Answer:
0.31 x 8=2.48
(>'-'<)
An article presents a study of the effect of the subbase thickness on the amount of surface deflection caused by aircraft landing on an airport runway. In six applications of a 160 kN load on a runway with a subbase thickness of 864 mm, the average surface deflection was 2.34 mm with a standard deviation of 0.090 mm. Find a 90% confidence interval for the mean deflection caused by a 160 kN load. Round the answers to three decimal places. The 90% confidence interval is ( , ).
Answer:
The answer is below
Step-by-step explanation:
The z score is used to determine by how many standard deviations the raw score is above or below the mean.
Given that: sample size (n) = 6, standard deviation (σ) = 0.09 mm, mean (μ) = 2.34 mm
The confidence interval = 90% = 0.9
α = 1 - 0.9 = 0.1
α / 2 = 0.05
The z score of 0.05 is the same as the z score of 0.45 (0.5 - 0.05) which is 1.645.
The margin of error is given as:
[tex]E=Z_{\frac{\alpha}{s} }*\frac{\sigma}{\sqrt{n} }[/tex]
[tex]E=1.645*\frac{0.09}{\sqrt{6} }=0.06\ mm[/tex]
The confidence interval = μ ± E = 2.34 ± 0.06 = (2.28, 2.40)
The confidence interval is between 2.28 mm and 2.4 mm
How to solve 8w − 3r = 45 for r.
Answer:
W= 45/ - 3 = 15/-1
Step-by-step explanation:
Answer: 45/-3 = 15/-1
Step-by-step explanation:
1) What will be the total interest paid on a 30-year mortgage loan
of $135,000 at 4.296 interest?
Answer:
173 988
Step-by-step explanation:
£135,000 of 4.296% times 30
Convert the problem to an equation using the percentage formula: P% * X = Y.
P is 10%, X is 150, so the equation is 10% * 150 = Y.
Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10.
A shirt is on sale for 25% off, and the total comes out to $15. What is the original price?
HELP ME PLEASE will give brainliest
Answer:
(1,-4)
Step-by-step explanation:
Find the next two numbers in the pattern.
5, −20, 80, −320, …
Answer:
-12
Step-by-step explanation:
A car company uses the table below to show customers the approximate amount of gas used when a car has been driven a certain number of miles.
Gas Use
Miles driven
Gallons of gasoline used
110
2.75
220
5.5
300
7.5
430
?
If the car always uses the same amount of gasoline each mile, how many gallons of gasoline would be needed to travel 430 miles?
9.5
10.75
13
15.75
Answer:
10.75
Step-by-step explanation:
Answer:
10.75 gallons
Step-by-step explanation:
The sum of two consecutive integers is 26. What are the integers? Question does not specify even or odd consecutive integers. Please HELP!
You have 2 cups of raisins. A recipe calls for 3/8 cup of raisins per serving. How many FULL Servings can you make?
Answer:
5
Step-by-step explanation:
There are 2 cups of raisins
A recipe requires 3/8 cup of raisins per serving
Therefore the number of full servings that can be made can be calculated as follows
= 2 ÷3/8
= 2 × 8/3
= 16/3
= 5.3333
Hence the number of full servings that can be made is 5
How to round the decimal 5.37
Answer:
5.00
Step-by-step explanation:
You only round up if its .50 or greater. So, because it is less than that, you round down to 5.00
Identify the given random variable as being discrete or continuous. The number of phone calls between New York and California on Thanksgiving day Group of answer choices Discrete
Answer:
Discrete
Step-by-step explanation:
Given
Number of phone calls between two cities on Thanks giving day
Required
Discrete or Continuous
Number of phone calls can be represented as thus:
0, 1, 2 , 3 , 10, 20, 100 or any other positive whole numbers
Only discrete data take form of the above.
Hence, "Discrete" answers the question
The given random variable is discrete and this can be determined by observing the given data.
Given :
The number of phone calls between New York and California on Thanksgiving day.
The following steps can be used in order to determine the given random variable as being discrete or continuous:
Step 1 - According to the given data, the number of phone calls between New York and California on Thanksgiving day.
Step 2 - So, the total number of calls on thanksgiving day may be 0, 2, 6, 9, 15, 100, 115, or whole positive number.
Step 3 - So, from the above steps, it can be concluded that the given random variable is discrete.
For more information, refer to the link given below:
https://brainly.com/question/17429689
This question might get deleted but im grounded and can yall spamm my mom so I can get my phone back plz (Plz dont Call, just text she dosen't answer random calls)
................girl ik u not grounded shudap
A local ice cream shop had 320 customers in one day.
45% of those customers bought a waffle cone.
How many customers bought a waffle cone?
