Answer:
the probability that exactly one of their four children will have that trait is 0.287%
Step-by-step explanation:
Given;
The probability that a child born to them have a particular trait is
P = 85% = 0.85
The probability that a child born to them will not have a particular trait is
P' = 1 - P = 1-0.85 = 0.15
The probability that exactly one of four children have the trait is:
P(1) = P × P' × P' × P'
P(1) = 0.85 × 0.15 × 0.15 × 0.15
P(1) = 0.00286875
P(1) = 0.287 %
the probability that exactly one of their four children will have that trait is 0.287%
Answer:
The inverse is -1/7(x+4)
Step-by-step explanation:
We have the function
y = -7x-4
To find the inverse, exchange x and y
x = -7y -4
Solve for y
Add 4 to each side
x+4 = -7y -4+4
x+4 = -7y
Divide each side by -7
-1/7(x+4) = -7y/-7
-1/7(x+4) = y
The inverse is -1/7(x+4)
Answer:
The last one.
Step-by-step explanation:
By V i think you mean square root.
To start, determine the amount of time needed to finish the book. Do this by multiplying the amount read at 45 minutes by the total time to read the book (x) and setting it equal to the time read, 45 minutes. This gives you (2/5)x=45. Next, solve for x. (2/5)x=45, multiply both sides by 5, 2x=225, divide both sides by 2, x=225/2 minutes to read the whole book. Now, divide your new time, 70 minutes, by the total time to read a whole book. This gives you 70/(225/2), which you would multiply the top by the reciprocal of the bottom, giving you 70*(2/225), now, you multiply the numerators by each other and the denominators by eath other, getting (70*2)/(1*225)=140/225. Now, you simplify, first by dividing each by 5, 28/45, which is the most simplified it could be. This makes your answer 28/45 of the book read in 70 minutes.