Soo what do you need help with? It seems pretty easy. I can help you if you want.
Answer:
5
Step-by-step explanation:
The triangle is an isosceles triangle meaning it has two equal sides and two equal base angles. 52 and y are the base angles. This means y=52.
To find x, use that the sum of all the angles of a triangle is equal to 180 by adding the angles together.
52+52+14x+6=180
110+14x=180
14x=70
x=5
Finding the mean is you have to add it all up:
49+55+52+46+47+42+38= 328
The divide it by the amount of numbers so, 329/7= 47.
Subtract 47 from every number then, but even if you get a negative number you gotta keep it a positive so just ignore it if you get a negative answer when subtracting, once you do that you would add up those answers you got so;
2+8+5+1+0+5+9= 30
Then divide it again, 30/7
Which then you get the M.A.D which is 4.3, rounded to the nearest ten.
Answer:
C
Step-by-step explanation:
Note that (f + g)(x) = f(x) + g(x)
f(x) + g(x)
= 4x + 1 + x² - 5 ← collect like terms
= x² + 4x - 4 → C
