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April 21, 2014

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

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Algebra II
-4?
Friday, February 7, 2014 at 1:52pm

Algebra II
the graph of a function which has a root of multiplicity 2 is tangent to the x-axis there, rather than crossing it. So, pick the choice which reflects the fact that f(x) is tangent to the x-axis at (0,0)
Friday, February 7, 2014 at 1:46pm

Algebra II
i believe it could be A or C, i'm not sure though :(
Friday, February 7, 2014 at 1:41pm

Algebra II
It has a graph but i cant paste it on here, could you guide me through plz Which is a root of f(x) = 0 with a multiplicity of 2? -4 -3 3 4
Friday, February 7, 2014 at 1:26pm

Pre-algebra
David must choose a number between 49 and 95 that is a multiple of 4, 6, and 8. Write all the numbers that he could choose. If there is more than one number, separate them with commas.
Friday, February 7, 2014 at 10:55am

algebra
A man and a woman's ages total 98. He is twice as old as she was when he was her age now. What are their ages?
Friday, February 7, 2014 at 9:27am

Algebra 2
18x^3+9x^2 - (2x+1) 9x^2(2x+1) - (2x+1) (9x^2-1)(2x+1) (3x+1)(3x-1)(2x+1)
Friday, February 7, 2014 at 5:34am

Algebra 1
assuming the usual carelessness with parentheses, I get (2x+10)/(x+5) = 2(x+5)/(x+5) = 2 (x^2-25)/(3x-15) = (x+5)(x-5) / 3(x-5) = (x+5)/3 (x^2+4x)/(x^2-9x) = x(x+4) / x(x-9) = (x+4)/(x-9) (n^2+7n+10)/(n^2+2n-15) = (n+2)(n+5) / (n-3)(n+5) = (n+2)/(n-3)
Friday, February 7, 2014 at 5:24am

algebra 2
e = c/3 p = e/2 e+c+p = 1800 c/3 + c + c/6 = 1800 3c/2 = 1800 c=1200 e=400 p=200
Friday, February 7, 2014 at 5:15am

algebra 2
three computers were on sale model E computer was priced at 1/3 the price model C and model P was priced at 1/2 the price of model E on business bought one of each type of computers on sale and paid a total $1800
Friday, February 7, 2014 at 12:11am

algebra
12$
Thursday, February 6, 2014 at 9:57pm

algebra
t
Thursday, February 6, 2014 at 9:44pm

Algebra 1
Simplify each expression. 1. 2x + 10/x+5 2.x^2 - 25/3x - 15 3. x^2 + 4x/x^2 - 9x 4. n^2 + 7n + 10/ n^2 + 2n - 15 Please explain how to do these I don't understand!
Thursday, February 6, 2014 at 9:21pm

Algebra 2
The projected population in thousands for a city over the next several years can be estimated by the function P(x)= x^3 + 2x^2 - 8x + 520, where x is the number of years since 2005. Use synthetic substitution to estimate the population. Also could anyone help me with the ...
Thursday, February 6, 2014 at 6:46pm

Algebra
Your answers are correct!
Thursday, February 6, 2014 at 6:19pm

Algebra 2
v = Vi - g t h = hi + Vi t - 4.9 t^2 after 3 seconds h = 40 + 10 (3) - 4.9*9 = 25.9 meters above ground on the way down 0 = 40 + 10 t - 4.9 t^2 4.9 t^2 - 10 t - 40 = 0 t = [ 10 +/- sqrt(100 +784) ] / 9.8 take big t choice (on the way down) t = 4.05 seconds
Thursday, February 6, 2014 at 5:58pm

Algebra 2
Yoko threw a stone upward at a speed of 10m/sec while standing on a cliff 40 m above ground. A. What was the height of the stone after 3 seconds? B. Estimate how long it took for the stone to touch the ground
Thursday, February 6, 2014 at 5:18pm

9th grade algebra/Ms Sue
22
Thursday, February 6, 2014 at 3:37pm

9th grade algebra
10280 * 1.01^5
Thursday, February 6, 2014 at 2:38pm

Algebra 2
280/400 = 0.7 196/280 = 0.7 137.2/196 = 0.7 Looks like the height on the nth bounce is 400*0.7^n
Thursday, February 6, 2014 at 2:37pm

