Saturday
April 19, 2014

Homework Help: 2nd Grade

Post a New Question | Current Questions

math
draw a shape that can be modelled by the expression 5 x 3 - 2 to the 2nd power. Write a problem for the expressin and evaluate it. Help.....please....!!! ;-(
Monday, October 29, 2007 at 6:08pm

algebra
Would the let statements go like this then: Let x= 1st C.I.= 6 Let x+1= 2nd C.I.= 7 Let x+1= 3rd C.I.= 7 b/c the second and 3rd aren't C.i.s, so...????????
Saturday, October 27, 2007 at 12:24pm

AP US History
Where can you find sources of the women's movement during the 2nd Great Awakening?
Friday, October 26, 2007 at 1:54pm

Calculus
honestly i don't think i can help because i really don't understand but look up "e^cx derivative" on google and the 1st and 2nd links just might help
Sunday, October 21, 2007 at 7:06pm

Algebra II
1st#=x-2 2nd#=x 1/2(x-2)+x=41 x-2+2x=82 3x=84 x=28
Thursday, October 18, 2007 at 8:13pm

Algebra
the first one is correct, the 2nd is not try f(4) in your equation, you do not get zero. I had f(x) = a(x^2+1)(x-4) then for f(-3)=60 60 = a(10)(-7) a= -6/7 so f(x) = -6/7(x^2+1)(x-4) expand it for your answer
Friday, October 12, 2007 at 11:05pm

language
Please help me in figuring out my worksheet that says to follow directions in the order they are given. 1.Write the word solar. 2.Add the 5th letter of the alphabet to the left of each consonant. 3.Add the 5th consonant of the alphabet to the right of the last letter from the ...
Thursday, October 4, 2007 at 12:46am

spanish
Actually, maybe in my 2nd sentence I should change por to con?
Friday, September 21, 2007 at 7:37pm

social studies
What happens at the 2nd battle of Ticonderoga in July, 1777?
Monday, September 17, 2007 at 8:16pm

math
evaluate (10 to the 2nd power-4times 8)divided by(8timees 9)
Tuesday, September 11, 2007 at 5:37pm

2nd grade math
what is mental math and how does it work. the question is use mental math to find the missing numbers. look for the pattern in each chart.the chart ooks like eight boxes two rows of four, the filled in is 0,1,2,3,4the second row is empty, the second queston is make 6 two rows ...
Monday, August 27, 2007 at 7:12pm

Calculus
f(x)=lnx f'(x)= 1/x If I remember correctly your going to have to derize the second one again (chain rule) (7x-2)^3 x= 7x-2 dx= 7 (x)^3dx get the derivative of this 3(x)^3-1 dx + c 3(x)^2 dx + c and plugging in the found values... 3(7x-2)^2 ( 7)= 21(7x-2)^2 ---(2nd part) ...
Friday, August 24, 2007 at 3:02pm

fractions
I meant the 2nd site
Thursday, August 23, 2007 at 11:40am

2nd grade math
If you have a rectangle with 24 square units 3 lines down 8 across how can you have a 4 unit rectangle with a perimeter of 8 around the outside also 6 units with a perimeter of 10 in a seprate problem A square of 4, perimeter of 8. What about a 2x2 square? A rectangle of 3x2 ...
Monday, May 21, 2007 at 5:53pm

Math
The sum of two numbers is 112. The second is 7 more than 4 times the first. What are the two numbers? Am I doing something wrong? I seem to be stuck. x + y =112 (x+7)4y=112 The second equation should be: y+7=4x Should be the 2nd equation. The 2nd one: y is 7 more. This is a ...
Friday, May 18, 2007 at 10:13pm

physics-energy conservation
some people refer to heat as "low grade energy. a)how is low grade energy different from high grade energy? b)give two example of high grade energy When heating a cup of tea, which would be preferable...a stove with a burner on top, or a heating pad? High grade energy is ...
Tuesday, May 8, 2007 at 4:41am

random
I dunno. Why don't u wait 4 a teacher 2 answer that? I guess any grade that can type and ask Qs. :p any grade.
Monday, May 7, 2007 at 6:27pm

