Answer:
15.9% of the data will be greater than 235.3.
Step-by-step explanation:
Use a calculator with statistical functions. In this case you'll need the cumulative normal distribution: normcdf(.
Evaluate the following: normcdf(235.3, 10000,186.4, 48.9):
We get: 0.159, or 15.9%
15.9% of the data will be greater than 235.3.
The range of value X > 284.2 of data will be greater than 235.3.
What is a z-score?A Z-Score is a statistical measurement of a score's relationship to the mean in a group of scores.
We know that the upper 2.5% of data would be 97.5% of data.
We will use a z-score formula to solve our given problem.
[tex]\rm z=\dfrac{x-\mu}{\sigma}[/tex]
Where; z = z-score,
x = Random sample score,
[tex]\mu[/tex] = Mean,
[tex]\sigma[/tex] = Standard deviation.
We will use a normal distribution table to find a z-score corresponding to 97.5% area or 0.975.
We can see from the normal distribution table that the z-score corresponding to the area of 0.975 is 1.96.
[tex]\rm 1.96=\dfrac{x-186.4}{48.9}\\\\1.96 \times 48.9 =x-186.4\\\\x = 186.4 +95.84\\\\x=282.84[/tex]
Hence, the range of value X > 284.2 of data will be greater than 235.3.
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Sample A weighed 2.96 pounds, sample B weighed 3.8 pounds, and sample C weighed 4.417 pounds. How much more does sample C weigh than sample A? Betty collected another sample. Sample D weighed 0.67 pounds more than sample A. How much more does sample B weigh than sample D? 0.17 0.17 3.63 3.63 0.787 0.787 1.26
Answer:
4.417 - 2.96 = 1.457
3.8-3.63=0.17
Sample C weighs 1.457 more pounds than Sample A.
Sample B weights 0.17 more pounds than Sample D.
Jose Escalante worked at a skateboard shop for 40 hours at his regular wage of $7.50. He then worked for 8 hours at his overtime wage of time and a half. What is the total amount Jose earned?
Which fraction is equivalent to the fraction shown by this model. 12/9
Answer:
4/3
Step-by-step explanation:
12/9 is equivalent to 4/3, because you can divide both the numerator and denominator by the common factor of 3 and that will give you the correct fraction: 4/3.
Hope this helped.
This is a not graded question
Help!
Choose the graph of the system of equations.
y = 2x-1
y = -x + 1
Answer:
Option B is the correct graph.
Step-by-step explanation:
The slope in the first expression is 2, the graph shows this in option B.
You buy a new wheel for your bicycle. Thaw diameter of the bicycle wheel is 22 inches.What is the radius of the bicycle wheel?What is the circumference of the bicycle wheel?What is the area of the bicycle wheel?
Answer:
R = 11
C ≈ 69.12
A ≈ 380.13
Step-by-step explanation:
R = d ÷ 2
C = 2πr
A = 2πr²
I need help 2x+y=7 to solve for y
Answer:
X=7-y over 2
Step-by-step explanation:
Subtract yy from both sides.
2x=7-y2x=7−y
2 Divide both sides by 22.
x=\frac{7-y}{2}x=
2
7−y
The equation solved for y is y=7-2x.
The given equation is 2x+y=7.
We need to solve the given equation for y.
How to solve an equation?Solving equations is computing the value of the unknown variable still balancing the equation on both sides. An equation is a condition on a variable such that two expressions in the variable have equal value. The value of the variable for which the equation is satisfied is said to be the solution of the equation. An equation remains the same if the LHS and the RHS are interchanged.
Now, solving the equation for y, we get y=7-2x.
Put x=1, 2, 3, 4,....in the equation and find the y value.
So, put x=1 in equation y=7-2(1)=5.
Put x=2, we get
y=7-2(2)=3
Verification: Put the ordered pair (1, 5) in the equation and verify.
