Answer:
A. 9.7%
Step-by-step explanation:
margin of error:
z * ![\sqrt{\frac{p(1-p)}{N} }](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7Bp%281-p%29%7D%7BN%7D%20%7D)
n is sample size
z is the z score (for a 95% confidence interval you would use 1.96)
p is the sample proportion
to solve for 'p', remember that if a decimal value is given, use that. but if it is a whole number, then divide that number by the sample size, and substitute it into the formula.
in this case we are given 43% so 0.43.
in the formula :
1.96 * ![\sqrt{\frac{0.43(1-0.43)}{100} }](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7B0.43%281-0.43%29%7D%7B100%7D%20%7D)
if you calculate this you get around 0.09703 this is 9.7%
Add like terms: -2m-16m=16m-16m-9
-18m=-9
Divide both sides by -18: m=1/2
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Answer:
Their first difference's are constant. (Check y)
Answer:
D
Step-by-step explanation:
![2(\frac{7\times 6}{2})+3(13.1\times 7)](https://tex.z-dn.net/?f=2%28%5Cfrac%7B7%5Ctimes%206%7D%7B2%7D%29%2B3%2813.1%5Ctimes%207%29)
ANSWER IS D
If u were to draw this out, u would have the shape of a right triangle....with the legs being 3 miles and 4 miles......and a straight line would be the hypotenuse. So we use the pythagorean theorem.
a^2 + b^2 = c^2
3^2 + 4^2 = c^2
9 + 16 = c^2
25 = c^2
sqrt 25 = c
5 = c
so Jimmy is 5 miles from home