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Exponential-and-logarithmic-functions/327302: y=-log4(x+4) State the equation of the line asymptotic to the graph ( if any).
1 solutions

Answer 234438 by Fombitz(13828) About Me  on 2010-07-30 22:26:39 (Show Source):
You can put this solution on YOUR website!

Asymptote at x=-4.


Exponential-and-logarithmic-functions/327309: where does this function cross the x-axis and describe the end behaviors?
f(x)=(x-1)^3 (x+1)
1 solutions

Answer 234437 by Fombitz(13828) About Me  on 2010-07-30 22:24:32 (Show Source):
You can put this solution on YOUR website!
f%28x%29=%28x-1%29%5E3+%28x%2B1%29=0
Use the zero product property.
Two solutions.
x-1=0
highlight%28x=1%29
.
.
.
x%2B1=0
highlight%28x=-1%29
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.
.
graph%28300%2C300%2C-5%2C5%2C-3%2C12%2C%28x-1%29%5E3%2A%28x%2B1%29%29


Linear-systems/327236: solve
4X + Y = 22 , 2X + 3Y = 16

1 solutions

Answer 234436 by Fombitz(13828) About Me  on 2010-07-30 22:22:24 (Show Source):
You can put this solution on YOUR website!
1.4X+%2B++Y+=+22
2.2X+%2B+3Y+=+16
Multiply eq. 2 by -2 and add to eq. 1,
4X%2BY-4X-6Y=22-32
-5Y=-10
highlight%28Y=2%29
Now use either equation to solve for x.
2X%2B6=16
2X=10
highlight%28X=5%29


Exponential-and-logarithmic-functions/327300: Graph the function. F(x)= 5^(2x-2)
1 solutions

Answer 234432 by Fombitz(13828) About Me  on 2010-07-30 22:18:44 (Show Source):


Linear-equations/327257: show a graph for the quadratic equation y=/-3x/.
1 solutions

Answer 234430 by Fombitz(13828) About Me  on 2010-07-30 22:17:40 (Show Source):
You can put this solution on YOUR website!
It's not quadratic x%5E2 it's a linear equation x.
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.
.
graph%28300%2C300%2C-10%2C10%2C-10%2C10%2Cabs%28-3x%29%29


Radicals/327250: I need help with step by step of simplifying this expression:
(2^6+3)(3^6+7)
1 solutions

Answer 234429 by Fombitz(13828) About Me  on 2010-07-30 22:16:19 (Show Source):


Geometric_formulas/327304: x2 + 5x + 100=180
1 solutions

Answer 234428 by Fombitz(13828) About Me  on 2010-07-30 22:12:14 (Show Source):
You can put this solution on YOUR website!
x%5E2+%2B+5x+%2B+100=180
x%5E2+%2B+5x+-80=0
Use the quadratic formula,
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%28-5+%2B-+sqrt%28+5%5E2-4%2A1%2A%28-80%29+%29%29%2F%282%2A1%29+
x+=+%28-5+%2B-+sqrt%28+25%2B320+%29%29%2F2+
highlight%28x+=+%28-5+%2B-+sqrt%28+345+%29%29%2F2+%29


Probability-and-statistics/327230: Instructions: For each exercise, use Excel, or MegaStat to make an attractive, well-labeled time-series line chart. Adjust the Y-axis scale if necessary to show more detail (since Excel usually starts the scale at zero). If a fitted trend is called for, use Excel’s option to display the equation and R2 statistic (or MAPE, MAD, and MSD in MINITAB). Include printed copies of all relevant graphs with your answers to each exercise.
(a) Plot the data on full-time mathematics graduate students. (b) Would a fitted trend be helpful? Explain. (c) Make a forecast for 2003, using a trend model of your choice (or a judgment forecast).
MathGrads
Full-Time Mathematics Graduate Students, 1993–2002
Year Total
1993 10,525
1994 10,185
1995 9,761
1996 9,476
1997 9,003
1998 8,791
1999 8,838
2000 9,637
2001 9,361
2002 9,972

1 solutions

Answer 234363 by Fombitz(13828) About Me  on 2010-07-30 16:53:12 (Show Source):
You can put this solution on YOUR website!
Open up EXCEL.
Make one column with the year data.
Right next to it make another column with the total data.
Highlight the data.
Click on the Chart Wizard, pick scatter plot.
Once the chart is complete, right click on the data point and choose Add trendline.
Choose Linear.
In the Options tab, choose Display equation .... and Display R%5E2 value.


Equations/327205: perform the operation and simplify
a+3/a^2-a-2 - a-4/a^2-2a-3
1 solutions

Answer 234361 by Fombitz(13828) About Me  on 2010-07-30 16:49:54 (Show Source):
You can put this solution on YOUR website!

