Answer:
Step-by-step explanation:
It would be 50 because the 5 is in the tens spot
Substitute 5 and -5 into the equation and solve.
3x +5x = 8x
3(5) + 5(5) = 8(5)
15 + 25 = 40
40 = 40 (True)
3(-5) + 5(-5) = 8(-5)
-15 + (-25) = -40
-40 = -40 (True)
C is the correct answer.
Sorry the easiest way is
8x = 8x and plug in 5 and (-5). Its the same but takes away some addition.
Answer: work is done in stretching it from 5.0in. to a length of 12.8in is 36 lb.In
Step-by-step explanation:
We know that
f(x) = kx
given that;
Natural length L = 5
x = 8.4 - 5 = 3.4
force F = 4.0 lb
f(x) = kx
we substitute
4 = k × 3.4
k = 4 / 3.4
k = 1.1764 = 20/17
Now work done from natural length to 12.8
x = 12.8 - 5 = 7.8
work done = ₀∫^7.8 f(x) dx
= ₀∫^7.8 kx dx
we substitute value of k
= ₀∫^7.8 (20/17)x dx
= 20/17 [ x²/2 ]
= 20/17 [ (7.8)²/2 - 0 ]
= 1.1764 × 30.42
= 35.786 ≈ 36 lb.In
Therefore work is done in stretching it from 5.0in. to a length of 12.8in is 36 lb.In
Answer:
Step-by-step explanation:
f(x) = { 0, x<0; 0 <= x, (x +3) * 1000000 }
(Note the graph ought to flatten to zero for x < 0)
