chelsie

Popular questions and responses by chelsie
  1. algerba

    What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = −2x2 − 3x + 8, and what does it mean about the number of real solutions the equation has? What are the solutions to the quadratic equation 4(x + 2)2 = 36 Mischa wrote the

    asked on May 25, 2016
  2. chemistry

    Predict how the entropy of the substance is affected in each of the processes. A. H2O(l,300K)⟶H2O(s,273K) B. O2(g,300K)⟶O2(g,800K) C. Ar(l)⟶Ar(g)

    asked on April 29, 2020
  3. physics

    player kicks football from ground level with velocity of32 m/s at an angle of 40 degrees above horizontal. What is hang time of football? How far does the ball travel horizontally before hitting the ground? What is the maximum height that the ball reaches?

    asked on November 29, 2010
  4. chemistry

    Fluorine gas can react with ammonia gas to produce dinitrogen tetrafluoride gas and hydrogen fluoride gas. This reaction is described by the following balanced equation: 5 F2 (g) + 2 NH3 (g) N2F4 (g) + 6 HF (g) What mass of hydrogen fluoride gas is

    asked on June 5, 2018
  5. Calculus

    Find f(x+h) for f(x)= x^2 - 2x - 3

    asked on October 11, 2011
  6. calculus

    Let f(x)+10x^2+9x+10. Find f(x+h)-f(x).

    asked on September 27, 2011
  7. Math

    Given that sin alpha=4/sqrt65, pi/2

    asked on June 13, 2011
  8. science

    if a satellite moves in a circular orbit around a planet, the satellite has a constant: momentum velocity OR acceleration

    asked on January 25, 2011
  9. physics

    baseball thrown horizontally takes 1.1 seconds to reach the ground. What is the height at which the ball was thrown?

    asked on January 11, 2011
  10. science

    Harry walks 1.5 km/h to the mall. Earl walks 2.75 km/h to the mall. What is Earl's relative velocity with respect to Harry?

    asked on January 11, 2011
  11. science

    Harry walks 1.5 km/h to the mall. Earl walks 2.75 km/h to the mall. What is Earl's relative velocity with respect to Harry?

    asked on January 11, 2011
  12. science

    the separation of the foci of an ellipse that describes a planet's orbit derermines A eccentricity of the orbit B period of the orbit C size of the orbit D all of the above. I think it is A because the closer the foci, the more circular versus elliptical

    asked on December 8, 2010
  13. physics

    100 g mass is attached to a string 75 cm long. swings in a horizontal circle. The mass goes around its path once every 0.8. seconds. What is centripetal acceleration of the object? What is the tension in the string?

    asked on December 2, 2010
  14. physics

    Find the acceleration down the ramp: skateboarder starts from rest at the top of a 12.5 m slick ramp that makes a 25 degree angle with the horizontal. (coefficient of rolling friction is negligible). Combined mass of skateboarder and skateboard = 75 kg.

    asked on November 20, 2010
  15. 12th grade

    Suppose an unknown substance has a melting temperature of 1,200 degrees Celsius and a density of 16.7 g/cm3. However, the different individual atoms that make up the element have very different melting temperatures and densities. The unknown substance is

    asked on November 19, 2010
  1. chemistry

    So for C, dS would increase since gas form is less structured than liquid?

    posted on April 29, 2020
  2. MATH

    40 hours * $9.25 = $370 $370 * 4 weeks = $1480 then, calculate and then subtract the involuntary deductions (1480*.0765) + (1480*.12) + (1480*.08) = $409.22 $1480 - $409.22 = $1070.78 (your net income for a month) to get the net income of one week, divide

    posted on April 4, 2019
  3. math

    I don't know the answer to that

    posted on March 15, 2012
  4. 5th grade

    i need help obn my homework

    posted on August 24, 2011
  5. 5th grade

    220 angle duh im 15

    posted on October 27, 2010
  6. algebra

    um. i don't know

    posted on October 9, 2008
  7. algebra

    the amount of money earned on a job is diretly proportional to the number of hours worked. if $76 is earned for h of work, how much is earned for 34 h of work.

    posted on October 9, 2008