Questions and answers by

Marissa

Questions (182)

What steps do we use to change 1-1/2 cups in half?
1. 8 answers
2. 267 views
What is the ionization energy (in kJ/mole) of the hydrogen-like ion F8+ ?
1. 0 answers
2. 798 views
estimate a 15% tip on a $42.65 check
1. 1 answer
2. 513 views
Write the equation of the prpendicular bisector of the line segment AB with endpoints A(1,1) and B(7,5). Write the answer in
1. 1 answer
2. 558 views
Write the equation of the perpendicular bisector of the line segment AB with endpoints A(1,1) and B(7,5). Write your answer in
1. 1 answer
2. 981 views
Can you help me describe National Debt in 2 paragraphs?
1. 1 answer
2. 452 views
Based on the balanced equation,C2H4 + 3O2 → 2CO2 + 2H2O calculate the molecules of H2O formed when 135 molecules of O2 are
1. 1 answer
2. 1,675 views
three different liquids are used in a manometer.(a) derive an expression for P1-P2 in terms of ro(a), ro(b), ro(c), h1, and h2
1. 3 answers
2. 5,285 views
What were the economic, political, and social aspects of New Netherland, New Spain and New France?
1. 0 answers
2. 511 views
100g of water at 30.0C is mixed with 150g of water at 85.0C. What is the final temperature of th mixture assuming no heat is
1. 2 answers
2. 595 views
Balance this equations for redox reactions in basic solution.Fe(OH)3(s) + OCl- �¨ FeO42- + Cl-
1. 3 answers
2. 7,887 views
Pretend the program in Senegal had been reducing infant mortality at a rateof 11 % per year. How long would it take for infant
1. 1 answer
2. 584 views
heather and Matthew walk with an average velocity of .89 m/s eastward. it takes them 44 min to walk to the store. what is their
1. 2 answers
2. 725 views
why do small businesses need a pay plan?
1. 3 answers
2. 893 views
Do you know at what level PCE concentrations are of concern? Is 8,300 PPB a major problem?
1. 2 answers
2. 363 views
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
1. 2 answers
2. 943 views
A bothersome feature of many physical measurements is the presence of a background signal (commonly called "noise"). It is
1. 3 answers
2. 1,285 views
Here's the question I'm currently working on...What initial kinetic energy must an α particle have if it is to approach a
1. 3 answers
2. 982 views
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
1. 5 answers
2. 723 views
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
1. 2 answers
2. 682 views
Have to do an enlargement project and enlarge an everyday item by 10 times it original size. Part of grade is level of
1. 1 answer
2. 580 views
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
1. 0 answers
2. 602 views
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
1. 3 answers
2. 394 views
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?
1. 2 answers
2. 365 views
How would you expect the following series of compounds to compare in behavior for SN1 vs SN2?CH3CH=CHCH2Br CH3CH2CH2Br
1. 1 answer
2. 1,497 views
sketch a graph whose domain is the interval [0, infinity) but whose domain must be restricted to [0,4] so that the function can
1. 0 answers
2. 664 views
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 =
1. 1 answer
2. 795 views
1. y = x^x2. 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
1. 1 answer
2. 779 views
Can somebody please check these over for me? I really want to know what I did wrong if I made mistakes!Differentiate the
1. 1 answer
2. 630 views
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:)
1. 1 answer
2. 553 views
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
1. 1 answer
2. 628 views
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?
1. 1 answer
2. 590 views
How can you make a tri cornered hat out of newspaper. Like the hat paul revere wore, except made out of newspaper. Please help!
1. 1 answer
2. 584 views
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)
1. 1 answer
2. 694 views
(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
1. 6 answers
2. 2,193 views
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.
1. 1 answer
2. 1,223 views
Objective of Exercise: Conduct research online regarding the strongest of your multiple intelligences. Find three Web sites
1. 11 answers
2. 904 views
HOW DO I FIGURE OUT -X2-5X-9=0
1. 2 answers
2. 440 views
How do laundry detergents remove grape juice stains?
1. 0 answers
2. 449 views
1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7a.143 b.136 c.140 d.133 an=a1+(n-1)d a20=3+(20-1)7
1. 1 answer
2. 2,616 views
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite
1. 1 answer
2. 651 views
