Answer:
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Step-by-step explanation:
Answer:900 and 1558.8
Step-by-step explanation:
v=velocity=1800 ft
Angle= 60°
The formula to find magnitude of horizontal vector is;
|H.Vector| = v × cos (tita)
|H.Vector| = 1800 × cos(60°)
|H.Vector| =1800 × 0.5
|H.Vector| = 900
Then vertical vector:
|V.Vector| = v × sin (tita)
|V.Vector| = 1800 × sin (60°)
|V.Vector| =1800 × 0.8660
|V.Vector| = 1558.8
Answer:
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Step-by-step explanation:
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Answer:
7/2
Step-by-step explanation:
2x+5=12
2x=7
x=7/2
Let L be the low copper alloy and H be the high copper alloy.
We need 0.15L + 0.60H = 0.42 and L + H = 100
L=100 - H
Substituting this into the second equation for L, we get:
0.15(100-H) + 0.60H = 0.42(H+L)
15 - 0.15H + 0.60H = 0.42(H+100-H)
15 + 0.45H = 0.42(100)
0.45H = 42 - 15 = 27
H = 27/.45 = 60 lbs
Back substitution, L = 40 lbs.