Regions numbered 1 thru 9
P(1st number is a 3) = 1/9
P(2nd number is a 7) = 1/9
P(both) = 1/9 * 1/9 = 1/81 <=
Answer:
c=16
Step-by-step explanation:
hello :
x2+8x+c is the perfect square means : x²+8x+c= (x+a)²
x²+8x+c = x²+2ax+a²
so : 2a=8
c=a²
a=8/2 = 4 but : c = a²
conclusion : c=16
Finding y intercept and x intercept is easy:
X intercept will be of the form (x,0) and y intercept will be of the form (0,y)
● If you put x=0 in the equation, you will get y-intercept.
● If you put y=0 in the equation, you will get x-intercept.
______________________________
Given equation: 2x - 4y = 10
◆ Put x = 0
2×0 - 4y = 10
=> -4y = 10
=> y = 10/(-4)
=> y = -5/2
Thus y intercept is (0, -5/2)
◆Put y = 0
2x - 4×0 = 10
=> 2x = 10
=> x = 10/2
=> x = 5
Thus the x intercept is (5,0)
1)combine like terms
2) move 9 to the other side by subtracting 9
3) divide by the # that is in front of y - to both sides
answer you should get: -11/2