Evaluate the expression. r = <5, 9, -4>, v = <3, 3, -8>, w = <9, -6, -1>

v ⋅ w

<-15, -27, -32>
0
17
<27, -18, 8>

554.4

step-by-step explanation:

44*12.6=544.4

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x

answer4 to the second power is 16

and 4 to the third power is 64,