Algerbra
5 to the 2nd power-2(5)(4)+-4to the secondpower = I got 25-40+16=59 is that the right way to do this problem yes. yes it is
Wednesday, May 2, 2007 at 3:39pm

chem
this is my question Calculate the hydronium ion consentration and the hydroxide concentration in blood in which the PH is 7.3. I dont have invlog on my calculator so I hit log(7.3)= .863 for hydronium. Is this dumb for me to do? That is dumb for you to do. Get a calc that has ...
Friday, March 23, 2007 at 9:40pm

oral report 2nd grade
What would be a good report for a second grader to do, on a person, someone famous, sports person, etc. the kids have to dress the part and give a short report. My 8 year old wants to do David Beckham, is that okay for should we do someone REALLY famous? David Beckham is ...
Sunday, March 11, 2007 at 11:30am

math
what is the difference between translation , rotation, relections, and dilation in 8 grade work In 8th grade talk, I recommend you check the examples in your book. OR, if you put your definitions here, I can critique them.
Sunday, January 28, 2007 at 10:59am

math / linear programming
Two factories manufacture 3 different grades of paper. The company that owns the factories has contracts to supply at least 16 tons of low grade, 5 tons of medium grade, and at least 20 tons of high grade paper. It costs $1000 per day to operate the first factory and $2000 per...
Tuesday, January 2, 2007 at 6:44pm

ANYBODY HERE?????????????????????????????????
PLEASE ANSWER MY QUESTION! THANK YOU! WHAT IS A PLOT? A plot (in mathematics and engineering) is a graph. It geography, it is a piece of land. In a cemetery, it is a grave site. It can also be a covert plan of action or conspiracy. In English a "plot" can be the form...
Saturday, December 23, 2006 at 3:07pm

Stats
Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: $9500 Variance: $1250 May: Mean: $7400 Variance: $1425 June: Mean: $8600 Variance: $1610 a) find the mean and standard deviation of the ...
Sunday, October 29, 2006 at 8:49pm

MATH
Which expression is a polynomial???? A: 11 0ver the square root of x B: square root of 11 times x C: x - square root 11 D: 11 over the square root of x to the 2nd power (sorry I am not sure how to insert square root symbols or fractions, so u have to imaging its there) thank ...
Sunday, April 6, 2014 at 7:37pm

Physics -- check answers please
1. My answer is zero, because the car did not move backwards. However, you should get a 2nd opinion. 2. KE = 0.5*m*V^2 = 40 Joules KE = 0.5*5*V^2 = 40 2.5V^2 = 40 V^2 = 16 V = 4 m/s. 3c. 4a. PE + KE = Constant 5. I don't know what you mean by 4 100 J If you mean 400 J. the...
Thursday, April 3, 2014 at 8:08pm

Algebra
heck, the answer to the 2nd part provides the answer to the first part: x y ∆y 1 3 2 10 7 3 29 19 4 66 37 5 127 61 6 218 91 as you can see, x has to increase less and less for y to double.
Thursday, April 3, 2014 at 12:27am

not - trigonometry
Why are you calling this trig ? assuming his first deposit is NOW end of 1st year: 1000(1.06) + 1000 = 2060 end of 2nd year: 2060(1.06) + 1000 = 3183.60 ... end of 5th year: .......... = 6637.09 fill in the rest using your calculator
Tuesday, April 1, 2014 at 9:23pm

Patterns and rules unit test 7th grade
I go to connection acdeamy and I am in the 7th grade regular math Mrs. Janus I just need some help with this test Find the next three terms of the sequence -2,-12,-72,-432... A. -1,728,-6,912,-27,648
Monday, March 31, 2014 at 8:36am

