Answer:
82
Explanation:
78 respondents aged 18 to 22 use face book and 4 respondents aged 18 to 22 do not use face book. since there are no other options for the survey, the total number of students who were surveyed that are aged 18 to 22 would be 78 + 4 = 82.
i hope this helps! :D
Answer:
the third one
Step-by-step explanation:
We can break it up into
. This means that it is
, or 
Answer:
C
Step-by-step explanation:
you can make a right triangle from the center of one base to the edge of that circle, and then up to a point on the circumference of the other base
the bases of the triangle would be 2 and 5
so that gives sqrrt 29
Answer:
B
Step-by-step explanation:
Answer:
The solution would be (-19, 40)
Step-by-step explanation:
In order to solve this system by substitution, simply take the value of y in the first equation and use it in place of y in the second. This will allow you to solve for x.
5x + 2y = 15
5x + 2(-3x - 2) = 15
5x - 6x - 4 = 15
-x - 4 = 15
-x = 19
x = -19
Now that we have the value of x, we can find the value of y.
y = -3x - 3
y = -3(-19) - 3
y = 43 - 3
y = 40