A solid lies between planes perpendicular to the x-axis at x=0 and x=19. The cross sections perpendicular to the x-axis on the i
nterval 0(less that or equal to)x(less than or equal to)15 are squares with diagonals that run from the parabola y=-2sqrt(x) to the parabola y=-2√x to the parabola y=2√x. Find the volume of the solid.
1 answer:
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Answer:
≈23.6 kg left.
Step-by-step explanation:
For determining this, we can simply use an exponential decay equation representing this scenario:
a: the initial amount
t: the amount of time
h: the half life
Now, substitute the numbers into the equation:
Now, solve this equation:
Use a calculator to solve for y:
y= 200(0.118)
y≈23.6 kg left.
BEST estimate of this amount is . Correct option A. 2 x 10^7 .
<u>Step-by-step explanation:</u>
Here we have , Hoover Dam spans the Colorado River on the Nevada-Arizona state line. For its construction, the federal government purchased 21,670,000 pounds of gates and valves. We need to find BEST estimate of this amount . Let's find out:
21,670,000 pounds
⇒ 21,670,000 pounds
⇒
⇒
⇒
⇒
⇒
Now, Rounding of 2.167 we get 2 ,So
⇒
Hence , BEST estimate of this amount is . Correct option A. 2 x 10^7 .