Answers created by David G.

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• A couple travels 420 miles to drop their daughter off at summer camp. The trip back has a short cut and is only 360 miles, and the gas mileage is 50% better due to a lighter load. How do you write an equation for the total gas used, and simplify?
  
• What is the amount of energy needed to start a chemical reaction?
  
• Suppose that premium gasoline is selling for about $2.98 a gallon using the fact that 1L equals 1.057 quarts. determine the price of the gasoline in dollars per liter?
  
• What is the kinetic energy of an object with a mass of #6# #kg# that has been in freefall for #8# #s#?
  
• What is the equations of a line that is parallel to y = -3x + 6 and contains the point (-3,-5)?
  
• Susan is 11 years younger than Tara. Together they are 27. How old is each of them? Deneb has triple the amounts of stamps as Rick. The difference in the number of stamps they have is 14. How many stamps does each of them have?
  
• During the summer, Andrew worked for 6 days each week. He worked 8 hours each day. In a week, he earned $360. How much was he paid for each hour of work?
  
• Which has more momentum, a #6# #kg# object moving at #6# #ms^-1# or a #3# #kg# object moving at #10# #ms^-1#?
  
• A box with an initial speed of #5# #ms^-1# is moving up a ramp. The ramp has a kinetic friction coefficient of #2/5 # and an incline of #pi /6 #. How far along the ramp will the box go?
  
• What conditions are necessary for acceleration to occur?
  
• Balancing Redox Reactions?
  
• How does force affect friction?
  
• What two ideas are used to describe the motion of light?
  
• A box on the floor with a mass of 2 kg is under the effect of forces F1, F2 and F3 as it shows below. If the box moved a distance of 3 m. Calculate the work done on the box? HELP please.
  
• Word form for 3,041,604,760.15?
  
• COMPLETE COMBUSTION of #C_(14)H_(16)O_3# to #CO_2# and #H_2O#. You have #315.0000# grams of #C_(14)H_(16)O_3#. What is the limiting reagent? How many grams of #CO_2# are generated? How many grams of #H_2O# are generated?
  
• An object with a mass of #6# #kg# is hanging from a spring with a constant of #12# #kgs^-2#. If the spring is stretched by # 2# #m#, what is the net force on the object?
  
• Hydrogen peroxide (#H_2O_2#), is sold commercially as a 3.0% (mass/volume) aqueous solution. If you buy a 500 ml bottle of hydrogen peroxide, how many grams of #H_2O_2# are dissolved in the bottle?
  
• After Lily's graduation party she had half of her cake left. She shared it with her sister Kala and her brother Logan. How much cake do they each get?
  
• A line passes through #(4 ,3 )# and #(7 ,1 )#. A second line passes through #(1 ,1 )#. What is one other point that the second line may pass through if it is parallel to the first line?
  
• How do you convert 200° to radians?
  
• Britney has already walked 8 kilometers this week, plus she plans to walk 1 kilometer during each trip to school. After 3 trips to school, how many kilometers will Britney have walked in total?
  
• Find the Coulomb force between two electric charges of #4 xx 10^(-6)# #C# and #5 xx 10^(-6)# #C#, if the distance between the two charges is #2# #cm#?
  
• How can you write an expression using variables #B# and #C# to find the perimeter of the quad. The quadrangle has the following lengths: #B#, #C#, #B-2#, #C-B#. Step 2 if #B=11# and #C=16# what is the perimeter?
  
• How do you write the phrase as a variable expression "5 less than 4 times a number"?
  
• A charge of #5# #C# is passing through points A and B on a circuit. If the charge's electric potential changes from #28# #J# to #15# #J#, what is the voltage between points A and B?
  
• How do you factor the trinomial #c^6 + c^5 - 156c^4#?
  
• #(x^(-4/7))^7# what is the simplest form?
  
• Please solve q 82?
  
• How do you find 3 consecutive odd integers whose sum is 51?
  
• How can I find the amount of solute in a solution if only the volume of solution is given ?
  
• How do you graph #y=-x+2# using slope intercept form?
  
• How can you compare the mass and charge of protons, neutrons and electrons?
  
• How much baseboard is needed to go around a rectangular room that measures #18# feet by #13# feet. If baseboard costs #$1.87# per foot, what is the total cost needed for materials?
  
• How can I balance this Chemistry equation? #Cu+HNO_3 -> Cu(NO_3)_2 + NO_2+ H_2O#
  
• How do you write #2 (5.7 times 10^2)# in standard form?
  
• What is the probability of spinning a number less than 3?
  
• How is the law of cosines related to the pythagorean theorem?
  
• How do you factor #y = 4 (x - 4)^2 + 4# I have been working on this for days and I can’t find the answer. Can anybody help me???
  
• Why is fission easier than fusion?
  
• If #h(x)=3^(2x)# and #f(x)=x-2#, how do you find #h(f(-3))#?
  
• If a number is added to its square, the result is 56. How do you find the number?
  
• How do you solve the multi-step equation #29-3s=23(2s-3#)?
  
• For her cell phone plan Heather pays $30 per month plus $0.05 per text. She wants to keep her bill under $60 per month. What inequality represents how many texts Heather can send each month while staying within her budget?
  
• The gallons of a water used to take a shower vary directly with the number of minutes in the shower. If an #8# minute shower uses #48# gallons of water, find the constant of variation?
  
• What is the standard form of the equation of a circle with a center (4, 1) and a radius of 6?
  
• Find the height of a triangle with a base of 7 cm and area 14 cm squared?
  
• How do you determine if the equation #y = (2)^x# represents exponential growth or decay?
  
