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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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5/16 divide by 20/40= SHOW WORK
Elenna [48]
5/16 divided by 20/40
5/16 times 40/20
5 times 40= 200
16 times 20=320
200/320=20/32=10/16=5/8

Final Answer: 5/8
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6 0
3 years ago
Substitute: 7.5x = 5.5x + 10
Umnica [9.8K]

The value of x is 5

<h3>What are algebraic expressions?</h3>

Algebraic expressions are expressions made up;

  • Factors
  • variables
  • terms
  • constants

They also consist of mathematical operations such as addition, multiplication, division, subtraction, parenthesis, brackets, etc

We have the expression as;

7.5x = 5.5x + 10

collect like terms

7.5x - 5.5x = 10

subtract the like terms

2.0x = 10

Make 'x' the subject

x = 10/2. 0

x = 5

Thus, the value of x is 5

Learn more about algebraic expressions here:

brainly.com/question/4344214

#SPJ1

7 0
2 years ago
Describe the steps you take to order 5/8(5 on top, 8 on bottom fraction), 0.8, 3/5(3 on top)
sergeinik [125]
First change 0.8 to a fraction which is 4/5. Then find a common denominator between 5/8, 4/5, and 3/5. The common denominator is 40. So then you multiply the numerator by the same number you multiply the denominator by. I'll do 5/8 as an example; to get 40 as your denominator multiply 8 by 5, and then multiply 5 by 5. The fraction you'll get is 25/40. The rest of the fractions are 4/5 - 32/40 and 3/5 - 24/40. Then order them either from smallest to largest (24/40, 25/40, 32/40) or largest to smallest (32/40, 25/40, 24/40).
8 0
3 years ago
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