Math
If you rearrange things a bit, you get x - 6y = 2 3x - 18y = 4 which is the same as x - 6y = 2 x - 6y = 4/3 The lines are parallel, so there is no intersection, and no solution to the equations. Your answer fits the 2nd equation, but not the first.
Sunday, March 23, 2014 at 8:11pm

MATH HELP!!
from the 2nd: 2c + 6d = -34 c + 3d = -17 c = -3d-17 plug into the 1st: 3(-3d-17) - 7d = -3 -9d - 51 - 7d = -3 -16d = 48 d = -3 then c = -3(-3) - 17 = -8 c = -8 , d = -3
Sunday, March 23, 2014 at 2:42pm

Algebra II
double the 2nd c - 6d = 16 add to the first 3c = 30 c = 10 back into the 1st 20 + 6d = 14 6d = -6 d = -1 c = 10 , d = -1
Sunday, March 23, 2014 at 2:40pm

English
I'm writing about hearing a certain song can take you back to a moment in your past. I know that the 1st paragraph is thesis and the 2nd is explain what song reflects on past and why. I don't know what i should in include in the 3rd paragraph
Friday, March 21, 2014 at 11:08pm

Computer
Home work:- Write a program to read 5 records consists of first name, last name, id and grade. Assign the grade according to the following specifications: 0<g<= 50 F 50<g<=60 D 60< g<= 70 C 70<g<=90 B 90<g <=100 A Use Stringtokenizer and buffering...
Thursday, March 20, 2014 at 12:49pm

interest
we don't really need the amount at first rate: 2 = 1 e^(.05t) ln2 = .05t t = 13.86 ---> the doubling time at 2nd rate: 2 = 1 e^(.1t) you finish it.
Monday, March 17, 2014 at 10:04pm

algebra
How would you solve polynomial equation for, a to the 8th power minus a to the 2nd power and b to the 6th power?
Monday, March 17, 2014 at 5:26pm

Math
when the lines are the same. 2x-y = 5 Hmmm. a typo - no y term in the 2nd equation. Anyway, since there are 8x, the same line would be just 4 times the other. 8x - 4y = 20 Looks like a=10
Friday, March 14, 2014 at 5:19am

Science 6th grade
I wish I could help you I'm in 6th grade and when I get my answer correct or incorrect I just write the correct answers down :D and I tell other 6th graders the correct answers :D
Wednesday, March 12, 2014 at 4:24pm

7th Grade
In my school, we have three units for seventh grade: Chemistry, Physics, & Astronomy. If you want to know your personal science class curriculum, ask your teacher! Hope I helped! ~Sanja
Wednesday, March 12, 2014 at 1:30am

Algebra
This is Algebra. Haha.. You can take algebra between 8th and 11th grade. Something like that.. Not really a grade thing.. Just a subject. Why do you ask?
Tuesday, March 11, 2014 at 8:49pm

MATH
Determine the equation of a line that is perpendicular to the line 2x+3y=7 and passes through the point (0,6) What is the volume if the prism in terms of y? 1st dimension: 2y+1 2nd dimension: y 3rd dimension: y+3
Monday, March 3, 2014 at 6:14pm

physics Sound PLEASE HELP ASAP!!! PLEASE
The 2nd harmonic of a string of length 60 cm and linear mass density 1.1 g/m has the same frequency as the 5th resonance mode of a closed pipe of length 0.8 m. Find the tension in the string.
Sunday, March 2, 2014 at 7:25pm

physics Sound
The 2nd harmonic of a string of length 60 cm and linear mass density 1.1 g/m has the same frequency as the 5th resonance mode of a closed pipe of length 0.8 m. Find the tension in the string.
Sunday, March 2, 2014 at 7:24pm

algebra
sub the first into the 2nd ... 3x - 18y = 4 3(6y+2) - 18y = 4 18y + 6 - 18y = 4 6 = 4 , which of course is nonsese, so .. there is no solution (You have two parallel lines)
Saturday, March 1, 2014 at 2:25pm

