Answer:

Step-by-step explanation:
Given:

Solution:
Applying Distributive property,we obtain
Simplifying using PEMDAS:
Done!
Answer:
Right Triangle
Step-by-step explanation:
Let's find the missing angle:
180 - (40 + 50)
180 - 90 = 90°
So we have a right triangle!
Answer:
Step-by-step explanation:
The axis of symmetry lies exactly halfway between the given x = 1 and x = -5.
The axis of symmetry is x = -2.
The 'halfway' value is also the 'average' of 1 and -5: -4/2, or -2.
The axis of symmetry is x = -2.
There is 15 bars in each case.
Subtract 8 from 143 and you get 135.
Divide 135 by 9 and you get 15 :)