Questions by Elmer Dantas

Questions by Elmer Dantas

How many solutions are there to the equation 3x-2y=-60? What do all the solutions have in common?

asked Aug 15, 2020

1 answer

5 votes

60.7k views

A 0.0140 kg bullet traveling at 205 m/s east hits a motionless 1.80 kg block and bounces off it, retracing its original path with a velocity of 103 m/s west. What is the final velocity of the block? Assume

asked Apr 23, 2020

1 answer

0 votes

124k views

Which sentence ending corrects the sentence fragment below? After I play soccer O to get some exercise Oor watch football O my legs ache O with my friends

asked Apr 17, 2020

1 answer

3 votes

210k views

In an exothermic reaction what is true of enthalpy? A) it has increased B) it has decreased C) it has remained unchanged D) it has a minimum doubled

asked Dec 1, 2019

1 answer

5 votes

97.5k views

Consider the chemical equations shown here. CH4(g)+CO2(g)+2H20(g)2H2o(g)2h20(i) What is the equation for the overall reaction obtained by adding these equations?

asked Jul 15, 2019

2 answers

1 vote

26.7k views

Select all of the answers that apply. what are the two main ingredients in air? oxygen carbon dioxide nitrogen helium hydrogen

asked Dec 5, 2018

2 answers

2 votes

38.1k views

Which of the following could be considered a negative side effect to instant information? A. the creation of the Associated Press B. the Panic of 1857 C. the Industrial Revolution D. the Transcontinental

asked Aug 13, 2018

2 answers

5 votes

70.6k views

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