Math
I'm still not exactly sure how to do it but the answer is 1)1st = $58; 2nd = $112; 3rd = $135 <3 <3 <3 :D
Friday, February 28, 2014 at 8:40pm

Algebra
If the first digit is t (for tens) and the 2nd digit is u (for units), then u = 5t+2 5t = u+3 Sorry, no solution. Care to rethink it?
Thursday, February 27, 2014 at 6:37pm

probability
Given that there were 4 Heads in the first 7 tosses, find the probability that the 2nd Heads occurred at the 4th toss. Give a numerical answer.
Thursday, February 27, 2014 at 5:48pm

4TH GRADE MATH
MS T BOUGHT CUPCAKES FOR HER 3RD GRADE CLASS. MS. CASA BOUGHT TWICE AS MANY CUPCAKES AS MS T, AND 4 TIMES AS MANY CUPCAKES AS MS. G. MS. G BOUGHT 241 CUP CAKES. A. HOW MANY CUPCAKES DID MS T BUY? B. MS.. B CAME LATE TO THE PARTY AND HALF OF THE CUPCAKES HAD ALREADY BEEN EATEN...
Wednesday, February 26, 2014 at 5:03am

help
If the 3rd Monday of the month follows the 2nd Sunday of the month, then the date of the 3rd Monday is the _____th. a) 14 b) 15 C) 16 d) 17 e) 18 Please explain???
Monday, February 24, 2014 at 9:25pm

math
first day he ran 1.5 2nd day he ran 1.5(1.1) 3rd day he ran 1.5(1.1)(1.1) = 1.5(1.1)^2 .. on the 7th day he ran 1.5(1.1)^6 so we have: 1.5 + 1.5(1.1)+ 1.5(1.1^2 + ... + 1.5(1.1)^6 which is a geometric series whose sum is 1.5( 1.1^7 - 1)/(1.1 - 1) = 1.5(.9487171)/.1 = 14....
Saturday, February 22, 2014 at 11:59pm

Language Arts ~CHECK MY ANSWERS~
oops the 2nd one. Skim the article “Cruise Control” to find the name of the bumper sticker service found in Arlington, Texas. 1-866-2TELLMOM 800-4-MYTEEN <----- Big Mother Dad’s Eyes
Thursday, February 20, 2014 at 10:56pm

Algebra
the first one is already factored, so how come you are stuck on it ? 2nd: get the equation = 0 then it factors quite easily 4a^2 - 11a + 6 = 0 and 9r^r - 30r + 21 = -4 have you not been taught some kind of a method to factor these kind of trinomials? A common method these days...
Thursday, February 20, 2014 at 9:14pm

math
1st round: 3 2nd round: 9 3rd round: 27 You're right.
Thursday, February 20, 2014 at 8:45pm

5th grade
Your Daughter should go to the Library an get books above her grade have her start studying that and studying her normal stuff even harder. Now I don't think yo should cram her brain but, I definitely think that if she wants to go to a G&T School that's what she needs ...
Thursday, February 20, 2014 at 2:01pm

Math.G.P
The 1st term of a G.P is equal to x-2,the 3rd term is x+6 and the arithmetic mean of the 1st and 3rd terms stands in the ratio to the 2nd 5:3.find the value of x.
Friday, February 14, 2014 at 6:13am

MAT-134 Math XL
Graph the following linear equation using one of the following methods: 1st slope intercept form y = mx + b 2nd table of values 3rd x-intercept and y-intercept 1. 3x + 4y = 12
Thursday, February 13, 2014 at 3:43pm

math
Thank you for the 2nd one I got .04545 on the 3rd one I got 32.7272
Tuesday, February 11, 2014 at 6:08pm

physics
A box is on Callisto (2nd largest moon of Jupiter). The box weighs 36 lb and is in free fall. How much force is the box exerting on Callisto and in what direction?
Tuesday, February 11, 2014 at 4:09pm

