Answer:
x = 5
Step-by-step explanation:
Step 1: Subtract 2x from both sides.
4x−3−2x=2x+7−2x
<u>2x−3=7</u>
Step 2: Add 3 to both sides.
2x−3+3=7+3
<u>2x=10 </u>
Step 3: Divide both sides by 2.
2x/2 = 10/2
x=5
Answer:
The answer is shown below
Step-by-step explanation:
Let y(t) be the fraction of the population that has heard the rumor at time t and assume that the rate at which the rumor spreads is proportional to the product of the fraction y of the population that has heard the rumor and the fraction 1−y that has not yet heard the rumor.
a)

where k is the constant of proportionality, dy/dt = rate at which the rumor spreads
b)


At t = 2, y = 40% = 0.4
c) At y = 75% = 0.75

Answer:
0.49
Step-by-step explanation:
for it to be rational there should not be no decimal nor pi .
Answer:
the last one
Step-by-step explanation: