28 = x + (2x - 5)
28 = 3x - 5
+5 +5
33 = 3x
/3 /3
11 = x
On number is 11, the other is 17.
Check:
11(2)=22-5=17
Decompose each velocity in its i and j - coordinates.
1) River's velocity
3.5 m/s, west fo east = 3.5i + 0j
2) Luke's velocity
5m/s, 60° east of north
5* sin(60°) i + 5*cos(60°) j = 4.33 i + 2.5 j
3) Resultant velocity
[3.5i + 0j] + [4.33i + 2.5j] = 7.83i + 2.5j
resultant speed = √[ (7.83)^2 + (2.5)^2 ] = 8.22 m/s
angle = arctan(2.5 / 7.83) = 17.7° north of east (equal to 72.3° east of north).
X=4
4(4) + 1 =
16 + 1= 17
the answer is 17
Answer:
453.73cm³
Step-by-step explanation:
V
=
π
r
2
h
3
3.14×8.5²×6/3=453.73
1st
0.3/100*15000
=45
2nd
40/200*100
=20
=