That is, 5=7-2(1)
⇒5=5
Therefore, the equation solved for y is y=7-2x.
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Dimensional analysis. An adult mosquito's lifespan is about 16 days. How many minutes is that?
Answer:
23040 minutes.
Step-by-step explanation:
Its 23040 minutes long because there are 60 minutes in an hour, an 24 hours in a day and 60 times 24 is 1440. Then you multiply 1440 by 16 which equals 23040.
PLEASE HELP QUICKLY AS POSSIBLE THANK YOU :)
PLEASE HELP ME WITH THIS TWO QUESTIONS I WILL MARK YOU BRAINLIEST PLEASE
The 8th graders are going to go on a field trip to see what their high school is like. There are 74 8th graders and their school has decided to rent vans to take them graders to the high school. If each van can fit 9 students, how many vans will their school need to hire?*PLEASE HELP I WILL MARK YOU BRAINLIEST
Summer workers for the Auster Landscaping Company make $14 an hour. One worker’s job was to create a stone wall for 4 hours. The client then gave the worker a $20 tip. How much money did the worker earn?**PLEASE HELP I WILL MARK YOU BRAINLIEST
Answer:
1. you will need 9 buses. 2. the worker earned $76
Step-by-step explanation:
1. 74 8th grader, each bus fits 9 students. 74 divided by 9 = 8.2 repeated, so i rounded up to 9.
2. Worker makes $14 an hour for four hours, then is tipped $20. 14 x 4= 56.
56 + 20 = 76. therefore he mad $76.
Answer:
for the first question i believe it's 8 vans
for the second question it is 76 because if u multiply $14 by 4 hours it gets u 56 meaning that in 4 hours they earned $56, but then the client gave them $20 as a tip so they all earned $76 in total
mark brainliest if u want to
Step-by-step explanation:
every negative integer J is less than or equal to its inverse written in mathematical language
Answer:
[tex]J \leq -\frac{1}{J}[/tex]
Step-by-step explanation:
Given
Negative integer J
Required
Write an expression as it is in the question'
First, we need to determine the inverse
[tex]Inverse = -\frac{1}{J}[/tex]
At this point, we have
[tex]Integer = -J[/tex]
[tex]Inverse = -\frac{1}{J}[/tex]
The required relationship between these expression becomes
[tex]J \leq -\frac{1}{J}[/tex]
Which is the decimal expansion of 7/22?
0.318
0.318
0.318
0.318
Answer: B
Step-by-step explanation: Cuz I got a calculator
Hope this helps
The decimal expansion of 7/22 is 0.3181818..., which means that the answer is [tex]0.3\overline{18}[/tex]
Option B is the correct answer.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example: so
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
To find the decimal expansion of 7/22, we need to perform a long division:
0.3181818...
-----------------
22 | 7.0000000
6.6
-----
3.4
3.3
---
10
8
--
20
18
---
20
18
--
200
198
---
20
22
--
-2
Now,
0.3181818 can be written as [tex]0.3\overline{18}[/tex]
Therefore,
The decimal expansion of 7/22 is 0.3181818..., which means that the answer is 0.3181818...
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What is the range of this function?*
ТУ
5
1
Х
-5
0
-3
1
3
5
-3
-5
All Real Numbers
13.00
O Does Not Exist
Answer:
Hey there!
The range of this function is all numbers to three.
Thus, this can be expressed as (-∞, 3]
Let me know if this helps :)
People wait for sales to_______
1. buy the most goods
2. get the best price for a good
2. get the best price for a good
what is 12x8 please tell me i need to know :) ")
Answer:
96
Step-by-step explanation:
10 x 8 = 80
2 x 8 = 16
so 80 + 16 = 96 :)
The equivalent value of the equation is A = 96
Given data ,
Let the equation be represented as A
Now , the value of A is
Let the first number be p = 12
Let the second number be q = 8
Now , A = pq
On simplifying the equation , we get
A = 12 x 8
So , the left hand side of the equation is equated to the right hand side by the value of 12 x 8
On multiplying 12 times 8 , we get
A = 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8
A = 96
Therefore , the value of A = 96
Hence , the expression is A = 96
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Find the product. -25(-30)
Answer: 750
25 times 3 is 75. Tack on a zero to get 25 times 30 = 750
The two negatives cancel each other out so the result is positive.
