Step-by-step explanation:
Angle A = 4x + 12 = 4(15) + 12 = 72°.
Acute is for angles that are less than 90°.
Obtuse is for angles that are between 90° and 180°, not inclusive.
Right is for angles that are 90°
Hence the answer is acute.
Answer:
580 cm^2
Step-by-step explanation:
First, find the area of the front and back. 20*10=200
There are 2 sides with 20*10 ( front and back) so we can multiply by 2. 200*2=400
Then, the sides. 3*20=60*2=120
Then, the top and bottom 10*3=30*2=60
400+120+60=580
Answer:

Step-by-step explanation:
Given expression : 
Solving further :


So, 
So, The given expression is equivalent to Option A
So, Option A is the answer
Hope this helps! f-1(x)=x/2-1/2
Step-by-step explanation:
Uhm, try multiplying the destinations of chuck a B and see what they both start a diet and then where they ended at the end if that makes sense