The identity property of addition is any number plus zero equals that number.
the commutative property of addition is when the order of the numbers does not change the sum.
What is the mean of 30,000,30,00040,000,40,000,40,000,50,000,190,000
bonufazy [111]
Answer: 60,000
Step-by-step explanation:
Mean is calculated by sum of data set divided by number of data set.
Mean=30,000+30,000+40,000+40,000+40,000+50,000+ 190,000/ 7
= 420,000/7
= 60,000
Answer:
Read step by step explanation
Step-by-step explanation:
The owner already knows that the limit for the average time delivered pizzas is 38 minutes. So we conclude
1.-The resulting mean from sample data ( x ) ( 27 customers) need to be smaller than 38 minutes, any value of sample above 38 minutes means more time for the delivery action and will indicate a failure for the future project
2.-As sample size is smaller than 30 the test has to be t-student one tail test to the left
Test hypothesis
Null hypothesis H₀ x = 38
Alternative hypothesis Hₐ x < 38
We should test at a significance level α = 0,05 (α = 5%)
If the result of the test is to accept H₀ delivery project won´t be implemented, if on the other hand, H₀ is rejected then in the condition of the alternative hypothesis we accept Hₐ the sample indicates that we have a smaller average time than 38 minutes.
Answer:
<em>37</em>
Step-by-step explanation:
To find the number of calories per hour, you need to divide
185 ÷ 5 = 37
When divided, you get the unit rate or <em>37 calories per hour</em>
Answer:
10
Step-by-step explanation:
![{14}^{2} = ( {9}^{2} + {x}^{2} )](https://tex.z-dn.net/?f=%20%7B14%7D%5E%7B2%7D%20%20%3D%20%28%20%7B9%7D%5E%7B2%7D%20%20%2B%20%20%7Bx%7D%5E%7B2%7D%20%29)
![196 = 81 + {x}^{2}](https://tex.z-dn.net/?f=196%20%3D%2081%20%2B%20%20%7Bx%7D%5E%7B2%7D%20)
![196 - 81 = {x}^{2}](https://tex.z-dn.net/?f=196%20-%2081%20%3D%20%20%7Bx%7D%5E%7B2%7D%20)
![115 = {x}^{2}](https://tex.z-dn.net/?f=115%20%3D%20%20%7Bx%7D%5E%7B2%7D%20)
![x = \sqrt{115}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Csqrt%7B115%7D%20)
X = 10.7