Algebra
correct
Thursday, February 6, 2014 at 2:26pm

Algebra
What is the order of 5 X 10^-8, 7 X 10^-9, 3 X 10^-9, 8 X 10^4 from least to greatest? Is it 3 X 10^-9, 7 X 10^-9, 5 X 10^-8, 8 X 10^4?
Thursday, February 6, 2014 at 12:56pm

Algebra
A lab is growing bacteria in a culture dish. The amount of bacteria in the dish doubles every 3 hours. Initially, there are 500 bacteria in the dish. How many are in the dish after 9 hours? My answer: 4000 -(5)^-1 My answer: -1/5
Thursday, February 6, 2014 at 12:22pm

Algebra 2
A ball is dropped from 400 ft what is the height of the ball on the 6th bounce? 1 bounce =280 ft 2 bounce= 196 ft 3 bounce = 137.2 How do I figure this out?
Thursday, February 6, 2014 at 11:56am

9th grade algebra
suppose the population of deer in a state is 10,280 and is growing 1% each year. predict the population after 5 years.
Thursday, February 6, 2014 at 11:47am

Algebra 1
a + 2b = 8 a - b = -4 Multiply the second equation by -1. -a + b = 4 Add the two equations: 3b = 12 b = 4 Put 4 into one equation: a + 2(4) = 8 a + 8 = 8 a = 0 He caught 0 ants and 4 beetles.
Thursday, February 6, 2014 at 12:59am

Algebra 1
Sam collects insects. However, he only collects ants and beetles. One night while collecting insects for his collection, Sam had an unproductive hunt. The number of ants plus twice the number of beetles was only eight. The difference between the number of ants and beetles was...
Wednesday, February 5, 2014 at 11:19pm

algebra
w-9 = m+9 (m-9)/(w+9) = 1/2 since m = w-18, 2(w-18-9) = w+9 2w-54 = w+9 w = 63
Wednesday, February 5, 2014 at 8:20pm

algebra
If Will gives Molly $9 dollars he will have the same amount of money as her. If Molly give Will $9, the ratio of money she has to the money will has will be 1:2. How much money does will have in the beginning?
Wednesday, February 5, 2014 at 8:18pm

algebra
a. 775 b.1250 c.60 1/5
Wednesday, February 5, 2014 at 8:03pm

algebra
Susan is driving to Mount Shasta.On her map,she is distance of 7 3/4 inches away.The scale of the map is 1/2 inch is 50 miles. a.) how far must susan travel to reach her destination b.) using the scale,how far is philly,pennslvania from miami florida if it is 12 1/2 inches ...
Wednesday, February 5, 2014 at 7:08pm

algebra
3n + 1 = 7
Wednesday, February 5, 2014 at 7:00pm

algebra
One more than three times a number is 7 as an equation
Wednesday, February 5, 2014 at 6:56pm

algebra
ah - I see this is a rehash of √2 + √(1+k) = √5 √(1+k) = √5-√2 1+k = 5-2√10+2 k = 6-2√10
Wednesday, February 5, 2014 at 6:13pm

algebra
unless it's √2 + √(1+k) = 2.24 √(1+k) = .8258 1+k = .6819 k = -.3181 check: √2 + √.6819 = 2.24
Wednesday, February 5, 2014 at 5:31pm

Algebra
3 1/4 +n=9 1/12 n = 8 13/12 - 3 3/12 n = 5 10/12 = 5 5/6
Wednesday, February 5, 2014 at 5:17pm

Algebra
3 1/4 +n=9 1/12
Wednesday, February 5, 2014 at 5:09pm

Algebra
Thanks!
Wednesday, February 5, 2014 at 4:33pm

Algebra
Chessville : 50000(1.07)^n Checkervill: 70000(.96)^n when is 50000(1.07)^n = 70000(.96)6n 5(1.07)^n = 7(.96)^n log both sides and use rules of logs log5 + nlog1.07) = log7 + nlog.96 nlog1.07 - nlog.96 = log7 - log5 n(log1.07 -log.96) = log7 - log5 n = ( log7 - log5)/(log1.07 -...
Wednesday, February 5, 2014 at 4:18pm

algebra
1.4142 + 1 + k = 2.24 2.4142 + k = 2.24 k = -0.1742
Wednesday, February 5, 2014 at 3:50pm

algebra
The questions is like this: sqr(2) + sqr(1), and the asnwer is 1 + sqr(2), or in decimal form: 2.4142
Wednesday, February 5, 2014 at 3:50pm

algebra
square route of 2 plus the square route of 1 plus k = 2.24
Wednesday, February 5, 2014 at 3:43pm

