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Wisppah3474
23.07.2019 •
Mathematics
3x-4y=65? what is the value of x? when y=4
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Ответ:
3x - 4(4) = 65
3x - 16 = 65
2. Solve
3x - 16 = 65
+16 +16
3x = 81
3 3
x = 27
3. Check (Optional)
3(27) - 4(4) = 65
81 - 16 = 65
65 = 65
Ответ:
Ответ:
666.667 feet
Step-by-step explanation:
Slope = -1
Intercept = 10
y = -t + 10
y is the acceleration
Integrate y fornv
v = -t²/2 + 10t + c
At t=0, v=0 so c = 0
v = -t²/2 + 10t
Turns when v = 0,
-t²/2 + 10t = 0
t = 0, 20
Integrate v for s
s = -t³/6 + 5t² + c
At t = 0, s = 10
10 = c
s = -t³/6 + 5t² + 10
s at t=30,
-(30³)/6 + 5(30)² + 10
= 10m
(Back to starting point)
At t = 20,
Displacement in
-(20³)/6 + 5(20)² + 10
= 343.333
Total distance = 2(343.333-10)
= 666.6667