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Posts by Marissa

Total # Posts: 319

Business
compensation plans, this book calls it pay plan.

Business
why do small businesses need a pay plan?

math 5th grade
theo's bedroom measures 12 3/4 ft by 9 2/3 ft.

math 5th grade
theo wants to put a dinosaur border around the perimeter of his room. How many rolls of border must he buy if each one covers 10 ft?

math 5th grade
two numbers have a product of 3 1/5 and a sum of 3 3/5. One of the numbers is a whole number. find the numbers.

math 5th grade
Attendence at the firemans ball has been declining. Each year the number attending is 2/3 of the previous years attendence and the cost of food is 3/4 that of the previous year. In what year will the attendence be less than 1/3 the original attendence?

math 5th grade
Of the 2800 cars produced one month,1/14 were chosen to be inspected.1/20 failed the inspection. How many cars failed insperction?

math 5th grade
A certain piece of a car's material expands by 1/12 its origial length in extreme heat. If the piece begins with a length of 30 in., how long will it be after it expands?

1st grade/english
four kinds of sentences

Science
4cm times 2cm times 3cm=24cc density = mass/ volume = 19.2 divied by 24 is 0.8 or .8

Science
Do you know at what level PCE concentrations are of concern? Is 8,300 PPB a major problem?

english
what are the literary devices in the song " if today was your last day" by nickelback?

spelling
what is the answer to this analogy? must start with the letters scr, spr, str, or thr. couldn't:wouldn't ; green ????also for fifteen: five: nine ???

spelling
analogies for couldn't wouldn't as green is to ?

geometry
line RS=line UT and line RT= line US prove triangle RST= triangle UTS

dressmaking
Mrs. Shotto was once one of your regular customers, but she hasn't asked to have any garments made in approximately one year. You note she has lost weight. She would like you to make her a special silk blouse to replace a favorite blouse that has worn out. The blouse has ...

fibers and fabrics
Which one of the following is the most complete and accurate definition of fiber? A. A stringy substance from plants B. The hair of an animal C. Man-made threads and yarns D. Basic raw material from which fabric is made 2. An example of a natural fiber is A. nylon. B. Dacron...

problem solving math
In the farm pet club pet show, 44 pets are entered. There are 3 times as many dogs as cats and half as many ferrets as dogs. How many of each are there?

Physics
Microwaves with λ = 1 mm are incident upon a 10 cm slit. At a distance of 1 m from the slit, what is the width of the slit's image? The answer is supposed to be 10 cm. I can't seem to get that though. Can someone explain?

algebra
how many quarts of pineapple juice should Theo add to a 20% pineapple drink to create 5 quarts of a 50% pineapple juice mixture?

math
you subtract 25 from each side of the equation to get 3x=45. then you divide each side by 3 to get x=15. your just undoing the math

Physics
It's an experiment. In Part 2.2.4 of the experiment, some light that reflects off the apparatus or from neighboring stations strikes the photometer even when the direct beam is blocked. In addition, due to electronic drifts, the photometer does not generally read 0.0 mV ...

Physics
A bothersome feature of many physical measurements is the presence of a background signal (commonly called "noise"). It is necessary, therefore, to subtract off this background level from the data to obtain a valid measurement. Suppose the measured background level ...

5th grade
How many different four-digit numbers can you make from the digits 1,2,3, and 4 if each digit is used only once?

Physics
so, q is the elementary charge times 2, and Q is the charge of lead? what is that? and thanks, the concepts are much clearer.

Physics
Here's the question I'm currently working on... What initial kinetic energy must an α particle have if it is to approach a stationary lead nucleus to within a distance of 35.9 fm? So I looked up a couple of things I thought we need for this problem. I have the ...

Physics
wait, aren't we lookng for the mass, too?

Physics
OK, so I'm having some serious problems with this one question. It's on relativity. Here it is: Calculate the mass of a proton (m0 = 1.67E-27 kg) whose kinetic energy is one sixth its total energy. How fast is it traveling? THANKS!!

Physics
that's what i thought, too. but it's not. 2n(material)t= m*(wavelength/2) going from a medium with higher n to lower n, you divide the wavelength by 2. thanks for the help, though. i eventually figured it out!

Physics
So I'm having some trouble with this problem.. Is there an equation or is it just a ratio? I'm having so many problems with this one! THANKS! What is the minimum thickness of coating which should be placed on a lens in order to minimize reflection of 531 nm light? The ...

Math
Have to do an enlargement project and enlarge an everyday item by 10 times it original size. Part of grade is level of difficulty so do not want to do something simple. Older sister did a lego piece. Need some good ideas on a item and am stumped!

