Answer:
C
Step-by-step explanation:
the equation of relationship between x and y in item ll is: y = -x -3
the rate of change of it is -1 that is equal to the rate of change of items l.
Answer:
The answer is
<h2>2( x + 3)(x - 5)</h2>
Step-by-step explanation:
To factor the expression
2x² - 4x - 30
<u>First factor 2 out of the expression</u>
That's
2( x² - 2x - 15)
<u>Next write - 2x as a difference</u>
2( x² + 3x - 5x - 15)
<u>Factor out x from the expression</u>
That's
2 [ x( x + 3) - 5x - 15 ]
<u>Factor out </u><u>-</u><u>5 from the expression</u>
2 [ x ( x + 3) - 5( x + 3) ]
<u>Factor out x+3 from the expression</u>
We have the final answer as
<h3>2( x + 3)(x - 5)</h3>
Hope this helps you
Answer: D). This was a cross-sectional cohort study
Step-by-step explanation:
The given situation is an example of cross sectional cohort study because the investigator choose the samples from the population using cross sectional method and use the same sample source for analyzing the independent variables for specific period of time or intervals of time to assess the history of exposures and outcomes.
Here, the lung function is tested at an interval of 7 years compared with the levels of exposure to the coal ash so it is the example of cross sectional cohort study.
Answer:
<u>y = 3/2x + 6</u>
Step-by-step explanation:
<u>Equation of the given line</u>
- slope = rise/run = -2/3
- y-intercept = (0, -2)
- Equation is y = -2/3x - 2
<u>Perpendicular</u>
- Slope is the negative reciprocal
- m ⇒ -(1/[-2/3]) = 3/2
- Intersection point is (-2, 3)
<u>Using Point-slope equation</u>
- y - 3 = 3/2 (x + 2)
- y - 3 = 3/2x + 3
- <u>y = 3/2x + 6</u>
