V = 4πr³/3
Substituting,
V = (4/3)π(3 cm)³
V = 36π cm³
Answer:
No he was not correct
Step-by-step explanation:
The Equation is 15 x + 6 = 14 x + 5
now By the steps brandon used let us solve the question
Step 1 : Add 14 negative x tile to both sides
which will make the equation
15x + 6 - 14x = 14x + 5 - 14 x
x + 6 = 5 .......(ii)
Step 2: Add 5 negative unit tiles to both sides of equation (ii)
which will make the equation
x +6 - 5 = 5 - 5
x + 1 = 0 .........(iii)
Step 3: x =1 is the answer
but from equation (iii) we see that
x + 1 =0
by adding -1 on both sides
x + 1 -1 = 0-1
x = -1
So the step three done by Brandon is wrong which explains he was not correct
x = 3.
Plug in 3 for x in the equation
14(3) + 64
Remember to follow PEMDAS. First, multiply 3 with 14
3 x 14 = 42
Finally, add 64
42 + 64 = 106
106 is your answer
hope this helps
Answer:
60.5 milligrams per square centimeter First, determine how many half lives have expired by dividing the time by the half-life. So: 55/20 = 2.75 That means that only 2^(-2.75) = 0.148650889 = 14.8650889% of the original substance remains. So just divide the amount remaining by 0.148650889 to get the original amount. 9 / 0.148650889 = 60.5445419 So originally, there was 60.5 milligrams per square centimeter 55 years ago.
Let the number of miles be x.
Then, x miles cost 0.6x.
The initial fixed fee is $5, and the toll is $5.
cost = initial fixed fee + cost per mile + toll
46 = 5 + 0.6x + 5
0.6x + 10 = 46
0.6x = 36
x = 36/0.6
x = 60
You can travel 60 miles.
