Answer:

Step-by-step explanation:
You use the Pythagorean theorem since a triangle is formed.


36-4 =
x= 
Answer:
Its B
Step-by-step explanation:
Answer:
Correct.
Step-by-step explanation:
This is the perimeter formula for a rectangle.
Perimeter is l + l + w + 2
p = 2l + 2w
Answer:
Option B is correct
For , the function for the given sequence is defined as;
Step-by-step explanation:
An arithmetic sequence is a sequence in which the difference between each consecutive term is constant.
An explicit formula for this arithmetic sequence given by;
where a represents first term
Since, the given sequences; 7 , 10 , 13 , 16 and 19
⇒ common difference(d) = 3 and a = 7
Since.
10 -7 = 3
13- 10 = 3 ....
The function which defined this sequence is;
using distributive property:
therefore, the function for the given sequence for all integers is;
Answer: 
f(3)
Put the value of x = 3 to the equation of the function
