Answer:
18s+20b<_150
Step-by-step explanation:
He can buy 5 basketballs and 2 soccer balls. This equation is correct because 18x2 is 36 and 20x5 is 100. So that will be a total of $100. This makes the equation 100<_150. You can infer that this equation is true.
Answer:
1,496 new car buyers
Step-by-step explanation:
The sample size n in Simple Random Sampling is given by
where
z = 1.645 is the critical value for a 90% confidence level (*)
p= 0.33 is the population proportion.
e = 0.02 is the margin of error
so
<em>(*)</em><em>This is a point z such that the area under the Normal curve N(0,1) inside the interval [-z, z] equals 90% = 0.9</em>
It can be obtained in Excel or OpenOffice Calc with
<em>NORMSINV(0.95)</em>
If you add $15 + $27 because that's how much it costs for each student, you get $42. Then you divide $714 by $42, you get 17 and that's how many students are in the class this month.
Answer:
ABC Fence Company charges $35 more per foot of fencing.
Step-by-step explanation:
ABC charges $35 more per foot of fencing.; The slope of each function represents the rate per foot of fencing.
Reliable Fence Company: y = $225x + $8,000 → $225 per foot of fencing. ABC Fence Company:
$29,200 − $24,000
20
= $260 per foot of fencing
$260 − $225 = $35; therefore, ABC charges $35 more per foot of fencing.
