Watch carefully:
A 'zero' of the function is a value of 'x' that makes the function zero.
2x - 10 = 0
Add 10 to each side:
2x = 10
Divide each side by 2 :
x = 5
f(5) = 0
Answer:
x=9.25
Step-by-step explanation:
ABD + CBD + ABC + 180
70 + 5x + 13 + 3x + 33 =180
116 + 8x = 180
8x = 74
x = 9.25
Answer:
No restriction
Domain:
Step-by-step explanation:
We are given function as
we know that this is exponential function
and x+4 as an exponent over e
so, we can select any real values of x as an exponent
and this function will be defined for all values of x
so, there won't be any value of x where f(x) is undefined
So, domain would be
Answer:
C. a = 6 , b = 2√10
Step-by-step explanation:
Similarity triangles so
a/2 = 18/a
a^2 = 36
a = 6
b^2 = 2^2 + 6^2
b^2 = 4 + 36
b^2 = 40
b = 2√10
Answer
a = 6 , b = 2√10
The most biased results would probably come from answer A.