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bearhunter [10]
2 years ago
13

 A submarine is at an elevation -100 feet( 100 feet below sea level) let’s compare the elevation of these for people to that of

the submarine .
Mathematics
1 answer:
Svetradugi [14.3K]2 years ago
8 0
<h3>A submarine is at an elevation of -100 feet (100 feet below sea level). Let’s compare the elevations of these four people to that of the submarine:</h3>
  • Clare’s elevation is greater than the elevation of the submarine. Clare is farther from sea level than the submarine.
  • Andre’s elevation is less than the elevation of the submarine. Andre is farther away from sea level than the submarine.
  • Han’s elevation is greater than the elevation of the submarine. Han is closer to sea level than is the submarine.
  • Lin’s elevation is the same distance away from sea level as the submarine’s.
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Answers:

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Those are the costs for a whole small pizza.

==========================================================

Explanation:

Let

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  • y = cost of whole small pizza from Pizza Duo

x and y are some dollar amount, so they cannot be negative numbers. It also doesn't make sense to have them be 0 either. So we'll make them positive.

2/3 of x is equal to 3.50 as the first sentence mentions. This forms the equation (2/3)*x = 3.50

Multiply both sides by the reciprocal of 2/3 to isolate x

(2/3)*x = 3.50

(3/2)*(2/3)*x = (3/2)*3.50

x = 5.25

Pizza Uno charges $5.25 for a whole small pizza.

----------------------------

Pizza Duo charges $4.20 for 3/4 of a small pizza, meaning the equation we need to solve is

(3/4)y = 4.20

We'll use the same idea as the last equation to get...

(3/4)y = 4.20

(4/3)*(3/4)y = (4/3)*4.20

y = 5.60

Pizza Duo charges $5.60 for a whole small pizza.

Pizza Uno is the better deal (assuming both pizzas taste the same or you don't have a preference for either). You would save $5.60 - $5.25 = $0.35 = 35 cents.

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