When an exponent is a fraction, the denominator is written as a root, while the numerator is the power:
Since a is to the power of 5/7, the 7 becomes the 7th root, and the 5 becomes a^5. This is:
7th root of (a^5), or(B).
The total number of marbles in the bag is 7, since 3+4=7. There are 3:4 black marbles, so 3/7 of the bag is black marbles, which can be written as 3:7.
4/7 of the bag is red marbles, which can be written as 4:7
<span> By definition, the perimeter of a semicircle is given by:
</span>
<span> Where,
d: diameter of the semicircle
r: radius of the semicircle.
The radius of the semicircle is given by:
</span>

<span> Where,
d: diameter of the semicircle
Substituting values:
</span>

<span>
Then, the perimeter is:
</span>

<span>
Answer:
The perimeter of the semicurcle is given by:
P = </span><span>
<span>164.48</span></span>
m
Answer:
OR 
Step-by-step explanation:
Simply put, the total amount of fruits in the basket is 20. Since there are only 5 apples, this makes you only have a 5/20 chance of picking an apple. If you simplify that ratio, you get 1/4.
Good Luck!!!!
Answer:
Binomial probability distribution.
0.1171
Step-by-step explanation:
p = 40% = 0.4 ; q = 1-p = 1 - 0.4 = 0.6
n = 20 ; x = 10
P(x = x) = nCr * p^x * q^(n-r)
P(x = 10) = 20C10 * 0.4^10 * 0.6^10
P(x = 10) = 184756 * 0.0001048576 * 0.0060466176
P(x = 10) = 0.11714155
P(x = 10) = 0.1171