Answer: 2.308 .
Step-by-step explanation:
Let X denotes the number of earthquakes in SanFernando valley region of Los Angeles in 1994.
Given:
Probability is 0.87 that there will be at least 15 earthquakes .
i.e.
Z-value corresponding to p-value 0.87 is -1.1263 .
So,
Hence, the required standard deviation = 2.308 .
The general form of a linear equation is
y = mx + b
where m = slope and b = y-intercept
Here m = 2/7
To get to its perpendicular equation, first the slope should be negative reciprocal. So the perpendicular slope is m = -7/2
Given the point (-2,3), use the point-slope form equation, that is
y - y1 = m(x - x1)
Plug in
y - 3 = (-7/2)[x - (-2)]
y - 3 = (-7/2)x - 7
y = (-7/2)x - 7 + 3
y = (-7/2)x - 4
That is the equation required.
Answer:
282 square units
Step-by-step explanation:
I just answered this question
Answer:
As mentioned ABCD is a square
So <DEC is always 90 degree