Step-by-step explanation:
12. Cos 60° = 8/c
0,5 = 8/c
0,5 c = 8
c = 16
D² = V16²-8²
= V256-64
=V192 = V16×12 = 4V12
= 4V4×3 = 8V3
13. Cos 30° = 6/b
V3/2 = 6/b
V3 b = 12
b = 12/V3
b/Sin B = a /sin A
b/Sin90° = 6/ sin 60°
<u>b</u> = <u> </u><u> </u><u> </u><u>6</u><u> </u><u> </u><u> </u>
1 V3/2
b× <u>V3</u> = 6
2
b = 6× 2/V3
= 12/V3
Answer:1 1/6
Step-by-step explanation:
If u have to drive the car 60 miles per day, at 0.30 per mile, then u r spending
(60 x 0.30) = 18 per day on just driving.
plus the 26 per day for the rental
totals : 18 + 26 = 44 per day
44d = 350
d = 350/44
d = 7.95 rounds to 8 days
answer is 8 days
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