Geometry
If 9 counters are 1/3, then what is ONE? HELP PLEASE!!!!!!!!!!!!!:():

Algebra I
By forming carp pools(no spaces).

physics
This is going to be hard to explain, but here goes! Four resistors, R1 = 30.0 ohm, R2 = 52.0 ohm, R3 = 93.0 ohm and R4 = 17.0 ohm, are connected to a battery with a terminal voltage of 18.0 V, as shown in the figure below. ____R1____R2__________ | | |_______R3_____________...

French
I want to say "I got an A on my history test." So I am going to say "J'ai eu "A" a mon interro histoire." This is the literal way to say it, but is this correct? Merci!

math
the equation is 4(2x) to the power of negative 2 times (x to the power of 2 y) im confused can someone explain how to do it?

Organic Chemistry
How would you expect the following series of compounds to compare in behavior for SN1 vs SN2? CH3CH=CHCH2Br CH3CH2CH2Br CH3C(-Br)=CHCH3 on the last one, Br is a substituent of the C and that C is double bonded to CHCH3 Please help! Even if someone could just help me get ...

social studies
no the southerns were living in a dept cycle

science
in what organelles do plants trap light energy is it vacuoles, Golgi bodies, chloroplasts or endoplasmic reticulum

8th grade
what is your average spped if you ran 50 meters in 10 seconds?

PreCalc!
sketch a graph whose domain is the interval [0, infinity) but whose domain must be restricted to [0,4] so that the function can have an inverse. (The only one i can think of is a parabola but she said we cant use that one) Consider the 2 statements: I. if f(a)=b then f(inverse...

chemistry
32363.376 kJ/mol

Math - Trig Substitution
How can I solve the integral of x^3√(9-x^2) dx using trigonometric substitution? ? ∫ x^3√(9-x^2) dx So then I know that x = 3sinθ dx = 3cosθdθ When I substitute, it becomes ∫ (3sinθ)^3 * √(9-(3sinθ)^2) * 3cosθdθ...

Math differentiation
1. y = x^x 2. y = (sin^2xtan^4x)/(x^2+1)^2 3. y = x^(1/x) 4. y = 2^(-x^3) Okay, so I'm pretty sure 1 is done easily: ln y = ln (x^x) ln y = x ln x d/dx ln y = d/dx x ln x y'(1/y) = x(1/x) + ln x(1) = 1 + ln x y'(1/y) = ln x + 1 y' y(1/y) = (ln x + 1)y y'...

Math differentiation
Can somebody please check these over for me? I really want to know what I did wrong if I made mistakes! Differentiate the following: 1. y = ln [(4-x)/(4+x)] Since it's the ln of the entire thing, then I can apply ln a - ln b so, dy/dx = y' = 1/(4-x) *(-1) - 1/(4+x) *(1...

Math integrals
What is the indefinite integral of ∫ [sin (π/x)]/ x^2] dx ? This is what I did: Let u = π/x (to get the derivative and du:) π*1/x π(-1/x^2)dx = du π(1/x^2)dx = (-1)du so, 1/x^2 = -1/πdu then ∫ [sin (π/x)]/ x^2] dx = ∫ sin(u...

Math derivatives
What is the derivative of: a) cos(3x) b) π/x I did (a) just by following chain rule: -sin(3x)*3 so it's -3sin(3x) Is that correct? I'm not completely sure how to do (b). Would it just be like the derivative of 1/x? That's -1/(x^2), would it be -π/(x^2) ?

Math
How many real roots does f(x) = x^3+5x+1 have? x^3 = odd polynomial = at least 1 real root Can I follow Descartes' rule for this? No sign change, so there aren't any positive zeros. when I sub in -x for x (-x)^3+ 5(-x) + 1 = -x^3-5x+1 Then there is one sign change, so ...

American Hictory-Colonial
How can you make a tri cornered hat out of newspaper. Like the hat paul revere wore, except made out of newspaper. Please help! Its for an AH project!

Math, derivatives
Let g(x) = sin (cos x^3) Find g ' (x): The choices are a) -3x^2sinx^3cos(cos x^3) b) -3x^2sinx^3sin(cos x^3) c) -3x^2cosx^3sin(cos x^3) d) 3x^2sin^2(cos x^3) I'm not exactly sure where I should start. Should I begin with d/dx of sin? Or do the inside derivative first...

Chemistry, acids and bases
One of the other values I have to plug in for HCl is 0.803 mols/L So then at equilibrium, NaC6H5COO is 0.197, NaCl is 0.803, C6H5COOH is 0.803 If I plug it into Henderson Hasselbach equation: pH = pKa + log [0.197]/[0.803] the log of 0.197/0.803 is negative, -0.61 Can I still ...

