Answer:
Perimeter = 317 m
Step-by-step explanation:
Given track is a composite figure having two semicircles and one rectangle.
Perimeter of the given track = Circumference of two semicircles + 2(length of the rectangle)
Circumference of one semicircle = πr [where 'r' = radius of the semicircle]
= 25π
= 25 × 3.14
= 78.5 m
Length of the rectangle = 80 m
Perimeter of the track = 2(78.5) + 2(80)
= 157 + 160
= 317 m
Therefore, perimeter of the track = 317 m
Answer:
9sqrd= 81
12sprd= 144
144+81= 225
= 15
so c=15
ps. use Pythagoras to help you.
Answer: -21.1°F
Step-by-step explanation:
-3.6 - 17.5 = -21.1°F
Answer:
109
Step-by-step explanation:
Answer:
68.268%
Step-by-step explanation:
We solve using z score formula
z = (x-μ)/σ, where
x is the raw score
μ is the population mean = $1900
σ is the population standard deviation = $200
For x = $1700
z = $1700 - $1900/$200
z = -1
Probability value from Z-Table:
P(x= 1700) = 0.15866
For x = $2100
z = $2100 - $1900/$200
= 1
Probability value from Z-Table:
P(x = 2100) = 0.84134
The probabilty of the population that has a rent price between $1700 and $2100
P(x = 2100) - P(x = 1700)
0.84134 - 0.15866
= 0.68268
Converting to percentage
= 0.68268 × 100%
= 68.268%
The percentage of the population that has a rent price between $1700 and $2100 is 68.268%
