Answer:
The approximate margin of error = ± 0.1131607
Step-by-step explanation:
By margin of error = ± Z *
We assume 95% confidence interval. Thus Z = 1.96. Since the survey is about support or oppose, we assume equal proportion: 50% for and 50% against.
Hence, margin of error = ± 1.96* ((0.5*0.5)/75)^(0.5)
= ± 0.1131607
You can baby sit, walk dogs or dogsit!
you can mow lawns and take care of gardens!
Answer:
1)The rocket hit the ground at
2)The maximum height of the rocket = 12.468 feet
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given equation
y = -2 x² + 5 x + 7 ...(i)
Differentiating equation (i) with respective to 'x' , we get
Equating zero
⇒ -4 x +5 =0
⇒ -4 x = -5
⇒
<em> The rocket hit the ground at </em><em></em>
<u><em>Step(ii):</em></u>-
...(ii)
Again differentiating equation (ii) with respective to 'x' , we get
The maximum height at x =
y = -2 x² + 5 x + 7
<em>The maximum height of the rocket = 12.468 feet</em>
Answer:
a) 2 + 1 = 3
4 + 2 = 6
6 + 3 = 9
b) Yes
c) Yes, since you are adding b to two b, which results in 3b
Step-by-step explanation:
Hope that helps!
The answer is 12,405,490.