Answer:
2.5
Step-by-step explanation:
A²+b²=c²
39²+b²=89²
1521+b²=7921
subtract 1521 from both sides
b²=6400
so then you square both sides
√6400
80
Answer:
5 hours
Step-by-step explanation:
You just multiply until you get to 125 and since he is earning 25 an hour multiply 5*25 or 25*5 so he will be having to work 5 hours to be able to pay materials
Answer:
a). 448 feet in inches=8.96 inches
b). 706 feet in inches=14.12 inches
Step-by-step explanation:
a).
Step 1
Determine the conversion factor as follows;
1 inch=50 feet
To convert a value that's initially in feet to inches we multiply the value by the conversion factor;
(1/50)=0.02
To convert a value that's initially in inches to feet we multiply the value by the conversion factor;
50
Step 2
Convert 448 feet in inches
Value in inches=value in feet×conversion factor
where;
value in feet=448 feet
conversion factor=0.02
replacing;
value in inches=(448×0.02)=8.96 inches
b).
Convert 706 feet in inches
Value in inches=value in feet×conversion factor
where;
value in feet=706 feet
conversion factor=0.02
replacing;
value in inches=(706×0.02)=14.12 inches
A₁ = 9
a₂ = 9+2 → a₂ = a₁ + 2. Since it's an AP, d, the common difference is 2
1) Then the recursive formula is :
a(n) = a(n-1) + 2
2) Explicit formula:
It's an AP, with first term a₁, d= common difference and n = number of term, which is the number of rows in this problem.
the value of the nth term is given by the formula is:
value of nth term = a₁ + (n-1).d
3) Number of seats in the 12th row:
9 + (12-1).2 = 31 seats
