Answer: A. The value of his investment decreased by 16% during this time period.
Step-by-step explanation:
Here the initial amount = n
Final amount after 1 years = 0.84n
The total change in the initial amount = n - 0.84n = 0.16 n
= 
Thus, the amount is decreases by 16% in one year,
⇒ Option A is correct.
If 20% was taken off, that means that 35.96 is 80% of the original price.
35.96 =
Now, we just need to put it into fractions, cross multiply, and divide to find the original price.
35.96×100 = 3596
1×80 = 80
3596÷80 = 44.95
Now, to make sure, we multiply 44.95 by 20%,
44.95×0.20 = 8.99
Subtract that from 44.95
44.95-8.99 = 35.96
That is the sale price of the alarm clock.
This means that yes, the regular price of the mp3 alarm clock was
$44.95
Answer: <em>1.1 × 10⁸ cm³</em>
Explanation:
1) Since the ball is spherical, you use the volume formula for a sphere, which is:
Volume = [4/3] π r³
2) r is the radius, which is given and is equal to 3×100cm = 300cm
3) Pluging in the value of r, you get:
Volume = [4/3] π (300 cm)³ = 113,097,335.53 cm³
4) Since, r = 3×100 cm has two significant figures, the result must show only two significant figures.
So, using scientific notation, the right answer must be reported as:<em> 1.1 × 10⁸ cm³</em>
Since the square root of 64 is 8, 8 has an absolute value, so it can be opposites as it, eg. 8 = -8.
Vertex is highest point
ok so the t value of the vertex of a function in the form
f(x)=at^2+bt+c is
-b/2a
find t value
h(x)=-16t^2+50t+6
a=-16
b=50
-50/(2*-16)=1.5625
round
1.6 seconds
max height
input 1.6 for t and evaluate (for more precice, input 1.5625 for t)
max height is 45 feet
seems to be
b=initial velocity
c=intial height
a=-16
eqation is
h(t)=-16t^2+70t+5
vertex is -70/(2*-16)=2.1875
input for t to get max height
82 feet
answers are
1.6 seconds
45 feet
82 feet