Chemistry, acids and bases
NaC6H5COO- (aq) + HCl (aq) <---> NaCl (aq) + C6H5COOH (aq) should say NaC6H5COO (aq) + HCl (aq) <---> NaCl (aq) + C6H5COOH (aq) and 0.8 NaC6H5COO, not 0.8 NaC6H5COO-

Chemistry, acids and bases
(a) Find pH and pOH of 1.0 M solution of sodium benzoate, NaC6H5COO. (Ka of benzoic acid is 6.2x10^-5) (b) Calculate pH after 0.205 moles per liter of HCl was added (assume volume does not change (c) Calculate pH after 1.0 moles per liter of HCl was added (assume volume does ...

Chemistry, reactions w/ water
Write the equation for the reaction of each of the following with water. a) HCl b) CH3COOH c) NaOH d) NH3 Are these correct? a. HCl (aq) + H2O (l) --> H3O+ (aq) + Cl- (aq) b. CH3COOH (aq) + H2O (l) --> CH3COO- (aq) + H3O+ (aq) c. NaOH (aq) + H2O (l) --> Na+ + OH- + ...

Gen 105
Objective of Exercise: Conduct research online regarding the strongest of your multiple intelligences. Find three Web sites which accurately describe that intelligence. If you identified more than one dominant intelligence, choose only one for your research. Note that your ...

chemistry
ammonia, NH3, is a typical ingrediant in household cleaners. it is produced through a combination reaction involcing N2(g) and H2(g). if 12.0 mol of H2(g) react with excess N2(g), how many moles of ammonia are produced?

math
n-a/4

English
largloi is gorilla osmoe is mouse swarlu walrus clame is camel

MATH
i really need help with writing linear equations to fit data. Can you help me?

Fourth Grade Geometry
If 9 counters are1/3, then what is ONE? PLEASE HELP!!!!!!!!!!!!!!!:(

science
thanks for all your help!!! :P

Science
Are nodes in a standing wave the result of constructive interference?

Science
Are nodes in a standing wave the result of constructive interference?

algebra I
HOW DO I FIGURE OUT -X2-5X-9=0

Science
How do laundry detergents remove grape juice stains?

algebra
1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 an=a1+(n-1)d a20=3+(20-1)7 a20=3+(19)7 a20=3+133 answer=b 2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15... a.an=n+6 b.an=6n+9 c.an=6n-9 d.an=n-3 an=a1+(n-1...

algebra
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...

algebra
1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1 answer=d 3)Find four ...

algebra
I'm pretty sure these are right but I just want to check. 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 answer=b 2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15... a.an=n+6 b.an=6n+9 c.an=6n-9 d.an=n...

algebra
I know what it is I'm just asking so someone could help me with my questions.

algebra
does anyone know anything about sigma notation?

algebra
do you know about sigma notation?

algebra
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...

algebra
1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1 answer=d 3)Find four ...

algebra
I'm pretty sure these are right but I just want to check. 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 answer=b 2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15... a.an=n+6 b.an=6n+9 c.an=6n-9 d.an=n...

Reiny
can you look at my posts when you come to this page please.

algebra(check)
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...

algebra(check)
1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1 answer=d 3)Find four ...

algebra(check)
I'm pretty sure these are right but I just want to check. 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 answer=b 2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15... a.an=n+6 b.an=6n+9 c.an=6n-9 d.an=n...

algebra
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...

algebra
1)Find the sixth term of the geometric sequence for which a1=5 and r=3 a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for the nth term of the geometric sequence -12,4,-4/3,... a.an=-12(1/3)n-1 b.an=12(-1/3)n-1 c.an=-12(-1/3)-n+1 d.an=-12(-1/3)n-1 answer=d 3)Find four ...

algebra
I'm pretty sure these are right but I just want to check. 1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 answer=b 2)Write an equation for the nth term of the arithmetic sequence -3,3,9,15... a.an=n+6 b.an=6n+9 c.an=6n-9 d.an=n...

algebra
1)Use Pascal's triangle to expand (w-x)^5 2)Use the binomial theorem to find the third term in the expression of (n-2p)^6 3)Which is NOT a counterexample to the formula 1^2+3^2+5^2+...+(2n-1)^2=n(2n+1)/3 A.n=3 B.n=2 C.n=1 D.n=4 is it C thanks:)

math
1)The area A of a triangle varies jointly as the lengths of its base b and height h. If A is 75 when b=15 and h=10,find A when b=8 and h=6 2)Determine the equation of any vertical asymtotes of the graph of f(x)=2x+3/x^2+2x-3 1) Area of a triangle is 1/2 b*h=A use the formula ...

algebra
4)Write the equation x^2-2x+y^2+4y=11 in standard form. answer= (x-1)^2+(y+2)^2=16 5)Write the equation 4x^2+24x-y+34=0 in standard form answer= y= 4(x-3)^2+2

algebra
1)Write an equation for the parabola with focus (1,3)and vertex(0,3) answer= x= 1/4(y-3)^2 2)Write an equation for a circle if the endpoints of a diameter are at (1,1)and(1,-9) answer= (x-1)^2+(y+4)^2=25 3)Which is the equation of a circle with center (0,1)and radius 2 units? ...