Physics
A box is on Callisto (2nd largest moon of Jupiter). The box weighs 36 lb and is in free fall. How much force is the box exerting on Callisto and in what direction?
Tuesday, February 11, 2014 at 4:09pm

Statistics in Psychology
What research steps must you go through to use the relationship between a person’s intelligence and grade average in high school so that, if you know a person’s IQ, you can more accurately predict the person’s grade average?
Monday, February 10, 2014 at 1:17pm

STATISTICS
What research steps must you go through to use the relationship between a person’s intelligence and grade average in high school so that, if you know a person’s IQ, you can more accurately predict the person’s grade average?
Monday, February 10, 2014 at 5:29am

economic
Suppose, unfortunately , your mathematics and economics professors have decide to give tests 2 day from now and you can spend only a total of 12 hours studying for exams .After some thought, you conclude that dividend your study time equally between each subject will give you ...
Sunday, February 9, 2014 at 12:24am

economic
10. Suppose, unfortunately , your mathematics and economics professors have decide to give tests 2 day from now and you can spend only a total of 12 hours studying for exams .After some thought, you conclude that dividend your study time equally between each subject will give ...
Sunday, February 9, 2014 at 12:18am

Physics
d = Vo*t + (V^2-Vo^2)/2a d = 20*0.5 + (0-20^2)/-10 = 50 m. Note: Vo*t is the distance traveled during the reaction time. The 2nd Eq was derived from V^2 = Vo^2 + 2a*d. Solve for d.
Saturday, February 8, 2014 at 8:09pm

math
guess my rule with two rules. Having such as hard time understanding this and would like to be able to explain to my 2nd grader! home wor sheet has 2 circles joined togeather, rule A has 2 girls in it with glasses, in the middle there is another girl with glasses, in rule B ...
Tuesday, February 4, 2014 at 4:15pm

math
in an AP the 10th term is 54 and 5th term is 4 times the 2nd term . Find the 1st term 'a' and common difference 'd'
Monday, February 3, 2014 at 10:58pm

12th Grade Vocabulary Antonyms Practice
Does anyone know of a good place that I can practice 12th grade vocabulary antonyms?
Saturday, February 1, 2014 at 3:17pm

Math help
Well,you are told that y has a value of 3 so in the 2nd equation, simply replace y with that value and solve for x 4(3) = 2x + 18 12 - 18 = 2x -6 = 2x -3 = x so x=-3, y = 3 Done!
Thursday, January 30, 2014 at 8:54pm

Math
There are 8 ways to choose the first role, leaving 7 ways to choose the 2nd role, 6 ways for the 3rd, etc. 8*7 = 56, so we must have just two roles.
Thursday, January 30, 2014 at 6:04am

2nd Order linear ODEs
Hmmm. I'd let v = y' Then we have x^2 v' = xv v' = v/x dv/v = dx/x log v = log x + c v = e^c x or, v = c1 * x That means y' = c1 * x y = c1 x^2 + c2 check: y' = 2c1 x y" = 2c1 x^2 y" - xy' = x^2(2c1) - x(2c1 x) = 0
Thursday, January 30, 2014 at 6:00am

2nd Order linear ODEs
I'm having trouble solving this problem: For the equation x^(2)y′′ - xy′ = 0 , find two solutions, show that they are linearly independent and find the general solution. Hint: Try y = x^(r). I divided the equation by x^(2) first to simplify it, and then I...
Thursday, January 30, 2014 at 1:04am

Math help
I assume you have a typo, and the 2nd equation is -14x + 4y = 26 notice dividing by 2 will yield the first equation so you basically have ONE equation in TWO unknowns, which will yield an infinite number of solutions, e.g. (1, 10) is one, so is (13, 52) etc
Monday, January 27, 2014 at 8:19pm

