A number multiplied by a power of 10 makes the decimal point move to the right as many as there is zeroes in the power of 10: for example, 1*10=10, 5.5*100 = 550.
In your case:
a) 4301 = 430.1 * 10 = 43.01 * 100 = 4.301 * 1000... more the decimal point goes backward, the more zeroes you add to the power of 10.
b) 687 = 68.7 * 10 = 0.687 * 1000 = 0.0687 * 10 000, if the decimal point goes beyond the last number, you add zeroes to the left before the decimal point.
c) Same thing here! 56 = 5.6 * 10 = 0.56 * 100, etc..
Hope this helps! ;)
We must first solve the number of fiction and nonfiction books
if x is the number of fiction books and
y is the number of nonfinction books
Then,
x + y = 400
x = y + 40
Solving the system of equations:
x = 220
y = 180
Therefore, the probability that Audrey and Ryan will get both nonfiction books is
P = 180/400 + 179/399
P = 0.8986
Answer:
1464 inch²
Step-by-step explanation:
given first prism sides: length - 10 width - 10 height - 10
given second prism sides: length - 12 width - 12 height - 12
using the formula below:
for the first prism:
2(10*10+10*10+10*10)
600 inch²
for the second prism:
2(12*12+12*12+12*12)
864 inch²
So total surface area is (864 inch² + 600 inch²) =1464 inch²