Is 500 a good estimate for the sum of 362 and 211? If it is, explain why it is a good estimate. If it is not, explain why it is
2 answers:
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Answer:
Step-by-step explanation:
Given the following quadratic equation:
The steps to solve it are:
1. Move the terms to one side of the equation:
2. Apply the Quadratic formula .
In this case we can identify that:
Then, substituting these values into the Quadratic formula we get the following solutions:
The pool's dimension are l = 2.7 m and w = 1.2 m
Step-by-step explanation:
Step 1 :
Given
The pool's perimeter = 7.8 m
Four times the pool's length = nine times the pool's width.
=> 4l = 9w => l = () w
Where l is the pool's length and w is the pool's width
Step 2:
The rectangle's formula for perimeter is 2 (l+w)
Substituting l = () w ,
2[ () w + w] = 7.8 (given)
() w = 7.8 = > w = 1.2 m
Step 3 :
l = () w = (
) 1.2 = 2.7
l = 2.7 m
Step 4 :
Answer :
The pool's dimension are l = 2.7 m and w = 1.2 m