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Yuri [45]
3 years ago
10

Hellppo due June 30th

Mathematics
2 answers:
Leya [2.2K]3 years ago
4 0
Basically find the area of the bigger and smaller circle

a = pi * r^2

a = 3.14 * 7^2
a = 3.14 * 49
a = 153.86

a = 3.14 * 11^2
a = 3.14 * 121
a = 379.94

subtract the smaller area from the larger area:

379.94 - 153.86 = 226.08 sq cm
Ivan3 years ago
3 0

Answer:

Step-by-step explanation:

Non-shaded region area:

A= 3.14 x 7^2=153.86 cm²

The whole circle area:

A=3.14 x 11^2= 379.94 cm²

Area for ONLY the shaded region:

A= 379.94 - 153.86= 226.08 cm²

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The answer would be 73.(3)
6 0
3 years ago
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-9.3 is bigger if you put the fraction into a decimal it is smaller then the -9.2
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7tq=? <br><br> Hint: t=5 and q=4
s344n2d4d5 [400]

Answer: 140

Step-by-step explanation:

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7tq will be: multiply the value of tq by 7

=7× 5×4

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I hope this is clear.

8 0
3 years ago
The average age of all students at a certain college is 22 years and the standard deviation is 2 years. What is the probability
Marianna [84]

Answer:

The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159

Step-by-step explanation:

According to the given data we have the following:

mean = μ= 22

standard deviation = σ = 2

n = 100

μx = 22

σx=σ/√n=2/√100=0.2

Therefore, P( x < 21.8)=P(x-μx)/σx<(21.8-22)/0.2

=P(z<-1)

= 0.159

The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159

3 0
4 years ago
What is the slope of a line passing through (5, 9) and (7, 15)?
LenaWriter [7]
Slope = change in y / change in x
 
          = (15 - 9) / (7 - 5)
 
          =   6 / 2
    
          = 3   

6 0
3 years ago
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