Answer: 144
Step-by-step explanation:
45 percent of 320 is 144
Answer:
144 people bought a waffle cone
Step-by-step explanation:
Step 1:
45/100 = x/320 Equation
Step 2:
100x = 14,400 Multily
Step 3:
x = 14,400 ÷ 100 Divide
Answer:
x = 144
Hope This Helps :)
I like trains what does this mean I do not know
Answer:
it means that you like trains
Step-by-step explanation:
Answer:
trains like tomas the train
If it takes Matthew an hour to get to his friend’s house, and two hours if he drives 25 mph slower, how far away does Matthew’s friend live?
What is (2b-b)+c+3b+7
Answer:
4b+c+7
Step-by-step explanation:
Combine like terms: 2b-b= b + 3b = 4b
4b + c + 7
I hope this helped, please mark Brainliest, thank you!
Katie ran four miles she ran at a rate that was 1.1 miles per mile slower than Jasmine Jasmine ran at a rate of 8.4 minutes per mile for how many minutes did Katie run? Explain how you determined your answer.
Answer:
Katie spent 29.2 minutes
Step-by-step explanation:
I hope this helps!!!
Answer:
29.2 minutes
Step-by-step explanation:
If Jasmine ran 5 miles in 42 minutes. Katie ran 4 miles. She ran at a rate that was 1.1 minutes per mile slower than Jasmine. For how many minutes did Katie run? Explain how you determined your answer. So basically When you run slower you subtract so 8.4 minus 1.1 is 7.3. And then multiply it by 4 and get 29.2 You can check your answer by dividing 29.2 by 7.3
Please help answer it's easy it's 7th grade work I'll give you brainliest
just figure out the relationship between 3 and 12 and do the same thing to 2
so obviously, 3 x 4 is 12, so just multiply 2 by 4, which is 8.
x=8
Answer:
8
Step-by-step explanation:
2/3 = x/12
Numerator:
2×4=8
Denominator
3×4=12
What u do on the bottom you must do on the top
30 points
Jose bought 750 bags of peanuts for $375.00. He intends to sell each bag for $0.15 more than he paid. How much should he charge for each bag?
what is 12 divided by 3 fourths
Answer:
4
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
12/(3/4)
12/.75=16
x plus three is less than 0.
state the possible values.
Answer:
Any number -4 and below.
Step-by-step explanation:
Find the area of the irregular figure
Answer:
75Step-by-step explanation:
5*3= 15
9*4= 32
4*7= 28
Total: 75
PLEASE HELP ASAP WILL GIVE BRAINLEIST
Solve for x:
9x + 3 = 75
When a number is subtracted from half of its own square the result is 60. What is the number?
Answer:
-10 or 12
Step-by-step explanation:
1/2 y2 -y =60
Multiply both sides by 2
y2 - 2y =120
Subtract 120 from both sides
y2 - 2y -120 = 0
Factor the left side ( y+10) (y -12 =0)
By zero product property, y= -10,12
So the number is -10 or 12
I don't if this was helpful sorry if its not
how much percentage is 0.025 % of 240 percentage of 1.5 of 0.9
Answer:
0.1
Step-by-step explanation:
=> { (0.025% of 240% of 1.5)/0.9 }x 100
=> [ { (25/100000) x (240/100) x 15 } / 9 ] x 100
=> 0.1
Morgan fills a 1-liter jar with water from the pond. She uses a 100-milliliter cup to scoop water out of the pond and pour it into the jar. How many times will Morgan scoop water from the pond to fill the jar?
Answer:
10
Step-by-step explanation:
1 liter = 1000 ml1000 ÷ 100 = 10I hope this helps!
at a simple annual interest rate of 4.5 percent, haw many years will it take Sam to earn 135 dollars on an original account of 1,000
9514 1404 393
Answer:
3
Step-by-step explanation:
The simple interest formula is useful here:
I = Prt
where I is the interest earned on principal P invested at rate r for t years.
Filling in the given information, we can solve for the unknown.
135 = 1000·0.045·t
135/45 = t = 3
It will take 3 years for Sam to earn $135 on his account.
Johanna rode her bike 7 miles to a lake . She rode 3/4 of the distance to the lake before lunch
Answer:
The answer would be 5.25 miles :)
which point represents the vertex of the marked angle? see photo above
Answer:
B
Step-by-step explanation:
A vertex is where two lines intersect
What conditions are required by the central limit theorem before a confidence interval of the population mean may be created
Answer:
In the clarification segment elsewhere here, the definition including its query is mentioned.
Step-by-step explanation:
Unless the sample group exceeds 30 or even more, their underlying demographic doesn't have to be positively correlated since the Central limit theorem claims that even if sample sizes with n observations being obtained from every other population. Then, whenever n is high, [tex]n \geq 30[/tex], the sampling distribution of the distribution of values has been determined roughly normally.