Use a common denominator, %28a-2%29%28a%2B1%29%28a-3%29






Quadratic_Equations/327152: Please help me solve the equation: A=1/2h(b+c)f or h
1 solutions

Answer 234360 by Fombitz(13828) About Me  on 2010-07-30 16:40:02 (Show Source):


real-numbers/327161: Prove: For all real numbers a,b and c, if a+c=b+c, then a=b
1 solutions

Answer 234359 by Fombitz(13828) About Me  on 2010-07-30 16:38:21 (Show Source):
You can put this solution on YOUR website!
You can't prove it.
It an identity that forms the foundation of mathematics.
.
.
.
It's like saying prove in baseball that 3 strikes are an out.
You can't do it, it's given as a rule.


real-numbers/327209: can you give me some number and number system question ?
need now !!!!!!!!!!!!!!11
1 solutions

Answer 234358 by Fombitz(13828) About Me  on 2010-07-30 16:34:14 (Show Source):
You can put this solution on YOUR website!
Can you be more specific?


Quadratic_Equations/327120: The percentage of the U.S. population that is foreign born are listed in the table
year / Percent
_______________
1950 / 6.9
1960 / 5.4
1970 / 4.8
1980 / 6.2
1990 / 7.9
2000 / 10.4
Let f(t) represent the percentage of the U.S. population that is foreign born t years since 1950. Find a reasonable quadratic model for f(t).

1 solutions

Answer 234357 by Fombitz(13828) About Me  on 2010-07-30 16:33:10 (Show Source):
You can put this solution on YOUR website!
I plotted the points in Excel and use their polynomial trendline fitting routine.
y=0.0052x%5E2-20.521x%2B20195
where x is the year, y is the percentage.
R%5E2=0.986


Graphs/327137: How to Graph f: x---> |x|+2 with domain D={-2,-1,0,1,2}
1 solutions

Answer 234355 by Fombitz(13828) About Me  on 2010-07-30 16:28:27 (Show Source):
You can put this solution on YOUR website!
x=-2, abs%28x%29%2B2=2%2B2=4: (-2,4)
x=-1, abs%28x%29%2B2=1%2B2=3: (-1,3)
x=0, abs%28x%29%2B2=0%2B2=2: (0,2)
x=1, abs%28x%29%2B2=1%2B2=3: (1,3)
x=2, abs%28x%29%2B2=2%2B2=4: (2,4)
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.
.



Functions/327226: If f(x)=1-3x and g(x)= 1/(x^2+1), find f(g(0)) and g(f(1))
1 solutions

Answer 234353 by Fombitz(13828) About Me  on 2010-07-30 16:25:37 (Show Source):


Equations/327143: a+3/a^2-a-2 - a4/a^2-2a-3
1 solutions

Answer 234352 by Fombitz(13828) About Me  on 2010-07-30 16:23:01 (Show Source):
You can put this solution on YOUR website!
In the second term "a4", does that mean a%5E4 or did you forget a {+/-) operator?


Inequalities/327140: please help me solve
-1< x-2/4 <4
1 solutions

Answer 234351 by Fombitz(13828) About Me  on 2010-07-30 16:21:06 (Show Source):
You can put this solution on YOUR website!
-1%3C+%28x-2%29%2F4+%3C4
-4%3C+%28x-2%29%3C16 <--- Multiply by 4.
highlight%28-2%3C+x%3C18%29 <--- Add 2.


Linear-systems/327203: find an equation in standard form of the line:
a. through (2,-2) and (4,4)
b. perpendicular to y=x+5 and through (0,8)
1 solutions

Answer 234350 by Fombitz(13828) About Me  on 2010-07-30 16:18:52 (Show Source):
You can put this solution on YOUR website!
a) Find the slope.
m=%28y2-y1%29%2F%28x2-x1%29=%284-%28-2%29%29%2F%284-2%29=6%2F2=3
Now use the slope intercept form, y=mx%2Bb
y=3x%2Bb
and use either point to solve for b.
4=3%284%29%2Bb
4=12%2Bb
b=-8
highlight%28y=3x-8%29
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.
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Perpendicular lines have slopes that are negative reciprocals.
m1%2Am2=-1
1%2Am2=-1
m2=-1
y=-x%2Bb
Use the point (0,8) to solve for b.
8=0%2Bb
b=8
highlight_green%28y=-x%2B8%29


Equations/327195: How do you solve this? 6+4(9+6)-8/4+8=
1 solutions

Answer 234349 by Fombitz(13828) About Me  on 2010-07-30 16:13:56 (Show Source):
You can put this solution on YOUR website!
Use PEMDAS for order of operations.
P(parentheses):+6%2B4%289%2B6%29-8%2F4%2B8=+6%2B4%2815%29-8%2F4%2B8
No E(exponentiation)
MD(mult/division): 6%2B4%289%2B6%29-8%2F4%2B8=6%2B60-2%2B8
AS(add/subtraction):+6%2B4%289%2B6%29-8%2F4%2B8=72


Linear-equations/327221: 10-2y=6x
1 solutions

Answer 234347 by Fombitz(13828) About Me  on 2010-07-30 16:11:43 (Show Source):
You can put this solution on YOUR website!
Yes, but what's the question!?


