Hurry please Find the difference. Express the answer in scientific notation. (8.64 times 10 Superscript 20 Baseline) minus (7.83 times 10 Superscript 20 Baseline) 8.1 times 10 Superscript 19 0.81 times 10 Superscript 20 8.1 times 10 Superscript 21 0.81 times 10 Superscript 40

Which of the following is true for the relation f(x)=2x^2+1

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample