Answer:
4
Step-by-step explanation:
First n(AUB)=n(E) - n((AUB)')
So n(AUB) = 40 - 6 = 34
Now all u hv to do is use the formulae,
n(AUB) = n(A) + n(B) - n(ANB)
So when u substitute above values,
34=22 + n(B) - 8
So,
n(B) = 4
Answer:
8/9 , 5/7 , 2/3 , 0.62
Step-by-step explanation:
Two ways of solving:
1. Set all to fractions with common denominators
or
2. set all to decimals
The second way is with all honesty easier, so i'll show you that way.
to convert a fraction into a decimal do numerator divided by denominator
so 5/7 = 0.714285714
8/9= 0.888888888...
2/3= 0.6666666 ...
then 0.62
Then simply arrange them in order.
0.888 , 0.7142 , 0.66666 , 0.62
8/9 , 5/7 , 2/3 , 0.62
So 700 is 35%
700/35 is x/100
X= 2000
Plot the intercepts:
y=-1
x=?
to find the x intercept, you dont solve the equation as it is solved in the slope-intercept form. instead, you simply plug in 0 for y:
0=1/4x-4
0=1/4x-4+4
4=1/4x
4/1/4=1/4x
1/4=0.25
x=16
revise:
y=(0, -1)
x=(16,0)
graph the slope for y=-1/2x-1: start from say point (0,-1)
graph the slope for y=1/4x-4: start from say point (16,0) ; you can just ise the intercept (0,-4) since the graph is diluted small...anyways
the points intersect at (4, -3) so thats the solution to the equations
NOTE: when graphing slopes that are negative either the numerator or the denominator can be graphed negative. so I graphed the first equation with the numerator as the positive and the denominator as the negative : rise= 1 ; run: -2. once i got to the end of the provided graph i started from the -1 y-intercept again and graphed the equation using: rise=-1; run=2
*graphing messes me up, too*