Answer:
12
Step-by-step explanation:
Multiply 80 and 15, then divide by 100 to get 80% of 15 which is 12.
Answer:
C and D
Step-by-step explanation:
<span>How can you use addition and subtract to put together and separate measures of an angle and its parts
Adding and Subtracting angles can be put this way.
Complementary angles can be formed by two angles with total of 90 degrees.
</span><span>Supplementary angles can be formed by two angles with total of 180 degrees.
</span>
X + Y = 90 degrees
Y = 90 - X
X = 90 - Y
X + Y = 180 degrees
Y = 180 - X
<span>X = 180 - Y</span>
Answer:
Step-by-step explanation:
Given that,
The value of 
We need to find an expression for 
. To find it, put the value of n as (n-1). So,
Hence, the value of S(n-1) is equal to 
.
