Answer:
AB = 11
Step-by-step explanation:
Using the external secant property,
CB*CA = CD*CL (=CT^2 if T is tangent throught C)
substitute values,
7*(7+2x+3) = 9*(9+x+1)
Expand and simplify
70+14x = 90 + 9x
5x = 20
x = 4
=>
AB = 2x+3 = 2(4)+3 = 8+2 = 11
8 - 2 = 6
So 10 - ? = 6
10 - 4 = 6
The missing number is 4.
Answer:
(or 6)
Step-by-step explanation:
<u>Set f(x)=0:</u>
or
<u>Now check both solutions:</u>
Therefore, because there is a hole at . The denominator, in addition, can never be 0, so the function is undefined for .
Since , then is the only zero of the function.
You got the diagram correct, but remember that in order for it to be a function all the x's (left) have to have a different y (right)
Hope this helped! Let me know if I need to clarify anything or explain more in depth!
Well she made the mistake of dividing the coefficient and the variable with the exponent wrong. we can look at this like
(10 * x^-5) / (-5 * x^10)
we can actually factor out the 10 and the 1/-5 ans get 2 fractions to see this clearer.
(10 / -5) * (x^-5 / x^10)
we can clearly say
10/-5 = -2
now the other one. when stuff that has exponents, as long as they have the same base we just subtract the exponents. so:
(x^-5 / x^10) =
x^(-5 - 10) =
x^-15
put those 2 together
(-2) * (x^-15)
-2x^-15