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Free_Kalibri [48]
3 years ago
10

Wendy wants to run 3 miles. Each lap around the track at her school is mile.

Mathematics
1 answer:
aliina [53]3 years ago
7 0

Answer:

Wendy needs to run 3 laps to run 3 miles.

Hope this helps. :)

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There are twice as many Robins has blue jays and their 21 altogether how many blue jays are there
Lunna [17]
R + b = 21
2b = r

now we sub eq 2 into eq 1
r + b = 21
2b + b = 21
3b = 21
b = 21/3
b = 7

2b = r
2(7) = r
14 = r

so there are 7 bluejays (b) and 14 robins (r)...for a total of 21
5 0
3 years ago
Help please!!
zvonat [6]
(a/b) / (c/d) = (a/b)*(d/c)  that is the rule so:

(3/4)/(3/16) is equal to:

(3/4)*(16/3) which is equal to 

16/4

4
4 0
3 years ago
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Help me find area and perimeter of this problem
mylen [45]

Answer: 16.28

Step-by-step explanation: You need to find the area of the half circle so 4*3.14 dvided by 2 that is 6.28 then for the tryangle you do base times hight devided by 2 and you get 10 so add then and it should be 16.28

7 0
3 years ago
A video game arcade offers a yearly membership with reduced rates for game play. A single membership costs $60 per year. Game to
ad-work [718]
The answer to this problem is y= 1/10x + 60, the y-intercept of the function is $60, and the range is {y| y (less than or equal to) 60}
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Will mark brainiest!!<br> Only answer questions a and b
k0ka [10]

Answer:

f1 ( x ) valid pdf . f2 ( x ) is invalid pdf

k = 1 / 18 , i ) 0.6133 , ii ) 0.84792

Step-by-step explanation:

Solution:-

A) The two pdfs ( f1 ( x ) and f2 ( x ) ) are given as follows:

                     

- To check the legitimacy of a continuous probability density function the area under the curve over the domain must be equal to 1. In other words the following:

                   

- We will perform integration of each given pdf as follows:

                   

                   

Answer: f1 ( x ) is a valid pdf; however, f2 ( x ) is not a valid pdf.

B)

- A random variable ( X ) denotes the resistance of a randomly chosen resistor, and the pdf is given as follows:

                       if  8 ≤ x ≤ 10

                               0  otherwise.

- To determine the value of ( k ) we will impose the condition of validity of a probability function as follows:

                     

- Evaluate the integral as follows:

                     ... Answer

- To determine the CDF of the given probability distribution we will integrate the pdf from the initial point ( 8 ) to a respective value ( x ) as follows:

                     

To determine the probability p ( 8.6 ≤ x ≤ 9.8 ) we will utilize the cdf as follows:

                   p ( 8.6 ≤ x ≤ 9.8 ) = F ( 9.8 ) - F ( 8.6 )

                   p ( 8.6 ≤ x ≤ 9.8 ) =

ii) To determine the conditional probability we will utilize the basic formula as follows:

               p ( x ≤ 9.8  | x ≥ 8.6 ) = p ( 8.6 ≤ x ≤ 9.8 ) / p ( x ≥ 8.6 )

               p ( x ≤ 9.8  | x ≥ 8.6 ) = 0.61333 / [ 1 - p ( x ≤ 8.6 ) ]

               p ( x ≤ 9.8  | x ≥ 8.6 ) = 0.61333 / [ 1 - 0.27666 ]

               p ( x ≤ 9.8  | x ≥ 8.6 ) = 0.61333 / [ 0.72333 ]

               p ( x ≤ 9.8  | x ≥ 8.6 ) = 0.84792 ... answer

Hope it helps! ;)

4 0
3 years ago
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