Answer:
t = 2.5 s
Step-by-step explanation:
h(t)=-16t^2 +80t+96
height will be greatest when the derivative (velocity) is zero
h'(t) = v(t) = -32t + 80
0 = -32t + 80
32t = 80
t = 80/32 = 2.5 s
notice that 0 = -32t + 80 is just a version of the kinematic equation
v = u + at
where v is final velocity at the top of the arc or zero
u is the initial upward velocity or 80 ft/s
a is gravity or -32 ft/s²
t is time in seconds
Answer:
the right answer is the third one
Answer:
A nonresponse might lead to a bias in the study due to the fact that the counselor may assume that those who did not reply to the email may have tried alcohol and they didn't want him(the counselor) to know.
Step-by-step explanation:
In statistical research, a bias is said to occur when systematic errors are introduced into sampling or testing by selecting or favoring one outcome over other outcomes.
Now, applying that definition to this question, we can say that a nonresponse might lead to a bias in the study due to the fact that the counselor may assume that those who did not reply to the email may have tried alcohol and they didn't want him(the counselor) to know.
Answer:
Answers 3 ((3x4)x2) and 6 (3x(4x2)) are equal to eachother.
Step-by-step explanation:
1. 3(4+2)=18
2. 3+(4x2)=11
3. (3x4)x2=24
4. (3x4)+2=14
5. (3+4)+2=9
6. 3x(4x2)=24
3. and 6. are the only two answers that have the same outcome, therefore equaling eachother.
