Answer: $12.4
Step-by-step explanation:
34.72/2.8 hours = 12.4 dollars/hr
Answer:
8 pie
Step-by-step explanation:
area of a circle is pie(radius squared)
radius is 4
4 squared is 16
divide by two because its a semi circle
Answer:
<h2>
0.05543</h2>
Step-by-step explanation:
The formula for calculating the margin of error is expressed as;
where;
z is the z-score at 95% confidence = 1.96 (This is gotten from z-table)
p is the percentage probability of those that watched network news
p = 40% = 0.4
n is the sample size = 300
Substituting this values into the formula will give;

Hence, the margin of error for this survey if we want 95% confidence in our estimate of the percent of T.V. viewers who watch network news programs is approximately 0.05543
How to subtract number with other numbers
Answer:
$25
Step-by-step explanation:
-James and two cousins (that's 3 people)
3x=30+(15x3)
x being the amount of money they had each
<u>3x</u>=<u>75</u>
3 3 (we divide by three to find the amount of money each person had)
x=25 (each person had 25 dollars)
CHECK:
3<em>x25</em>=30+(15x3)
75=75
<u><em>true</em></u>
FINAL ANSWER:
James and his two cousins each received 25 dollars.
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