Algebra 2
x^2 + x = -c x^2 + x + 1/4 = 1/4-c (x+1/2)^2 = (1-4c)/4 x+1/2 = ± √(1-4c)/2 x = -1/2 ± √(1-4c) = (-1 ± √(1-4c) )/2 -keep only the x^2 and x terms on the left - take half of the coefficient of the x term, then square it - add that result ...
Saturday, January 25, 2014 at 9:53pm

Math
first rebound = .75(200) 2nd rebound = .75(.75(200)) =.75^2 (200) 3rd = .75^3 (200) 4th = .75^4 (200 = appr 63.28 ft
Wednesday, January 22, 2014 at 9:25pm

maths
The 2nd term in Geometric sequence is -4 and the 5th is 32 ,find the general formula \term and the first 3 terms ,find the 18th term
Tuesday, January 21, 2014 at 3:16pm

Mathh
your first part is correct for the 2nd part, I would have it as T(x) = .0175x - 3000 , x ≥ 400,000 (so I have taken 1.75% on the whole thing, but then subtracted the 0.75% part for the first 400,000 which is 3000. Where did you get your $500 from ? )
Tuesday, January 21, 2014 at 7:58am

Math
Oh yeah, the ellie one is from Fourth Grade math, Chapter 8, 8-6 so I believe trent, you may be in fourth grade. I had that problem a year ago
Monday, January 20, 2014 at 5:35am

statistics
What is the probability for a: a.       Randomly selected person being a male in grade E? b.      Randomly selected male being in grade E? c. Why are the results different?
Sunday, January 19, 2014 at 11:23pm

algebra
slope of first line = (8-2)/(6+1) = 6/7 slope of 2nd line = (y-5)/(5+1) = (y-5)/6 to be perpendicular, (y-5)/6 = -7/6 y-5 = -7 y = -2
Friday, January 17, 2014 at 11:16pm

Math
well, the 2nd equation says y = 3.5/(3x+1) so, plugging that into the 1st equation, we have x^3 - 12.25/(3x+1)^2 = 7.75 (36x^5+24x^4+4x^3-279x^2-186x-80) / 4(3x+1)^2 = 0 a little synthetic division yields x=2
Wednesday, January 15, 2014 at 5:46pm

math
from the first data: it has to be a multiple of 5 + 12, could be 17 22 27 32 37 42 47 ... from the 2nd data: it has to be a multiple of 6 + 1 , could be 7 13 19 25 31 37 43 .. ahhh, 37 is found in both , which is also Lila's answer. There were 37 choir members
Tuesday, January 14, 2014 at 11:11pm

Math Check 2 ?s quick
first question is correct #2 should be true. sin^-1 (x) means find the angle Ø so that sinØ = x since the result of taking the sine is always a number between -1 and +1 then for sin^-2 (x) , your choice of x has to be -1 ≤ x ≤ 1 e.g try taking sin^-1...
Tuesday, January 14, 2014 at 11:01pm

Math for Steve
For the first one, just subtract the two equations to get 2x = -5 and go from there For the 2nd set, multiply them a bit to get 45x+54y = 180 45x+55y = 160 Now subtract to get y = -20 and go from there
Monday, January 13, 2014 at 8:37pm

Math
2nd one: x/4- 8 = 16 - (3/4)x multiply each term by 4 , the LCD x - 32 = 64 - 3x 4x = 96 x = 96/4 = 24 1st one is even easier, give it a try.
Thursday, January 9, 2014 at 11:40pm

Cultural Diversity
Hey Ms. Sue thanks for responding! Sorry that you are offended about the question number 3. It's wasn't me that wrote it. So I see that you disagree with the 2nd answer, can you explain? what about 3 is my answer correct?
Wednesday, January 8, 2014 at 9:01pm

8th Grade Connections Academy
i'm in 7th grade in connections academy at ripon
Wednesday, January 8, 2014 at 6:12pm

Language arts 2 question!??
I haven't read what your 1st question is about. The 2nd one is frail. It implies negative health or breakable structure. The 3rd is " ... important ... " (The others are introducing causes.)
Sunday, January 5, 2014 at 10:37pm

