The first one is D) 6
then the second is C).
Answer: 18.75
Step-by-step explanation: 31.25 divided by 5 = 6.25 so 6.25 x 3 = 18.75
The height (h) of the water in cm for d days is given by the equation h(d) = -0.9d + 1200
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Let h represent the height of the swimming pool after d days, the water evaporates 0.9 cm in height each day. If the pool water starts at 1200 cm hence:
h(d) = -0.9d + 1200
The height (h) of the water in cm for d days is given by the equation h(d) = -0.9d + 1200
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The area of the rectangle is the product of its base and height
The height of the rectangle is 4x - 2 units
<h3>How to determine the height?</h3>
The given parameters are:
Area = 4x^2 - 2x
Base = x
The area of the rectangle is:
Area = Base * Height
This gives
4x^2 - 2x = x * Height
Divide through by x
4x - 2 = Height
Rewrite as:
Height = 4x - 2
Hence, the height of the rectangle is 4x - 2 units
Read more about areas at:
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