• How do you find the slope parallel to #3y=-2x+5#?
  
• How do you solve #2/(3+x) = 25#?
  
• When is the exponent in scientific notation negative?
  
• How do you simplify the following expression?
  
• Write a function rule for the area of a rectangle whose length is 7 ft more than its width. What is the area of the rectangle when its width is 12 ​ft? Write a function for the area A of the rectangle using the independent variable width W.
  
• How do I find the Y coordinate? #y = -2x+9# and #-x-y=-1#
  
• Why is laser light used with fiber optics?
  
• How do you express #2650000# in scientific notation?
  
• What is #x# in the equation #5x^2 = 49#?
  
• How do you solve #18=9(x+5)#?
  
• Let #f(x)= -4x + 7# and #g(x)= 10x-6#. What is #f(g(x))#?
  
• A line passes through #(6 ,2 )# and #(5 ,7 )#. A second line passes through #(3 ,8 )#. What is one other point that the second line may pass through if it is parallel to the first line?
  
• You have been hired by a museum to make a scale drawing poster of a painting to sell at the gift shop. The painting is #65# in high by #105# in wide. You are asked to use a #1# in = #5# in scale. What will the dimensions of your poster be?
  
• Find the area of the kite in cm2. Round to 2 decimal places. the area?
  
• Find the slope of a line that passes through the points (4,-6) and (7,2)?
  
• The Moon orbits the Earth every #27.3# days. Determine the angular velocity in degrees. Help?
  
• A spring with a constant of #6# #kgs^-2# is lying on the ground with one end attached to a wall. An object with a mass of #3# #kg# and speed of #9# #ms^-1# collides with and compresses the spring until it stops moving. How much will the spring compress?
  
• How do you find the length of #a# and #b# of a right triangle using angles of #A# and #B# and the distance from #c# to #C#? The angles of #A# and #B# are #45# degrees with #C# being #90# degrees and the distance from #C# to the hypotenuse (#c#) is #22^"#.
  
• How do you graph and list the amplitude, period, phase shift for #y=0.5sinx#?
  
• How do you solve #f + 2 = -4#?
  
• Tori has #1/2# pound of sugar in her cabinet. Her cake recipe calls for #2/10# of a pound of sugar. How many cakes can she make?
  
• How does Kepler's Law contradict circular motion?
  
• A wave of period #5.0# #ms# travels through a medium. The graph shows the variation with distance #d# of the displacement #x# of points in the medium. What is the average speed of a point in the medium during one full oscillation?
  
• A particle of mass #m# moving with speed #v# hits elastically another stationary particle of mass #2m# inside a smooth horizontal circular tube of radius #r#. The time after which the second collision will happen?
  
• An object is at rest at #(5 ,2 ,8 )# and constantly accelerates at a rate of #2/5# #ms^-2# as it moves to point B. If point B is at #(6 ,3 ,2 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.
  
• The length of a rectangle is twice as large as its width, and its perimeter is #210# #m#. What are the length and width of the rectangle?
  
• How do you solve #8m - 5.5= 10.1#?
  
• Question #a3fcc
  
• What is the volume of a right cylinder with radius 3 cm and height 5 cm?
  
• What number do we need to divide #2# by to get #90# as our solution?
  
• What is the slope and #y#-intercept of #x+y=2#?
  
• Question #13bdf
  
• How do you solve this physics problem ?
  
• How do you graph the parabola #f(x)=-3x^2+x-5# using vertex, intercepts and additional points?
  
• An object is at rest at #(7 ,3 ,9 )# and constantly accelerates at a rate of #7/4 ms^-2# as it moves to point B. If point B is at #(2 ,5 ,8 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.
  
• A purse contains $2.45 in dimes and quarters. There are two more than twice as many dimes as there are quarters. How many of each coin are in the purse?
  
• Question #1c608
  
• Question #7a137
  
• Given a wavelength of 1500 nanometers, how much energy does the wave have? What type of radiation would this wave be?
  
• David eats a basket of chocolates and cake that contains #20,000# calories of energy, then regrets it and thinks about how far up a mountain he will need to climb to work off this energy. Can you give him an answer?
  
• Name one chemical property of carbon monoxide and link it to one of its health or environment affects?
  
• What is Newton's Second Law?
  
• In 1979, a river was #27# feet below a bridge. By 1989 it was only #18# feet below. Assuming the rate of rise is constant, write an expression for the distance from the bridge to the river. In what year will the river reach the height of the bridge?
  
• A vehicle requires a force of #300# #N# to move #30# #m# at constant velocity in #3# #s#. What power does the vehicle's engine exert?
  
• A sample of gas has a particular volume at #0^o# #C#. To what temperature must it be heated, if the pressure is kept constant, to double its volume?
  
• Question #36cf7
  
• Correct one: Solve for x, #log_2 (log_3x) = 2#?
  
• An object is made of a prism with a spherical cap on its square shaped top. The cap's base has a diameter equal to the lengths of the top. The prism's height is # 7 #, the cap's height is #4 #, and the cap's radius is #8 #. What is the object's volume?
  
• How does the path of a light ray change when it moves from a less-dense into a more-dense medium? What do we call the ratio of the speed of light in a denser medium to its speed in a vacuum?
  
• An object is at rest at #(1 ,2 ,1 )# and constantly accelerates at a rate of #1/3# #ms^-2# as it moves to point B. If point B is at #(4 ,4 ,5 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.
  
• A square has an area of #225# square units. What is its perimeter?
  
• What is the ∆H value for this thermo chemical equation? Full question in the description box below.
  
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