I hope this helps you
x-y=-2 y=x+2
2x+y=8
2x+x+2=8
3x=8-2
3x=6
x=2
y=x+2 y=2+2 y=4
Answer:
The number of citizens that should be included in the sample is 151.
Step-by-step explanation:
The (1 - <em>α</em>)% confidence interval for population mean is:
The margin of error for this interval is:
The information provided is:
Confidence level = 95%
<em>α</em> = 5%
Compute the critical value of <em>z</em> for <em>α</em> = 5% as follows:
*Use a <em>z</em>-table.
Compute the sample size required as follows:
Thus, the number of citizens that should be included in the sample is 151.
If they went on a 9 mile hike and stopped every 3 miles, they would stop 3 times during the hike.
The statement gives you the function that models the Area as a function of angle theta, and is telling the value of this angle.
Then, you only need to replace the value of the angle in the function, to obtain the requested area.
<span>A(Θ) = 16 sin Θ • (cos Θ + 1).
Θ = 60°
A(</span>60°<span>) = 16 sin(</span><span>60°) * [cos(</span><span>60°) + 1 ] = 16 * (√3) / 2 * [1/2 + 1] = 8(√3) * 3/2 = 12√3 ≈ 20.79
Answer: 20.8 in^2 </span>
product means multiply, sum means add
so add 5+k = (5+k)
now multiply that by 6 to get
6(5+k)