Answer:
7: 45.2 (rounded from 45.21)
8: 114.5 (rounded from 114.45)
9: 115.9 (rounded from 115.86)
10: 105.6 (rounded from 105.56)
and of course the unit is cm3
Step-by-step explanation:
Answer:
4 3/4*2.50
19/4*2.50
=B] $11.88
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
We can use the law of cosinse:
= 
− 2ab cos(C)
Suppose the two sides are a and b, and the angle betweent them is C.
= 
− 2*3*4 cos(60)
We can simplify this to get =25-12=13
c=
Answer choice B
Answer:
Additional fee or hour = $8.5
y = $2 + 8.5x
Step-by-step explanation:
Given that :
Total paid = $36
Number of hours = 4
Initial rental fee = $2
Additional fee per hour = a
Total amount = initial rental fee + additional fee per hour * number of hours
36 = 2 + 4a
36 - 2 = 4a
34 = 4a
a = 8.5
Hourly fee = $8.5
Therefore, the cost formula
y = initial fee + regular fee * number of hours
y = $2 + 8.5x
