Please slove step by step for both

Mathematics

2 answers:

CaHeK987 [17]3 years ago

6 0

Answer:

<h2>First Question:</h2><h3>BD = 28</h3><h2>Second Question:</h2><h3>BD = 56</h3>

Step-by-step explanation:

<h2>First Question:</h2>

BD = BC + CD

21 + 7 = 28

BD = 28

<h2>Second Question:</h2>

BD = CD - CB

73 - 17 = 56

BD = 56

Serggg [28]3 years ago

3 0

Answer:

Step-by-step explanation:

8. 21+7 = 28

9. 73-17 =56

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The pollutant PCB (polychlorinated biphenyl) can affect the thickness of pelican eggshells. Thinking of the thickness, T, of the

gayaneshka [121]

Answer:

The expression f(200) depicts the value of the concentration of the pollutant, which when substituted in the expression T = f(P) will give the value of the thickness of the pelican eggs.

Step-by-step explanation:

Since we are given that T = f(P)

Where T = thickness of the eggs

P = concentration in ppm ((parts per million))

Considering f(200) comparing to f(P)

The expression f(200) depicts the value of the concentration of the pollutant, which when substiuted in the expression T = f(P) will give the value of the thickness of the pelican eggs.

i.e substituted the value of the concentration in ppm to get the thickness of the pelican eggs in mm. since the expression shows thickness of pelican eggs as a function of the concentration. for every 200ppm of concentration, the numerical value of the thickness of pelican eggs can be gotten.

6 0

3 years ago

What’s the mean of the numbers 63,73,92,63,93

Igoryamba

Answer:

76.8

Step-by-step explanation:

The mean is the sum of the values divided by the total number of values.

63+73+92+63+93 / 5 =

384 / 5 = 76.8

7 0

3 years ago