Answer:
a.) Between 0.5 and 3 seconds.
Step-by-step explanation:
So I just went ahead and graphed this quadratic on Desmos so you could have an idea of what this looks like. A negative quadratic, and we're trying to find when the graph's y-values are greater than 26.
If you look at the graph, you can easily see that the quadratic crosses y = 26 at x-values 0.5 and 3. And, you can see that the quadratic's graph is actually above y = 26 between these two values, 0.5 and 3.
Because we know that the quadratic's graph models the projectile's motion, we can conclude that the projectile will also be above 26 feet between 0.5 and 3 seconds.
So, the answer is a.) between 0.5 and 3 seconds.
Answer:
Step-by-step explanation:
Using annuity, each sisters saving can be calculated.
Annuity formula:
Fv = PMT (( 1 + i)^n - 1) / i
where Fv is the future value (amount), PMT is the periodic payment ( $2000),
i is the rate per period ( 7%) and n is the number of payments.
Using the above formula to calculate each sister savings after their respective years of savings
Jane ( between 25 - 35, with n = 10 years)
Fv = 2000 (( 1 + 0.07)^10 - 1 ) / 0.07 = $ 27634.3
Joan ( between 35 - 65, with n = 30 years)
Fv = 2000((1 + 0.07)^30 - 1) / 0.07 = $ 188914
Joan actually have invested more since over 30 years she has invested $60000 while Jane on the other hand invested for 10 years which equals $20000 and Joan has more money after retirement. Going by the result it will make sense for Jane to emulate Joan or increase her number of years of saving in other to improve her retirement saving significantly close to Joan or even more.
Answer:
Option: D is the correct answer.
D.
Step-by-step explanation:
We are given set of data points as:
x y
50 10
30 11
11 5
35 9
50 12
20 3
90 7
By plotting all these point in a scatter plot we see that the equation that best fits the data is a curve or a parabola that opens down and attains it's maximum value and the equation as is obtained on the regression calculator is: