The study has the smallest margin of error for a 98% confidence interval is <span>The northern California study with a margin of error of 3.2%.
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12.5% of 140g is 17.5
add that to 140 and you get 157.5g
Let n = the number of nickels that Ari has.
Let p = the number of pennies that Ari has.
The total number of coins she has is 22.
n + p = 22
We have our first equation... But we another one to solve this.
Each penny is going to be $0.01 and a nickel is work $0.05.
And the total is $0.54
Our second equation. 0.05n + 0.01p = 0.54
n + p = 22
0.05n + 0.01p = 0.54
Multiply the top by -0.05
-0.05n - 0.05p = -1.1
0.05n + 0.01p = 0.54
The n terms cancel out.
-0.04p = -0.56
p = 14
Substitute p back into the top equation.
n + 14 = 22
n = 8
So, Ari has 8 nickels and 14 pennies.
Answer:
none of the above.
Step-by-step explanation:
Clearly something was printed incorrectly in this case because the only possible way to have a function even close to the one above that I know of is making a piece-wise function. The options below all make absolute value functions and look like a V shape. The graph above can almost not even be considered a function and is most definitely not a V shape.
