Answer:
Carla pays $21.4 for the dress with tax.
Step-by-step explanation:
Here we are given that :
Price of dress = $20
Sales tax = 7%
Price of dress with tax = $20 + 7% of 20
Price of dress with tax = 20+1.4 = 21.4
Price of dress with tax = $21.4
Carla pays $21.4 for the dress with tax.
Answer:
You add up all the sides of the shape
Answer:
f = -3/4
Step-by-step explanation:
13f + 6 -f = -3
Combine like terms
12f +6 = -3
Subtract 6 from each side
12f+6-6 = -3-6
12f = -9
Divide each side by 12
12f/12 = -9/12
f = -3/4
To solve this, we use the z test.
The formula:
z = (x – u) / s
where x is sample value = 20, u is the mean = 15, and s is
the standard deviation = 2.5
z = (20 – 15) / 2.5
z = 2
Since we are looking for values greater than 20, this is
right tailed test. We use the standard distribution tables to find for P.
P = 0.0228
Therefore:
number of students = 100 * 0.0228 = 2.28
<span>2 to 3 students will get greater than 20 measurement</span>
