the formula is a_{1}+(n-1) d
so a_{1} would be the first number in the sequence, which would be 13 in problem 9.
13+(n-1)d
then you put in n, which is 10 (it represents which number in the sequence you're looking for, for example 16 is the second number in the sequence)
13+(10-1)d
then you find the difference between each number, represented by d which in this case is 3
13+(10-1)3
13+(9)3
13+27=
40
0.49 or .49 because 9.80 / 20 = .49 and .49 * 20 = 9.80
Hope this helped! Lemme know if this is correct, I'm 99.9999999% sure it is XD but if not my apologizes. :)
Answer:
C. 150
Step-by-step explanation:
The given angle and angle x are supplementary. This means that when added together they add to 180. So, to solve you can set up an algebraic equation like 180=x+30. Then, subtract 30 from both sides to get 150=x.
The answer is 32.
L x W x H
4 x 2 x 4
8 x 4
32
Hope this helps!