Linear-equations/327186: graph the following function f(x)= 1/x-4
1 solutions

Answer 234346 by Fombitz(13828) About Me  on 2010-07-30 16:11:22 (Show Source):


Equations/327197: Please show me the solution of the following problem: Two people start driving towards each other, starting from two towns 100 miles apart. If one person travels 30 miles per hour and the other person travels 20 miles per hour, how long will it take until they meet?
please send to mague_sarming@yahoo.com
1 solutions

Answer 234345 by Fombitz(13828) About Me  on 2010-07-30 16:10:48 (Show Source):
You can put this solution on YOUR website!
Rate*Time=DIstance
First person:
30%2At=D1
Second person:
20%2At=D2
Find t+when+%7B%7B%7BD1%2BD2=100
30%2At%2B20%2At=100
50t=100
t=2hours.


Equations/327201: factor if possible
7y^4-7
1 solutions

Answer 234343 by Fombitz(13828) About Me  on 2010-07-30 16:08:44 (Show Source):


Trigonometry-basics/327204: how do you solve cosecant, secnt, cotangent problems,such as
b=3 c=5 and cosΘ=?
please explain the process and how you could solve "WITHOUT" using a TI-83 calucator!!!!!!
1 solutions

Answer 234342 by Fombitz(13828) About Me  on 2010-07-30 16:07:58 (Show Source):
You can put this solution on YOUR website!
If I knew what b and c where, there might be a chance to explain.
Please elaborate and re-post.
Attach a figure if possible.


Mixture_Word_Problems/327202: factor if possible
2u^2 + 14u + 24
1 solutions

Answer 234341 by Fombitz(13828) About Me  on 2010-07-30 16:06:38 (Show Source):


Probability-and-statistics/327207: The demand for apple pies at the bakery is shown in the table. What is the probability that the demand next Saturday will be 9 apple pies or more?
Demand for Apple Pies on Saturday/ Probability
4 / .01
5 / .03
6 / .07
7 / .12
8 / .25
9 / .26
10 / .17
11 / .05
12 / .04
= 1.00
a. .26
b. .74
c. .75
d. .48
e. .52

1 solutions

Answer 234340 by Fombitz(13828) About Me  on 2010-07-30 16:05:57 (Show Source):
You can put this solution on YOUR website!
P(9 or 10 or 11 or 12)=P%289%29%2BP%2810%29%2BP%2811%29%2BP%2812%29=.26%2B.17%2B.05%2B.04=0.52


Mixture_Word_Problems/327218: How much of an 18% solution of sulfuric acid should be added to 360 mL of a 10% solution to obtain a 15% solution? Thank you for all your help.
1 solutions

Answer 234339 by Fombitz(13828) About Me  on 2010-07-30 16:04:19 (Show Source):
You can put this solution on YOUR website!
Let X be the amount of 18% solution.
18X%2B10%28360%29=15%28X%2B360%29
18X%2B3600=15X%2B5400
3X=1800
highlight_green%28X=600%29
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.
.
600 ml of 18% solution.


Complex_Numbers/327215: simplify complex fraction
p^2-25/9pt /p^2+7p+10/3pt
1 solutions

Answer 234338 by Fombitz(13828) About Me  on 2010-07-30 16:02:24 (Show Source):
You can put this solution on YOUR website!
Dividing by a fraction is the same as multiplying by its reciprocal,





Linear-systems/327213: Solve by the addition method.
x-y=15
x+y=7
1 solutions

Answer 234336 by Fombitz(13828) About Me  on 2010-07-30 15:58:55 (Show Source):
You can put this solution on YOUR website!
Add the equations to eliminate y.
x-y%2Bx%2By=15%2B7
2x=22
highlight%28x=11%29
Then use either equation to solve for y.
11%2By=7
highlight%28y=-4%29


Mixture_Word_Problems/327212: f(x)= -2/3x-5
for what value of f(x)= 5
1 solutions

Answer 234335 by Fombitz(13828) About Me  on 2010-07-30 15:56:59 (Show Source):


Equations/327210: find the slope and the y intercept
7x+24=-42y
1 solutions

Answer 234334 by Fombitz(13828) About Me  on 2010-07-30 15:55:50 (Show Source):
You can put this solution on YOUR website!
Convert to slope-intercept form, y=mx%2Bb
-42y=7x%2B24
y=-x%2F6-4%2F7
.
.
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Slope: m=-1%2F6
Intercept: b=-4%2F7