1)Find the sixth term of the geometric sequence for which a1=5 and r=3a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for
1. 0 answers
2. 661 views
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
1. 0 answers
2. 1,215 views
does anyone know anything about sigma notation?
1. 3 answers
2. 327 views
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite
1. 2 answers
2. 672 views
1)Find the sixth term of the geometric sequence for which a1=5 and r=3a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for
1. 0 answers
2. 623 views
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
1. 0 answers
2. 817 views
can you look at my posts when you come to this page please.
1. 1 answer
2. 360 views
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite
1. 0 answers
2. 1,003 views
1)Find the sixth term of the geometric sequence for which a1=5 and r=3a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for
1. 0 answers
2. 934 views
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
1. 0 answers
2. 809 views
1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite
1. 0 answers
2. 651 views
1)Find the sixth term of the geometric sequence for which a1=5 and r=3a.1215 b.3645 c.9375 d.23 answer=a 2)Write an equation for
1. 0 answers
2. 708 views
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
1. 0 answers
2. 761 views
1)Use Pascal's triangle to expand (w-x)^52)Use the binomial theorem to find the third term in the expression of (n-2p)^6 3)Which
1. 1 answer
2. 889 views
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
1. 1 answer
2. 2,135 views
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
1. 1 answer
2. 411 views
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
1. 0 answers
2. 1,346 views
4)Find the exact solutions of each system of equations x^2+y^2=25 and 9y=4x^2answer= (3,4),(-3,4) This is correct from what I
1. 0 answers
2. 818 views
1)What is the 4x^2=y^2+8y+32answer= either hyperbola or parabola 2)The graph of which equation is a circle? answer=
1. 0 answers
2. 980 views
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
1. 0 answers
2. 977 views
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
1. 0 answers
2. 793 views
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
1. 0 answers
2. 630 views
1)Write the expression 9n^6+7n^3-6 in quadratic form,if possibleA.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
1. 1 answer
2. 1,533 views
1)A.f(x)= x^2+4B.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
1. 0 answers
2. 1,355 views
1)Use synthetic subsitution to find f(-3)for f(x)=x^4-4x^3+2x^2-4x+6answer= -15 2)One factor of x^3+2x^2-11x-12 is x+4. find the
1. 0 answers
2. 664 views
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
1. 0 answers
2. 1,334 views
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
1. 1 answer
2. 1,405 views
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
1. 0 answers
2. 886 views
1)Solve by factoring:5x^2=4-19xanswer=-4,1/5 2)Which quadratic equation has roots 7 and -2/3? answer=A A.2x^2-11x-21=0
1. 0 answers
2. 893 views
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
1. 0 answers
2. 764 views
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
1. 0 answers
2. 534 views
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
1. 0 answers
2. 1,121 views
1)Solve by factoring:5x^2=4-19xanswer=-4,1/5 2)Which quadratic equation has roots 7 and -2/3? answer=A A.2x^2-11x-21=0
1. 1 answer
2. 767 views
This will be a multiple post thing so please bear with me. If my answers are wrong then please explain I'll post my work as
1. 1 answer
2. 569 views
write an equation for the parabola with focus (1,3) and vetex (0,3)See the paragraph Analytic Geometry Equations. You will have
1. 0 answers
2. 742 views
Can someone please explain how to do these problems.1)write a polynomial function of least degree with intregal coefficients
1. 1 answer
2. 1,688 views
State the possible number of imaginary zeros of g(x)= x^4+3x^3+7x^2-6x-13this is how far Ive gotten:there are 4 zeros,3 positive
1. 1 answer
2. 1,951 views
Why does an ice cube melt @ room temperature?The melting point of water is zero degrees Celsius (32 degrees Fahrenheit). Room
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2. 968 views
why is a burn from steam potentially more serios than a burn from very hot water?Water at boiling temperature has a specific
1. 1 answer
2. 681 views
What is the main substance made during? Photosynthesis(Broken Link Removed)
1. 0 answers
2. 344 views
A square quilt for a child's bed has a border made up of 32 pieces with an area of x each, and 4 small squares with an area of 1
1. 0 answers
2. 787 views