tan(angle) = opposite leg / adjacent leg
tan(angle) = 26 / 14.5
angle = arctan(26/14.5)
angle = 60.85 degrees.
The answer is C.
Answer:
5 mile/8 km 238 357
10 mile/16.1 km 476 714
15 mile/24.2 km 714 1,072
20 mile/32.2 km 953 1,429
Step-by-step explanation:
X=number of books that cost 0.60
y=number of books that cost 0.75
x+y=16
0.6x+0.75y=10.95
solve
multiply second equation by 10 for nicity
6x+7.5y=109.5
multiply first equesiotn by -6 and add to second
-6x-6y=-96
<u>6x+7.5y=109.5 +</u>
0x+1.5y=13.5
1.5y=13.5
divide both sides by 1.5
y=9
sub back
x+y=16
x+9=16
minus 6
x=7
seven 0.60 books and nine 0.75 books
2(9x + 3) + 5x = 48 + 2x
18x + 6 + 5x = 48 + 2x
23x + 6 = 48 + 2x
23x - 2x = 48 - 6
21x = 42
x = 42/21
x = 2