Answer:
42
Step-by-step explanation:
Hey There!
Angle 3 and Angle 4 are a pair of supplementary angles meaning that added together they will equal 180
So if angle 4 is given to find angle 3 all we have to do is subtract the angle that is given from 180
180-138=42
Therefore angle 3 = 42
Answer:
68°
Step-by-step explanation:
sum of interior angles in a parallelogram is 360. two side must form 180 degrees and the opposite side are equal
The first thing we must do in this case is to define the variables.
We have then:
v: the value of the bicycle
t: years
The standard equation of the line is:
v-vo = m (t-to)
The slope is:
m = (v2-v1) / (t2-t1)
Substituting values:
m = (640-850) / (3-0)
m = -70
We choose an ordered pair:
(to, vo) = (0, 850)
Substituting values:
v-850 = -70 (t-0)
Rewriting:
v = -70t + 850
Answer:
assuming it decreases in value by the same amount each year, a linear equation for the value of the bicycle, v, when it is t years old is:
v = -70t + 850
Without knowing anything about the sequence, this is impossible to answer. But suppose the sequence is arithmetic, in which case each term differs by some constant 
:
Then we can write
and from the formula above, we see this means the 10th term in the sequence is 
. But that's all the specific info we can gather about such an arithmetic sequence. If we set the first term to be some unknown 
, then the sum of the first 19 terms in the sequence would be
If we knew one more term in the sequence, we could determine the value of and derive the value of 
(if the first term 
is not immediately given), and then go on to find an exact numeric value for the sum.
