# Posts by Marissa

Total # Posts: 319

**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)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)...

**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**

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 needed thanks. 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-...

**math**

write an equation for the parabola with focus (1,3) and vetex (0,3) See the paragraph Analytic Geometry Equations. You will have a choice of equations, you did not state whether the axis of symettry was parallel to x or y axis. http://en.wikipedia.org/wiki/Parabola that was ...

**Algebra**

Can someone please explain how to do these problems. 1)write a polynomial function of least degree with intregal coefficients whose zeros include 4 and 2i. 2)list all of the possible rational zeros of f(x)= 3x^3-2x^2+7x+6. 3)Find all of the rational zeros of f(x)= 4x^3-3x^2-...

**Algebra**

State the possible number of imaginary zeros of g(x)= x^4+3x^3+7x^2-6x-13 this is how far Ive gotten:there are 4 zeros,3 positive and 1 negative If you've found four real zeroes, then there are no imaginary zeroes. You can also see that there are no imaginary zeroes ...

**science**

Why does an ice cube melt @ room temperature? The melting point of water is zero degrees Celsius (32 degrees Fahrenheit). Room temperature is more like 20 degrees C or 68 degrees F. Therefore, heat is tranferred from the warmer room air to the colder ice cube and it melts.

**science**

why is a burn from steam potentially more serios than a burn from very hot water? Water at boiling temperature has a specific heat of 1 calorie per gram. Steam, however, at the same temperature, has a heat of vaporization of 540 calories/gram. Thefore, steam condenses and ...

**simple question! i sware!!**

Can you tell me how the number twenty-eight (28) is in everyday life? Or in other words where can you find it in everyday life? thank you! i don't need a website just give me an idea... thanks! Look at the calendar. help.. I got that already but thanks anyways.. Thank you...

**math**

47*120=

**scocial studies**

saw dust!!!!!! DUH

**chemistry**

0.05c

**Calculus**

idk tell me

**genetics**

No it would contain4. It would contain 4 chromosomes. 2n means its a diploid cell which contains 8 chromosomes. Gamates are haploid cells therefore contain of a diploid. i do it like this though 2n=8 2Divided into 8=4..

**Science**

What is the main substance made during? Photosynthesis (Broken Link Removed)

**Math!!**

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 square inch each. The main part of the quilt is made of 64 squares with an area of x squared each. If the quilt is 4 ft by 4 ft, what are the ...

**english essays**

Ok..so i have to write an essay over heros..i have the intro but i cant seem to start the first paragraph. HELP PLZ! THANKS RizzA First of all, do you have an outline or plan for the main ideas of your paper. The intro is probably one of the last things you should write, ...

**heat**

5/9 degree fahrenheit