Answer:1 four
Step-by-step explanation:
this is a triangular pyramid which means it hasa triangle shape base which counts as one and it has one face on each side of the triangular base which is three more so if you addthe one face which is the base and the three sides it gives you four faces
B. Acute and isosceles
Since the angle is less than 90 degrees and it has two equal sides
Prime factorization. Its only factors are 1 and 71.
Associative
Any time the numbers or variables in the parenthesis change, it is associative
Answer:
The indifference point is 100 minutes.
Step-by-step explanation:
Giving the following information:
Plan a cost $23 plus an additional $.08 for each minute of calls.
Plan B cost $19 an additional $.12 for each minute of calls.
<u>First, we need to establish the total cost formula for each plan:</u>
Plan A= 23 + 0.08*x
Plan B= 19 + 0.12*x
x= number of minutes
<u>Now, to calculate the indifference point, we equal both formulas and isolate x:</u>
23 + 0.08x = 19 + 0.12x
4 = 0.04x
100= x
The indifference point is 100 minutes.
<u>Prove:</u>
Plan A= 23 + 0.08*100= $31
Plan B= 19 + 0.12*100= $31