Answer:
2(x+4)-1=2x+7 is true for everything
Step-by-step explanation:
2(x+4)-1
2(x+4)
=2x+2*4
=2x+8
=2x+8-1
=2x+7
2x+7=2x+7
2x=2x
2x-2x=2x-2x
0=0
true for all x
Answer:
at 2/3 seconds
Step-by-step explanation:
S1(t) = t³ + 2
Average speed, dS1/dt = 3t²
S2(t) = t²
Average speed, dS2/dt = 2t
The distance between the objects is
dS1/dt - dS2/dt
= 3t² - 2t
The time the distance between the two object is at minimum is when the distance is 0
That is, when
3t² - 2t = 0
t(3t - 2) = 0
t = 0 or 3t - 2 = 0
t = 0 or t = 2/3
Answer:
the money spent by a buyer to purchase a product
Answer:
4.7 :)
Step-by-step explanation:
Greeting's!
<span>B. 279
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