The leading coefficient is a negative value (-3) so the graph goes down on the right side.
This makes either Graph B or C correct.
Now because the degree ( exponent ) (the ^4) is even both ends of the graph go in the same direction.
This makes Graph B the correct answer.
A) The larger and small triangles are similar, so
8/10 = x/15
x = (8*15)/10 = 12
b)find the altitude x
tan 40 = x / 5
x = 5 tan 40 = 4.195
By Pythagoras theorem:-
y = sqrt ( 4.195^2 + 11^2)
y = 11.8 to 3 significant figures
Step-by-step explanation:
8 + 12
20
4 - 6 × 2 + 5
use pemdas
4 - 12 + 5
-8 + 5
-3
20:-3
focus on one side at a time
7+x
expressions are things without equal signs.