Answer:
sin 30=opposite/hypotenuse=7/2/x
1/2*x=7/2
x=7/2*2
x=7
y=
$60 - $10 = $50
$50 / 20 = $2.5 ea.
Answer:
10 buildings
Step-by-step explanation:
<em>Incomplete question: Missing Attachment</em>
<em>I will answer your question with the attached histogram</em>
<em></em>
Required
Determine the number of tall buildings that had more than 60 floors
The histogram can be interpreted as follows:

More than 60 floors is represented with the following group: 61 - 80
The frequency of group 61 - 80 is 10
<em>Hence, 10 buildings had more than 60 floors</em>
This is the answer its easy just simplify the inequality