Ok so umm you need to do 5x4= 20 and divide 20 and 4 you get 5 and multiply 5x4 you get 20 and the answer is 20
Answer:
![P(B) = \frac{7}{8}](https://tex.z-dn.net/?f=P%28B%29%20%3D%20%5Cfrac%7B7%7D%7B8%7D)
Step-by-step explanation:
Given
P(A or B)= P(B)-P(A and B)
P(A)=1/3
P(A and B)=1/8
P(A or B)= 3/4
Required
Find P(B)
To find P(B), all we need to do is to substitute values of P(A or B) and P(A and B) in the given equation.
This goes thus;
P(A or B) = P(B) - P(A and B) becomes
![\frac{3}{4} = P(B) - \frac{1}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D%20%3D%20P%28B%29%20-%20%5Cfrac%7B1%7D%7B8%7D)
Make P(B) the subject of formula
![P(B) = \frac{3}{4} + \frac{1}{8}](https://tex.z-dn.net/?f=P%28B%29%20%3D%20%5Cfrac%7B3%7D%7B4%7D%20%2B%20%5Cfrac%7B1%7D%7B8%7D)
Take L.C.M
![P(B) = \frac{6 + 1}{8}](https://tex.z-dn.net/?f=P%28B%29%20%3D%20%5Cfrac%7B6%20%2B%201%7D%7B8%7D)
Add fractions
![P(B) = \frac{7}{8}](https://tex.z-dn.net/?f=P%28B%29%20%3D%20%5Cfrac%7B7%7D%7B8%7D)
From the workings above, the value of P(B) using the given equation is ![\frac{7}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B8%7D)
ummm -4.5 since you just observe this is negative
Answer:
a=6
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse
a^2 + 8^2 = 10^2
a^2 + 64= 100
a^2 +64-64 = 100-64
a^2 = 36
Take the square root of each side
sqrt(a^2) = sqrt(36)
a = 6
It is a straight line of symmetry because if you have a paper A and you fold it, it will form a straight line, and that is also meaning a straight line of symmetry. If you fold it any other way, it will not be a line of symmetry.
Hope this helps you ;)