The given details are illustrations of addition and subtractions of fractions. The scuba driver is at an elevation of 
ft below the sea level.
Given that:
--- the first dive
---- the additional dive
From the question, we understand that the diver starts at the sea level.
This is represented with 0ft.
So, the diver's elevation (d) is calculated as follows:
--- we use subtraction because the diver is below the sea level
So, we have:
Convert fractions
Take LCM
Reduce fraction
The above value means that the diver's elevation is at ft below the sea level.
Read more about fractions at:
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Answer:
D
Step-by-step explanation:
Answer:
32.9
Step-by-step explanation:
47% of 70 would be answered by doing the following
0.47 x 70 = 32.9
To convert from a percent into a decimal, divide the percent by a hundred and you will have your decimal.
By comparing the perimeters, we can deduce the scaling factor:
The areas scale with the square of the scaling factor, so the new area is
Answer:
B.) 1 / r⁴²
Step-by-step explanation:
In this case, you can multiply the exponents together. When you have a negative exponent, it can be moved to the bottom to remove the negative sign.
(r⁻⁷)⁶
r⁻⁴²
1 / r⁴²
