Answer:
Step-by-step explanation:
Given
no of houses that can be served by water is directly Proportional to the square of diameter
where k =constant
10 cm diameter can supply 40 houses
-----------1
For d=30 cm Pipe
-------------2
divide 1 & 2
(b)for N=1440 houses
----------------3
Answer:
805.48
Step-by-step explanation:
there are 52.143 weeks in a year, if you divide 42000 by 52.143 then you get 805.477 if you round then you get 805.48
There are two unknowns in this problem. To start, let's assign variables to each of them. Let x be the age of Jacob and y be the age of Isaiah. Then, we formulate equations based on the relationships stated.
x = 7 + y --> eqn 1
x + y = 63 --> eqn 2
Substituting eqn 1 to eqn 2, then solve for x and y:
(7+y)+y = 63
7 + 2y = 63
2y = 63 - 7
2y = 56
y = 56/2
y = 28
x = 28 + 7 = 35
Therefore, Jacob is 35 years old, and Isaiah is 28 years old.
X = -3 (Given)
So, x-2 = (-3) - 2 = -5