Mass of water in the lake is 1.3309 × 10¹³ tons.
Step-by-step explanation:
Density is defined as mass divided by volume.
Given:
Density of water, d = 3.12 × 10⁻² tons / cubic foot
Volume of the lake, v = 4.266 × 10¹⁴ cubic feet
Mass of the water in tons, m = ?
Formula to be used:
Mass = Density × Volume
=3.12 × 10⁻² tons / cubic foot × 4.266 × 10¹⁴ cubic feet
= 1.3309 × 10¹³ tons of water
The expression for the total cost of hiring a plumber will be equal to $50 + $40(h).
Mathematical actions are called expressions if they have at least two terms that are related by an operator and include either numbers, variables, or both. Adding, subtraction, multiplying, and division are all reflection coefficient operations. A mathematical operation such as reduction, addition, multiplication, or division is used to integrate terms into an expression.
As per the given statement in the question,
The charge for a plumber to visit the house = $50
The additional charge per hour = $40
The expression for t hours will be,
A = $50 + $40(h),
Here, A is the total amount and h is the number of hours the plumber is working.
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