Step-by-step explanation:
uuuuuuyyuuuuuuuuuuuuuyuuyyuuuuuuuuu
This is an arithmetic sequence because each term is 7 greater than the previous term, so 7 is what is called the common difference...
Any arithmetic sequence can be expressed as:
a(n)=a+d(n-1), a=first term, d=common difference, n=term number.
We know a=1 and d=7 so:
a(n)=1+7(n-1)
a(n)=1+7n-7
a(n)=7n-6
The above is the "rule" for the nth term.
Answer:
160 hours
Step-by-step explanation:
y=3+.18(hours)
31.80=3+.18(hours)
28.8=.18(hours)
160=hours
Answer:
I got - 5 as an answer.
I don't think I made a mistake.
Please if you find any error, contact me in the comment section.
Step-by-step explanation:
![a = -3 , b= 4 ,c= - 5\\(a+b)c\\(-3+4)-5\\(1)*(-5)\\Answer = -5](https://tex.z-dn.net/?f=a%20%3D%20-3%20%2C%20b%3D%204%20%2Cc%3D%20-%205%5C%5C%28a%2Bb%29c%5C%5C%28-3%2B4%29-5%5C%5C%281%29%2A%28-5%29%5C%5CAnswer%20%3D%20%20-5)
Answer:
Step-by-step explanation:
3n+15=75
three times a number is 3n. +15 is 15 more.
3n+15=75 subtract 15 from both sides to get the 3n alone
3n=60 divide by 3 to get the n by itself
n=20