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A boy pushes his little brother on a sled. The sled accelerates from rest to (4 m/s). If the combined mass of his brother and the sled is (40.0 kg) and (20 W) of power is developd, how long time does boy push the sled?16s300s15s23s Which energy store is increased when an object is heated? the only reason i know cardiants is because of mincraft PLEASE HELP!!!Write the factored form of the least common denominator needed to simplify this expression What is the observation of heating of iodine crystals 4.2 To buy a new car is not a very good investment. In the first year the car willdecrease in value by 25%.4.2.1If the car costs R200 000, what will it be worth after 1 year? If the amplitude of a sound wave is increased by a factor of four,how does the energy carry by the sound wave in each time interval change? Dehydration synthesis leads to WICH formation Mt vt chuyn ng trn u c chu k T = 0,25 s. Tnh tn s chuyn ng f ca vt? The following data represents the number of days absent and the final grade for a sample of college students in a general education course at a large state university. No. of absences 0 1 2 3 4 5 6 7 8 9 Final Grade 89.2 86.4 83.5 81.1 78.2 73.9 64.3 71.8 65.5 66.2 a) Which variable is the explanatory variable? b) Draw a scatter plot and describe your scatter plot (Direction, Strength, Form). c) Compute the correlation coefficient d) Does a linear relation exist between the number of absences and the final grade? Justify your answer. e) Write out the least-squares regression line equation. f) Compute and draw the residual (on your scatter plot) for a student who misses 5 class meetings. g) Explain the slope in context. h) Is the y-intercept meaningful in this situation? Explain. i) Compute and interpret the coefficient of determination. j) Construct a residual plot to verify the requirements of the least-squares regression model. Trong giai on bin ng kinh t ti Vit Nam nm 2008 , trong hon cnh lm pht tang cao , c kin cho rng s lng ngn hng thng mi ti Vit Nam qu nhiu (39 ngn hng , tng ng s ngn hng ca Indonesia, nhiu hn Malaysia, Philipines ), to ra lng tin bt t ln , gp phn lm tng t l lm pht . Anh/ Ch hy nu nhn xt ca mnh v kin ny If the car falls down the side of the cliff, what is happening to the gravitational potential energy of the falling car? (Assume the bottom of the cliff is zero) list 5 procedures done in nail preppingneed help _ On each trial of an experiment, a participant is presented with a constant soft noise, which is interrupted at some unpredictable time by a slightly louder sound. The time it takes for the participant to react to the louder sound is recorded. The following list contains the reaction times (in milliseconds) for trials of this experiment.170, 206, 218, 232, 238, 248, 254, 264, 268, 281, 281, 281, 316, 320, 320, 329, 336, 365, 399, 400, 438, 438, 452, 524, 724, 8061. measures of central tendency do not exist for this data set?a. Mean b. Median c. Mode d. None of these measures2. Suppose that the measurement 806 (the largest measurement in the data set) were replaced by 1169. Which measures of central tendency would be affected by the change? Choose all that apply. Several years ago, Castles in the Sand Inc. issued bonds at face value of $1,000 at a yield to maturity of 8%. Now, with 7 years left until the maturity of the bonds, the company has run into hard times and the yield to maturity on the bonds has increased to 12%. What is the price of the bond now If a writer is arguing that capitalism has more benefitsthan socialism, then this evidence functions as aO claimO counterclaim.topic.O conclusion The mean score was 72. The standard deviation was 7 percentage-points. Based on this information, what is the bestapproximation for the number of students who scored 79 or better? Jason works 22 hours a week and has a pre-tax paycheck of $660 per week. Last week he had to work 34 hours, how much will his pre-tax paycheck be? Given a quadratic function, y = ax + bx+c, what happens to the graph when "a" is positive?a. the parabola opens down, the vertex is the C. the parabola opens up, the vertex is themaximum valuemaximum valueb. the parabola opens down, the vertex is the d. the parabola opens up, the vertex is theminimum valueminimum value Find the equation of the circle that has a diameter with endpoints located at (-3,6) and (9,6).