The trajectory of a projectile can be described by the equation h = –16t^2 + 8t + 9. How many seconds will it take until the projectile lands on the ground?

the answer is 45 i just did it on oddesy ware

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies

explanation:

remove parenthesis:

=

apply rule

=

multiply fractions:

=

=

divide:

=

mordancy.