Algebra
On Jan 1, 2010, Chessville has a population of 50,000 people. Chessville then enters a period of population growth. Its population increases 7% each year. On the same day, Checkersville has a population of 70,000 people. Checkersville starts to experience a population decline...
Wednesday, February 5, 2014 at 3:18pm

Algebra 11
A sudden debt pay off
Wednesday, February 5, 2014 at 3:15pm

algebra
16x-28
Wednesday, February 5, 2014 at 1:39pm

Algebra 1
Thank you Steve~!
Wednesday, February 5, 2014 at 1:36pm

Algebra 1
p^0 = 1, so mn^-4/p^0q^-2 = (m/n^4) / (1/q^2) = mq^2/n^4 1/(2 (-2)^-4 (4)^2) 1/(2 (1/16) (16)) 1/2 Note that (-2)^4 = (-2)(-2)(-2)(-2) = +16
Wednesday, February 5, 2014 at 1:34pm

Algebra
Actually my answer is 3.11.
Wednesday, February 5, 2014 at 1:28pm

Algebra 1
Actually I only need help with the second problem,and the 7th problem, Simplify. mn^-4/p^0q^-2 Evaluate 1/2a^-4b^2 for a=-2 and b=4.
Wednesday, February 5, 2014 at 1:26pm

Algebra
On Jan 1, 2010, Chessville has a population of 50,000 people. Chessville then enters a period of population growth. Its population increases 7% each year. On the same day, Checkersville has a population of 70,000 people. Checkersville starts to experience a population decline...
Wednesday, February 5, 2014 at 1:22pm

algebra
Since (x+a)^2 = x^2+2ax+a^2, you want 2a=12
Wednesday, February 5, 2014 at 1:08pm

Algebra 1
Plz help me with the following problems. Simplify. 5^-1(3^-2) Simplify. mn^-4/p^0q^-2 Write a scientific notation. 0.0042 Write in standard notation. 6.12*10^3 Simplify. Write in scientific notation. 0.5(8 * 10^5) Simplify. Write in scientific notation. (9 * 10^-3)^2 Evaluate ...
Wednesday, February 5, 2014 at 1:06pm

algebra
what value makes the polynomial factor as a perfect square x+12+?
Wednesday, February 5, 2014 at 9:14am

Basic Linear Algebra
The function is zero when it crosses the x axis so 0 = 3 x - 12 12 = 3 x x = 4 ---------------------------- When it crosses the y axis x = 0 so f(0) = 5(0) + 1 f(0) = 1
Wednesday, February 5, 2014 at 6:36am

Basic Linear Algebra
1. At what point does the graph of f(x)=3x-12 crosses the x-axis? 2.At what point does the graph of f(x)=5x+1 crosses the y-axis?
Wednesday, February 5, 2014 at 6:24am

math
just solve for t when h=0 good old algebra I
Wednesday, February 5, 2014 at 6:16am

Basic Algebra
2 y = 4 x = 10 y = 2 x - 5 so m = slope = 2
Wednesday, February 5, 2014 at 6:09am

Basic Algebra
the slope of the given line is 2 perpendicular lines have a slope which is the negative reciprocal.
Wednesday, February 5, 2014 at 6:01am

aka algebra
5.6/3.2 = x/5
Wednesday, February 5, 2014 at 5:58am

Basic Algebra
What is the slope of any line perpendicular to the line 4x-2y=10 ?
Wednesday, February 5, 2014 at 5:54am

Basic Algebra
What is the slope of any line perpendicular to the line 4x-2y=10 ?
Wednesday, February 5, 2014 at 5:49am

