A park is 4 times as long as it is wide.if the distance around the park is 12.5 kilometers,what is the area of the park
1 answer:
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Answer:
y = 9
Step-by-step explanation:
Calculate the slope m of line k using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (5, 8) and (x₂, y₂ ) = (2, y)
m = =
Given a line with slope m then the slope of a line perpendicular to it is
= -
The slope of line l is m = 3, thus slope of line k is
m = -
Equating the 2 slopes for line k
= -
( multiply both sides by - 3 )
y - 8 = 1 ( add 8 to both sides )
y = 9
Answer:
Step-by-step explanation:
3rd grade:
Number of girls = 16
Number of boys = 15
Total number of students = 31
4th grade:
Number of girls = 15
Number of boys = 18
Total number of students = 33
Formula for probability of an event <em>E</em> can be observed as:
Probability of picking a boy from <em>3rd grade</em>,
Probability of picking a boy from <em>4th grade</em>,
These are two independent events of picking a boy from 3rd grade and 4th grade.
So, probability the captain chooses 2 boys in the first pick can be found by multiplying (1) and (2) above.