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3 years ago

Is this correct? if not, tell me what is the correct answer

Mathematics

1 answer:

Luba_88 [7]3 years ago

4 0

Answer:

I think this is right

Step-by-step explanation:

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Identify the type of observational study (cross-sectional, retrospective, or prospective) described below. A research company us

finlep [7]

Answer:

Step-by-step explanation:

The retrospective or historic cohort story, is a longitudinal cohort story that considers a particular set of individuals that share the same exposure factor to ascertain its influence in the developments of an occurrence, which are compared with the other set or cohort which were not exposed to the same factors.

Retrospective studies have existed about the same time as prospective studies, hence their names.

8 0

4 years ago

Evaluate the expression when m=8 and n=4 9m+n

Savatey [412]

Look at the attached picture

Hope it will help you...

Good luck on your assignment

~pragya

7 0

4 years ago

Read 2 more answers

Convert the given exponential function to the form indicated. Round all coefficients to four significant digits. HINT [See Examp

shtirl [24]

1) Take natural logarithms (Ln) on both sides of the first equation:

f(t) = 18 [0.887]^t => Ln [f(t) ] = Ln (18) + t Ln(0.887)

2) Take natural lograrithms (Ln) on both sides of the second equation:

f(t) = Qo [e] ^ (-kt) => Ln [f(t) ] = Ln(Qo) - kt

3) Make the coefficients equal=>

Ln (Qo) = Ln(18) => Qo = 18

Ln (0.887) = - k => -k = -0.1199

4) Substitute the terms in f(t) = Qo [e]^ (-kt) =>

f(t) = 18 [e]^ ( -0.1199 t)

Answer: 18 [e]^(- 0.1199t)

5 0

4 years ago

−7 + 3(8n − 8) = 8(7 + 3n) please show work

stepladder [879]

Answer:

Step 1: Simplify both sides of the equation.

−7+3(8n−8)=8(7+3n)

−7+(3)(8n)+(3)(−8)=(8)(7)+(8)(3n)(Distribute)

−7+24n+−24=56+24n

(24n)+(−7+−24)=24n+56(Combine Like Terms)

24n+−31=24n+56

24n−31=24n+56

Step 2: Subtract 24n from both sides.

24n−31−24n=24n+56−24n

−31=56

Step 3: Add 31 to both sides.

−31+31=56+31

0=87

Answer:

There are no solutions.

Step-by-step explanation:

3 0

3 years ago

The table shows the ages and heights of students

Marina CMI [18]

Answer:

Correlation coefficient = 0.945 ( approx) and weight of a student increases as the height of the student increases.

Step-by-step equation:

Here, value of x are 58, 59, 60, 62, 63, 64, 66, 68, 70

Value of y are, 122, 128, 126, 133, 145, 136, 144, 150, 151.

∑x = 570, ∑y= 1236, ∑ = 36234, ∑ = 170694

∑xy=78617

Thus the correlation coefficient,

Where n is the number of the term.

here n = 9

thus, correlation coefficient

r = 

Thus, r= 0.94452987512

Which is closed to 0.95 and greater than 1

Therefore, weight of a student increases as the height of the student increases.

3 0

2 years ago