Algebra 2
Jane, from your wording it is not clear if the first card drawn is returned to the deck or not. Suppose it is not returned could be F4 or 4F = (12/52)(4/40) + (4/52)(12/40) = 3/130 + 3/130 = 3/65 Your answer suggests that the card is returned after it is drawn. Then it would ...
Tuesday, February 4, 2014 at 8:47pm

Algebra - eh?
since you give no values for r and h, I'll have to trust your calculation.
Tuesday, February 4, 2014 at 7:27pm

Algebra 2
Do I add them and that's it or do I do something else?
Tuesday, February 4, 2014 at 7:20pm

Algebra 2
oops. Guess I didn't read it right. Good catch.
Tuesday, February 4, 2014 at 7:16pm

Algebra 2
Theres 12 face cards (4 queens, 4 kings, and 4 jacks) and 4 fours. What would you do with 12/52 and 4/52?
Tuesday, February 4, 2014 at 7:13pm

Algebra 2
Anonymous -- I think you forgot the 4.
Tuesday, February 4, 2014 at 7:13pm

Algebra 2
there are 13 numbers, and 3 of them are face cards. So, 3/13 would be the answer. Maybe you counted aces as face cards.
Tuesday, February 4, 2014 at 7:10pm

Algebra 2
How would you find the probability of drawing a face card and a 4 out of a standard deck of 52 cards? I got 4/13 but I don't think its right.
Tuesday, February 4, 2014 at 7:09pm

Algebra 2
Can someone please explain how to do this problem? The probability that it will rain today is 65%, and the probability that it will rain tomorrow is 25%. The probability that it will rain both days is 35%. What is the probability that it will rain today or tomorrow?
Tuesday, February 4, 2014 at 6:48pm

Algebra
The surface area of a cylinder is approximately? a-- 151 m sq b-- 273 m sq c-- 179 m sq d-- 302 m sq my answer is Surface Area of a Cylinder = 2 pi r 2 + 2 pi r h c
Tuesday, February 4, 2014 at 5:58pm

Algebra
3,2
Tuesday, February 4, 2014 at 5:51pm

algebra
Now I showed you how to do compounding. Do it.
Tuesday, February 4, 2014 at 1:49pm

algebra
$3,300 principal earning 4%, compounded annually, after 3 years.
Tuesday, February 4, 2014 at 1:44pm

algebra
19,900 *1.03^10 = 26,744
Tuesday, February 4, 2014 at 1:41pm

algebra
2. What is the factored form of x x^2 + 6x + 8? (1 point) (x + 5)(x + 3) (x + 4)(x + 2) <------ 2*4 = 8 (x + 7)(x + 1) (x + 3)(x + 3) 3. What is the factored form of x x^2 – 7x + 12? (1 point) (x – 5)(x – 3) (x – 6)(x – 1) (x – 5)(x – 2) (...
Tuesday, February 4, 2014 at 1:39pm

algebra
1. Which number makes this equation true? I assume you mean v^2 + 10v + 16 = (v + 8)(v + ?) (1 point) 2 <-------------- 4 6 8
Tuesday, February 4, 2014 at 1:37pm

algebra
suppose that the population of deer in a state is 19,900 and is growing 3% each year. predict the population after 10 years.
Tuesday, February 4, 2014 at 1:36pm

algebra
1. Which number makes this equation true? v 2 + 10v + 16 = (v + 8)(v + ?) (1 point) 2 4 6 8 2. What is the factored form of x 2 + 6x + 8? (1 point) (x + 5)(x + 3) (x + 4)(x + 2) (x + 7)(x + 1) (x + 3)(x + 3) 3. What is the factored form of x 2 – 7x + 12? (1 point) (x &#...
Tuesday, February 4, 2014 at 1:27pm

Math-Algebra
McKenna, you are right. note that 45% is 1/4 of the way from 40 to 60, so only 1/4 of the total is the higher concentration. Just sayin' . . . As for Julie, she had 35-18=17 visits left
Tuesday, February 4, 2014 at 12:22pm

Math-Algebra
Julie bought a card good for 35 visits to a health club and began a workout routine. After y visits, she had y fewer than 35 visits remaining on her card. After 18 visits, how many visits did she have left?
Tuesday, February 4, 2014 at 10:55am

