Answer: If four numbers are proportional, a : b = c : d, then the product of the extremes is equal to the product of the means. ad = bc
Answer:
A) The indicated values of F(x) for x=-3 and x=5 are
and
B) The domain of f is the set of all real numbers
Step-by-step explanation:
Given that the function F is defined by
for x=-3,5
A) To find F(x) for the indicated values of x :
Given
for x=-3,5
- Put x=-3 in the given function


Therefore
- Put x=5 in the given function


Therefore
The indicated values of F(x) for x=-3 and x=5 are
and
B) To find the domain of f :
The domain of the f in the given expression is the set of all real numbers except where the expression
is undefined. In this case, there is no real number that makes the expression undefined.
The domain of f is the set of all real numbers
The firs one and I’m sure
The situation is represented by a right triangle with 2.1km as the hypotenuse. The distance x from the center to the landing point divided by 2.1 is the cosine of 37 degrees. So x/2.1=cos37=0.7986 approx, x=2.1×0.7986=1.68 km.