Answer:
a=50 degrees
Step-by-step explanation:
Look at the triangle in the middle. You can find two missing angles to calculate the third one.
50 and 130 are supplementary, so 50 must be the upper right angle. The angle opposite to 80 has to be equal to it, of the upper left angle is 80.
A triangle is 180 degrees total, and 180-(50+80)= 50.
The missing angle for the triangle is 50, and since "a" is opposite to it, the values are equal.
a=50 degrees
Answer:
5 months
Step-by-step explanation:
Let the number of months be "x"
Lets find equation for both Harry's and Fiona's scheme.
<u>Harry:</u>
80 fixed cost
19 per month
So that would be 80 + 19x
<u>Fiona:</u>
no fixed cost, only 35 per month
So that would be 35x
Now we equate both since we want cost to be same and find x, number of months at which this will occurs. Shown below:

Thus, after 5 months, cost will be same.
Answer:
4.5
Step-by-step explanation:
Answer: The answer is B
Step-by-step explanation: