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pav-90 [236]
3 years ago
14

A police officer is concerned about speeds on a certain section of interstate 95. the data accompanying this excersise show the

speeds of 40 cars on a saturday afternoon. The speed limit on this portioin of interstate 95 is 66 mph. Specify the competing hypotheses in order to determind if the average speed is greater than the speed limit. calculate the value of the test statistic

Mathematics
1 answer:
marysya [2.9K]3 years ago
7 0

Answer:

Please see attachment.

Step-by-step explanation:

Please see attachment.

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A square with a side length of 5 inches has a area of 25 in<br><br> true or false
Goryan [66]

Answer:

TRUE

Step-by-step explanation:

5 x 5 = 25 in²

6 0
3 years ago
Leah's age is twice her cow old are Leah and her cousin?usin's age. If they add their ages together they get 36. How old are Lea
nignag [31]
Okay so lets call Leah "L" and her cousin "C". We know that L+C=36 ... we also know that Leah is twice her cousins age. Therefore, L=2 times C, or L=2C. This is because Leah's age is equivalent to twice as much as her cousin's. 
Now that you know that L=2C, you can plug this back into the equation. This should make it so that's there's only one variable now! 
L+C=36
(2C)+C=36   ... here we subbed in L=2C
3C=36     ... we add up the C's
C=12   ... we isolate for C by dividing both sides by 3

So her cousin's age is 12 years old. Leah's age is twice that. Thus, she's 24. If you add the two up: 12+24, you indeed get 36. Hope that helps :))
4 0
3 years ago
Please answer these questions and please show your work. I'm giving 30 points for this question, so please answer honestly.
ASHA 777 [7]

Answer:

just use symbolab it gives you the answer and the work

Step-by-step explanation:

i would show you but its easier if you do it

7 0
3 years ago
PLEASE HELP ME! NO LINKSSSSSS!!!
Andrews [41]

In 4 days your family drive 5/7 of a trip. Your rate of travel is the same throughout the trip. The total trip is 1250 miles. How many more days until you reach your destination?

Find the amount traveled in one day by dividing

(5/7)/4 = 5/28 of the trip

How many days would it take to add up to 1

1/(5/28) = 5.6 days total

since we already traveled for 4 days, we have 1.6 more days to go

7 0
3 years ago
In a football stadium, 43% of the crowd cheering for Team A, and 52% of the crowd is female. 19% of the crowd is cheering for Te
musickatia [10]
P(TeamA) = 0,43
P(Female) = 0,52
P(TeamA and Female) = 0,19
P(TeamA or Female) = ?

P(TeamA or Female) = P(TeamA) + P(Female) - P(TeamA and Female) <=>

P(TeamA or Female) = 0,43 + 0,52 - 0,19 <=>

P(TeamA or Female) = 0,76 or 76%
4 0
3 years ago
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