Answer:
8.38
Step-by-step explanation:
The underlined number is in the hundredths place, so that means that we're going to round there. That means that you look at the number to its right and if it's lower than 5, it stays the same. However, if it's 5 or higher, you round it up. For example, if the number was 8.386, we would round it to 8.39.
Answer:
D. 
Step-by-step explanation:
Let be
. To find the equivalent expression we must use the following property:
(1)
Based on this fact, we find the following equivalence:

Hence, the correct answer is D.
X is a unknown
Number you need to find what the total of all the angles will be and the solve for x
30 since that’s the lowest number both 3 and 10 can fit in