question 821257: A baker made thrice as many cakes as pies. He made 50 more cakes than pies. How many cakes did he make
Click here to see answer by LinnW(1048)

Question 821372: Jane doe invested part of her $37,000 bonus in a fund that paid a 10% profit and invested the rest in stock that suffered a 5% loss. Find the amount of each investment if her overal net profit was $1,000.
The amount invested at 10% is $
The amount invested in stock is $

Please help! Thank you!
Click here to see answer by stanbon(75887)

Question 821385: Shirley drove 75 miles averaging 50 mph. What was Shirley's time?
chose from
a. 1 1/2hr
b. 2/3hr
c. 64 1/2hr
d. 15hr
Click here to see answer by Alan3354(69443)

Question 821402: The linear function f(x)=340x +4562 provides a model for the number
of students attending a community college from 1995 to 2005. If x = 0
corresponds to 1995, use this model to find the number of students who
attended the college in 2001.
Click here to see answer by TimothyLamb(4379)

Question 821401: For the line 4x - 3y = 24, find the x- and y-intercepts.
Click here to see answer by TimothyLamb(4379)

Question 821386: -2 - 3[2 - 4(x + 1)] = -3 - 5[2 - (x - 5)]=
choose from
a. {-6}
b. {-11/2}
c. {-11/7}
d. {5}
Click here to see answer by rfer(16322)

Question 821411: solve
|3-4x|=|x+5|
Click here to see answer by josgarithmetic(39617)

Question 821683: 4(8n+3)-5=2(6n+8)+1
Click here to see answer by jsmallt9(3758)

Question 821819: [ please help me solve this question. 2x-4y=-1 and y=x-1. they are to the same problem. I can't find the answer. please help me ] NOTE: apparently the problem asks you to find the intersection of the two lines, if any.
Click here to see answer by ewatrrr(24785)

Question 821860: please help me solve this question. y=-3x & 2x-3y=22. they are to the same problem. I can't find the answer. I have to use substitution. I tried for 2 hours and couldn't find the answer. please help me
Click here to see answer by ewatrrr(24785)

Question 821908: please help me solve this question. "A group of 3 adults and 5 children pay a total of $52 for movie tickets. A group of 2 adults and 4 children pay a total of $38 for tickets. What is the cost of 1 adult ticket? What is the cost of 1 child ticket?" They are to the same problem. I can't find the answer. Please help me.
Click here to see answer by ankor@dixie-net.com(22740)

Question 822063: Can you show me an equation in standard form that models the possible combonations of Nickles and Dimes worth $8.50
Please?
Click here to see answer by TimothyLamb(4379)

Question 822063: Can you show me an equation in standard form that models the possible combonations of Nickles and Dimes worth $8.50
Please?
Click here to see answer by math-vortex(648)

Question 822219: How do you change a standard form equation in to slope intercept?

Click here to see answer by MathLover1(20849)

Question 822236: What is the equation of the line described below written in slope-intercept form?
the line passing through point (0, 4), perpendicular to the line whose equation is y =1/-4x

y = -4x
y = -4x + 4
y = x + 4
y = 4x + 4
Click here to see answer by stanbon(75887)

Question 822304: What is an equation of a line that passes through points (-1,2) and (5,2)?
Click here to see answer by richwmiller(17219)

Question 822817: Achieve $225,500 at 8.75% compounded continuously for 8 years, 145 days.
Click here to see answer by jim_thompson5910(35256)

Question 823034: the square of a number is 255greater than twice the number. what is the number?
Click here to see answer by faceoff57(108)

Question 823180: In what form is the following linear equation written?
y=9x+2
a.Rise-run
b.Standard
c.Slope-intercept
d.Point-slop
Click here to see answer by stanbon(75887)

Question 823180: In what form is the following linear equation written?
y=9x+2
a.Rise-run
b.Standard
c.Slope-intercept
d.Point-slop
Click here to see answer by TimothyLamb(4379)

Question 823155: what is 3(y+2)=21
Click here to see answer by jim_thompson5910(35256)

Question 823280: 1.)Write a quadratic equation in factored form to model the given problem. Be sure to write the entire equation.
The height of a triangle is 4 more than the base, and the area of the triangle is 6 square units. Find the length of the base. Let x = the length of the base.

2.)2.) 1/5x^2=x-4/5
{-1, -4}
{1, -4}
{1, 4}
Click here to see answer by stanbon(75887)

Question 823602: the sales tax on a table saw is $18.46
a.what is the purchase price of the table saw (before tax)if the sales tax rate is 7.1%?
b.find the total price of the table saw.
Click here to see answer by rfer(16322)

Question 823590: what is the sales tax on a jacket priced at $725 if the sales tax rate is 7%
Click here to see answer by rfer(16322)

Question 823968: Trisha needs 4 1/2 yards of fabric to do a project. She already has 2/3 of a yard of fabric.
What is the minimum amount of fabric she must buy to be able to complete her project?

3 5/6
4 1/12
4 1/6
Click here to see answer by Alan3354(69443)

Question 824078: A FAMILY INVESTS $6000 IN AN ACCOUNT PAYING 9% COMPOUNDED MONTHLY.HOW MUCH IS IN THE ACCOUNT AFTER 6 MONTHS.SIMPLIFY YOUR ANSWER. ROUND TO THE NEAREST CENT IF NEEDED.
Click here to see answer by stanbon(75887)

Question 824191: If the diagonals of a parallelogram are perpendicular, then the parallelogram must be a __________.
kite
square
rectangle
rhombus
Click here to see answer by TimothyLamb(4379)

Question 824220: Factor Completely:
(x+7)^2(x-5)-(x+7)(x-5)^2
Simplify as much as possible.
Click here to see answer by richwmiller(17219)

Question 824410: Hot dogs come packed 10 in a package. Hot dog buns come packed 8 in a package. If we want one hot dog for each bun for a picnic, with none left over, what is the least amount of each we need to buy?
Do we need to do GCF or LCM for this? Im not quite sure...
Click here to see answer by Alan3354(69443)

Question 824409: Yasmine is having a birthday party with snacks and activities for her guests. At one table, five people are sharing three quarters of a pizza. What equal sized portion of the pizza will each of the five people receive? Must Use a model (e.g. picture, number line, or manipulate materials) to represent the quotient.
Thank you!
Click here to see answer by josmiceli(19441)

Question 824407: Is the LCm of a pair of numbers ever less than both numbers? Explain with an example.
Click here to see answer by KMST(5328)

Question 824403: The Art Club wants to paint a rectangle shaped mural to celebrate the winners of the track and field meet. They designed a checkerboard for the mural where they will write the winners' names. The rectangle measures 432 inches in length and 360 inches in width. What is the side length of the largest square they can use to fill the checkerboard pattern completely without overlap or gaps? Please make it as simple as possible. Thank you :)
Click here to see answer by TimothyLamb(4379)

Question 824406: Is the LCM of a pair of numbers ever equal to one of the numbers? Explain with an example.
Click here to see answer by stanbon(75887)

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