Answer:
$70.56
Step-by-step explanation:
Lets convert the mixed number (trip length) to decimal.
We know 3/5 (by long division) is 0.6, so 705 3/5th = 705.60 miles
Now, let's come to the problem:
1 gallon = 28.8 miles (mileage)
or
$2.96 = 28.8 miles
To find cost per mile, we divide:
That means, it costs $0.10 per mile
Since we want to travel 705.60 miles, we multiply to find the cost:
$0.10 per mile * 705.60 miles = $70.56
wqual because you round 0.6 to 1 and 0.4 to 0 so 2+1 is 3
Answer:
90. 04987916
Step-by-step explanation:
Let HI be a
and GH be c
and GI be b
and <GHI be B
Using the law of Cosines,
b^2= -2ac cos (B) + c^2 + a^2
= -2(42)(60) cos (123)+60^2+42^2
= -5040 cos (123) +3600+1764
= -5040(-0. 544639035) +5364
= 2744. 980736+5364
b^2= 8108. 980736
b= Sqrt ( 8108. 980736)
b= 90. 04987916
The given expression is 
We need to determine the expression as an equivalent algebraic expression involving only x.
The expression has to be expressed as an algebraic expression in x.
Thus, we have;
Using the identity 
in the above expression, we get;
Simplifying, we get;
![\cos \left(2 \cos ^{-1} x\right)=2[cos(cos^{-1}x)]^2-1](https://tex.z-dn.net/?f=%5Ccos%20%5Cleft%282%20%5Ccos%20%5E%7B-1%7D%20x%5Cright%29%3D2%5Bcos%28cos%5E%7B-1%7Dx%29%5D%5E2-1)
Hence, the expression can be written as 
