Answer:
3400
Step-by-step explanation:
60 * 70 = 4200
70 - 10 - 20 = 40
20 * 40 = 800
4200 - 800 = 3400
Answer:
Sorry
Step-by-step explanation:
Answer:
arithmetic series
Step-by-step explanation:
We are adding 1 each time , so this is an arithmetic sequence
a1 =5
The common difference is 1 so d=1
an = a1+d(n-1)
an = 5 + 1(n-1)
an = 5+n-1
an = n+4
If we have an arithmetic sequence, we have an arithmetic series when we add the arithmetic sequence
Answer:
C. 144 square feet
Step-by-step explanation:
step 1
we know that
The perimeter of a square is given by the formula

where
P is the perimeter
a is the length side of the square
we have

substitute in the formula

solve for a
divide both sides by 4

step 2
Find the area
The area of a square is given by the formula

we have

substitute

Answer:
b = 2A/h - a . (option a)
Step-by-step explanation:
Check attachment