Answer:
1385
Step-by-step explanation:
1) the difference is d=25-8=42-25=17;
the sequence given in the condition is arithmetic one (linear relationship).
2) in order to calculate the value of the 82d term:
a(n)=a(1)+d*(n-1), where n - number of required term (it is 82), then
a(82)=8+17*(82-1)=8+1377=1385.
If the temperature falls from 72°F to 36°F in four minutes, it means it fell 72-36 = 36°F in four minutes.
To find out what's the value of the temperature fall in one minute we just have to divide 36 by 4:
36 / 4 = 9
Answer: The temperature fell 9°F per minute.
Answer: 1.5 hours
Step-by-step explanation:
If Thiago and Brandon move in opposite directions at speeds of 80mph and 70mph then after 1 hour Thiago will have traveled 80 miles and Brandon will have traveled 70 miles.
Since they are in opposite directions then the distance is from
Then we know that after t hours have elapsed they are 225 miles
Then we pose the following equation
Now we solve for t
Answer:
bl
Step-by-step explanation:
Y = 20x
y • x = 180
180/x = y
180/x = 20x
180 = 20x^2
x^2 = 6
x = + or - 3
Therefore y must equal + or - 60.