Math - Algebra
Von's arcade uses 3 different colored tokens for its game machines. For 500, you can purchase any of the following combinations of tokens: 8 gold, 18 silver, and 7 bronze tokens; 8 gold, 14 silver, and 13 bronze tokens; or 16 gold, 6 silver, and 9 bronze tokens. What is ...
Saturday, January 4, 2014 at 9:26pm

Math
sure. the 2nd equation says that y = 105-x. Substitute that into the first equation to get 1.25x + 0.75(105-x) = 109.75 x = 62 So, y = 105-62 = 43
Saturday, January 4, 2014 at 12:13am

college algebra
multiply 2nd by 8 8x - 288y = -2640 subtract that from the first 297y = 2673 y = 9 sub into 1st 8x + 81 = 33 8x = -48 x = -6
Tuesday, December 17, 2013 at 10:43pm

Math (7th grade)
I have a math question that I do not really understand how to answer is there someone who can walk me through it? In Pinecrest middle school there are 58 6th graders 76 7th graders, and 38 8th graders. The counsel is made up of 35 students who are chosen to represent all three...
Tuesday, December 17, 2013 at 3:42pm

physics
An automobile moving at a constant velocity of 15 m/s passes a gasoline station. Two seconds later, another automobile leaves the station and accelerates at a constant rate of 2 m/s^2 in the same direction as the 1st automobile. How soon does the 2nd automobile overtake the ...
Monday, December 16, 2013 at 4:36am

math
volume of first jar = π(1.5)^2 (4) = 9π inches^3 volume of 2nd jar = π(3^2)(3) = 27π which is 3 times the volume of the first, so it should cost 3 times as much 3(0.60) = $1.80
Saturday, December 14, 2013 at 9:19pm

Chem cp
My teacher didnt teach me how to do the problems i asked befor but he show me how to do a problem w/ an actual element ... The one problem he taught me was ... How many atoms of iron are there in 735g of iron? We rounded fe to the whole number 56 Grams to mole to atoms= map of...
Wednesday, December 11, 2013 at 8:58pm

Math - Linear Algebra
1st one times 2 2x - 8y - 6z = -36 2nd -2x + 8y + 7z= 41 add them z = 5 sub into 1st x - 4y - 15 = -18 x - 4y = -3 x = 4y - 3 let y = 0 , x = -3, z = 5 ---> point (0,-3,5) let y = 2 , x = 5, z = 5 ---> point (2,5,5) so direction of line of intersection is (2, 8, 0) using...
Sunday, December 8, 2013 at 7:54pm

math
1st TV = 750 2nd TV = 750 * 0.55 = 412.50 3rd TV = 750 * 0.2 = 150 1.06(750 + 412.5 + 150) = $1,391.25
Saturday, December 7, 2013 at 1:11pm

Math
Did you mean 2x - 5y = -8 for the first one ? I will assume that is what you meant: Personally I would not use substitution, but .... from the 2nd 26-3x = 2y (26-3x)/2 = y into the 1st: 2x - 5(26-3x)/2 = -8 times 2 to get rid of that fraction ... 4x - 5(26-3x) = -16 4x - 130...
Saturday, December 7, 2013 at 12:28am

i need help math
1st TV = 750 2nd TV = 750 * 0.55 = 412.50 3rd TV = 750 * 0.2 = 150 1.06(750 + 412.5 + 150) = $1,391.25
Friday, December 6, 2013 at 5:58pm

Chemistry
Mech. #3 The original and mech. #3 are both 2nd order and have the same rate law. Rate law= k[NO]^2[H2]
Thursday, December 5, 2013 at 11:49pm

Chemistry
Mech. #3 The original and mech. #3 are both 2nd order and have the same rate law. Rate law= k[NO]^2[H2]
Thursday, December 5, 2013 at 11:49pm

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