Math-Algebra
The answer I got was 9 gal of the 40% alcohol solution and 3 gal of the 60% alcohol solution is needed. Am I right?
Tuesday, February 4, 2014 at 6:53am

Math-Algebra
if x lbs of 40%, then .40x + .20(10000-x) = .25(10000)
Tuesday, February 4, 2014 at 5:24am

Math-Algebra
if she uses x gallons of 40%, then .40x + .60(12-x) = .45(12)
Tuesday, February 4, 2014 at 5:23am

Math-Algebra
Meg has a solution that is 40% alcohol and another solution that is 60% alcohol. If Meg wants 12 gal of a solution that is 45% alcohol, how much of the two solutions must be mixed?
Tuesday, February 4, 2014 at 3:06am

Math-Algebra
DMF Feeds has two different types of cattle feed containing crude protein in the amount of 45% and 20% respectively. How many of each type must a feed lot manager mix together to obtain 10000lbs of a mixture that is 25% protein?
Tuesday, February 4, 2014 at 3:04am

Algebra 2
#2: ok, if you meant to say "or" a 4 #5: ace and spade (the ace of spades): 1/52 ace or spade: 4/13
Tuesday, February 4, 2014 at 12:25am

Algebra/Geometry
Identify the sequence of transformations that maps quadrilateral abcd onto quadrilateral a"b"c"d" Answers 180 rotation around the origin; reflection over the x-axis translation (x,y) -> (x - 2, y + 0); reflection over the line x = -1 enlargement; ...
Monday, February 3, 2014 at 10:59pm

Algebra 1 (Reiny)
y^10 / y^1 = y^10 y^-1 = y^9
Monday, February 3, 2014 at 10:26pm

Algebra 1 (Reiny)
Simplify. y^10/y My answer: 1.
Monday, February 3, 2014 at 10:12pm

Algebra 2
Can someone please check my answers? A card is randomly drawn from a standard deck of 52 cards. Find the probability of drawing the indicated card. 1.Not an ace. =12/13 2.A face card and a four. =4/13 3.A heart or a diamond. =1/2 4.A six or a seven. = 2/13 5.An ace and a spade...
Monday, February 3, 2014 at 9:44pm

Algebra 1 (Reiny)
4 * 3^4* 2^8/ (2^9 * 3^5 ) I think you mean it that way 4 /(2*3) 2/3
Monday, February 3, 2014 at 9:43pm

Algebra 1 (Reiny)
Simplify. 2^2 x 3^4 x 4^4/2^9 x 3^5 My answer: 256/384?
Monday, February 3, 2014 at 9:08pm

Algebra 2
Can someone please check my answers? A card is randomly drawn from a standard deck of 52 cards. Find the probability of drawing the indicated card. 1.Not an ace. =12/13 2.A face card and a four. =4/13 3.A heart or a diamond. =1/2 4.A six or a seven. = 2/13 5.An ace and a spade...
Monday, February 3, 2014 at 8:08pm

Algebra
mmmh, have you tried substituting t = 4 into the equation and comparing that answer to your graph result when t = 4 on the horizontal axis ?
Monday, February 3, 2014 at 7:48pm

Algebra
in 5 hours , (from 1:00pm to 6:00pm), he did 5 driveways. (7-2) so he does 1 driveway per hour or he takes 1 hour per driveway.
Monday, February 3, 2014 at 7:45pm

Algebra
it is in that form
Monday, February 3, 2014 at 7:41pm

algebra
y-0 = (-2/3)(x-5)
Monday, February 3, 2014 at 7:41pm

Algebra
Value of computer software The value v of a shopkeeper's inventory software program, in hundred of dollars, is given by v=-3/4t+6, where t is the number of years since the shopkeeper first bought the program. Graph the equation and use the graph to estimate what the ...
Monday, February 3, 2014 at 7:34pm

Algebra
By 1PM Shani had already shoveled 2 driveways, and by 6PM that day, the number was up to 7. A) Find Shani's average shoveling rate, in number of driveways per hour. B) Find Shani's shoveling rate, in hours per driveway.
Monday, February 3, 2014 at 7:32pm

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