algebra
4)Find the exact solutions of each system of equations x^2+y^2=25 and 9y=4x^2 answer= (3,4),(-3,4) This is correct from what I found after entering the functions into my TI-83 calculator and using the trace=> intersect function on the calculator.

algebra
1)What is the 4x^2=y^2+8y+32 answer= either hyperbola or parabola 2)The graph of which equation is a circle? answer= 5x^2+10x+5y=9 3)Solve the system of equations by graphing x^2+y^2=16 and y= -x+4 answer= (4,0),(0,-4) 4)Find the exact solutions of each system of equations x^2...

algebra
1)Write an equation for an ellipse if the endpoints of the major axis are at(1,6)and (1,-6)and the endpoints of the minor axis are at (5,0)and (-3,0) answer= (x-1)^2/36+y^2/16=1 2)Which is the equation of an ellipse with center (-4,2)and a horizontal major axis? answer= (x-4)^...

algebra
1)What is the distance between the museum and sailing club.I cant post the graph or anything but I have my numbers right its 53 but I used the distance formula so its either 53 units or the square root of 53 units. 2)Write the equation of the parabola y= 4x^2-8x+1 in standard ...

algebra
how would you solve this; Write an equation for the hyperbola with vertices (-10,1) and (6,1) and foci (-12,1)and (8,1) The centre is the midpoint between the vertices, which is ((-10+6)/2,(1+1)/2) or (-2,1) so the equation looks like (x+2)^2/a^2 - (y-1)^2/b^2 = 1 a is the ...

algebra
1)Write the expression 9n^6+7n^3-6 in quadratic form,if possible A.9(n^3)^3+7n^3-6 B.9(n^2)^3+7(n^2)-6 C.9(n^3)^2+7(n^3)-6 D.not possible I'm thinking C on this one but im not sure 2)solve b^4+2b^2-24=0 A.-2,-square root of 6,square root of 6,2 B.-square root of 6,2,2i,i ...

algebra
1)A.f(x)= x^2+4 B.f(x)= x^2-4x^2+4x-16 C.f(x)= x^2+4x^2+4x+16 D.f(x)= x^2-4x^2-4x+16 2)A.+-1,+-2,+-3,+-6 B.0,+-1,+-2,+-3,+-6,+-1/3,+-2/3 C.+-1,+-2,+-3,+-6,+-1/3,+-2/3 D.+-1,+-3,+-1/6,+-1/3,+-1/2,+-3/2 4)I don't know what they mean either but this is all it says. A.3x^2-x+5...

algebra
1)Use synthetic subsitution to find f(-3)for f(x)=x^4-4x^3+2x^2-4x+6 answer= -15 2)One factor of x^3+2x^2-11x-12 is x+4. find the remaining factors answer= x-1;x-3 3)Which describes the number and type of roots of the equation x^3+121x=0 answer= 1 real root,two imaginary roots...

algebra(reiny)
Hey thanks for all your help but you kinda confused me on a few: 1)Determine whether f(x)=-5x^2-10x+6 has a maximum or minimum value and find that value A.minimum -1 B.maximum 11 C.maximum -1 D.minimum 11 and you said the function opens up, so there is a minimum. it occurs ...

algebra
1)Write an equation for the parabola whose vertex is at (-8,4) and passes through (-6,-2) answer=y=-3/2(x+8)^2+4 2)Solve x^2>_2x+24 answer=x<_-4 or x>_6 #1, ok #2, ok

algebra
1)Find the exact solutions to 3x^2=5x-1 using the quadratic formula. answer=5 plus or minus the square root of 37 over 6 2)Use the discriminant to determine the number and type of roots for the equation 2x^2-7x+9=0 answer=2 complex 3)Identify the vertex,axis of symmetry,and ...

algebra
1)Solve by factoring:5x^2=4-19x answer=-4,1/5 2)Which quadratic equation has roots 7 and -2/3? answer=A A.2x^2-11x-21=0 B.3x^2-19x-14=0 C.3x^2+23x+14=0 D.2x^2+11x-21=0 3)To solve 4x^2-28x+49=25 by using the square root property,you would first rewrite the equation as answer=(...

algebra
1)Identify the y-intercept and the axis of symemetry for the graph of f(x)=-3x^2+6x+12. answer=12:x=1 2)Determine whether f(x)=-5x^2-10x+6 has a maximum or minimum value and find that value. answer=maximum -1 3)Solve x^2=4x by graphing and indicate the roots. answer=0,4 4)...

math.
hey guys i was just wondering if someone could help me with my 4 previous posts Algebra. Other people have posted things to check and they have gotten responses,my posts are still on this page thank you:) Marissa, I am sure nobody is intentionally ignoring you. Some of the ...

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