Times both sides by -1
-8x=x²-20
add 8x both sides
0=x²+8x-20
factor
what 2 numbers multiply to get -20 and add to get 8
-2 and 10
0=(x-2)(x+10)
set to zero
x-2=0
x=2
x+10=0
x=-10
x intercepts at x=-10 and 2 or at the points
(-10,0) and (2,0)
For a two-digit number to be palindromic, the two digits must be the same.
Number of two-digit numbers with the two digits equal is 9. (i.e. 11, 22, 33, . . . )
Total number of two-digit numbers is 90.
Therefore, the <span>probability that a randomly chosen two-digit number is palindromic is 1 / 10 or 0.1.</span>
Answer:
(x-7)(x+7)
Step-by-step explanation:
x^2 -49
This is the difference of squares
x^2 -7^2
We know that a^2 -b^2 = (a-b)(a+b)
(x-7)(x+7)
Are 2,3,4,5,6,7,8,9 your welcome
Answer: √
145 or 12.04159457 for the decimal ways try 12
Step-by-step explanation: 12.0415945787923
Midpoint (−2,−9.5)
Slope −0.0833333333333333
x intercept −116.00
y intercept −9.67