Find the distance between the endpoints (7,8) (4,2) A.10.8 B.2.2 C.6.7 D.14.9
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{6.7}}}}}[/tex]
Option C is the correct option.
Step-by-step explanation:
Let the points be A and B
Let A ( 7 , 8 ) be ( x₁ , y₁ ) and B ( 4 , 2 ) be ( x₂ , y₂ )
Finding the distance between these points
[tex] \boxed{ \sf{distance \: = \: \sqrt{ {(x2 - x1)}^{2} + {(y2 - y1)}^{2} } }}[/tex]
[tex] \dashrightarrow{ \sf{ \sqrt{ {(4 - 7)}^{2} + {(2 - 8)}^{2} } }}[/tex]
[tex] \dashrightarrow{ \sf{ \sqrt{ {( - 3)}^{2} + { (- 6)}^{2} } }}[/tex]
[tex] \dashrightarrow{ \sf{ \sqrt{9 + 36}}} [/tex]
[tex] \dashrightarrow {\sf{ \sqrt{45} }}[/tex]
[tex] \dashrightarrow{ \sf{6.7 \: \: units}}[/tex]
Hope I helped!
Best regards! :D
Given that x = −2 and y = 5, what is the value of 3x+4y−2
Answer:
12
Step-by-step explanation:
Note:
x = -2 ; y = 5
Plug in -2 for x and 5 for y.
3(-2) + 4(5) - 2
Remember to follow PEMDAS. First solve for multiplication, then combine:
3 * -2 = -6
4 * 5 = 20
-6 + 20 - 2
Combine like terms:
20 - 6 - 2 = 12
12 is your value.
~
Answer:
12
Step-by-step explanation:
When answering these types of problems make sure you simplify the expression before substituting
In this case it is not necessasry so substitute x for -2 and y for -5. The expression is now ...
3(-2) + 4(5) - 2
Now just add like term
-6 + 20 -2
12
A group of 4 children and 8 adults are going to the zoo. Each child tickets cost $10, and each adult tickets cost $15. How much will the group spend on tickets to the zoo?
Answer:
160
Step-by-step explanation:
4 times 10 is 40
8 times 15 is 120
add 40 plus 120 and get 160
Step-by-step explanation:
4×10+8×15
=40+120
=$160
3.777... into a mixed number
Hey there! I'm happy to help!
Let's call our fraction x.
x=3.777......
We want to get rid of the repeating stuff. If we multiply our fraction by 10, we get 10x=37.7777.
We see that if we subtract x from 10x, the repeating numbers will be cancelled out. Let's do this.
10x=37.7777
-
x=3.77777
=
9x=34
We divide both sides by 9.
x=34/9=3 7/9.
Have a wonderful day! :D
All of the following represent the same expression except _____.
19 less than 25
25 less than 19
19 subtracted from 25
25 minus 19
Answer:
25 less than 19
Step-by-step explanation:
Required
Determine the odd one among the list of options
Start by taking the options one after the other;
1. 19 less than 25:
This implies 25 - 19
2. 25 less than 19
This implies 19 - 25
3. 19 subtracted from 25
This implies 25 - 19
4. 25 minus 19
This implies 25 - 19
From the above analysis, the off option is option (2);
Answer:
25 less than 19
Step-by-step explanation:
Required
Determine the odd one among the list of options
Start by taking the options one after the other;
1. 19 less than 25:
This implies 25 - 19
2. 25 less than 19
This implies 19 - 25
3. 19 subtracted from 25
This implies 25 - 19
4. 25 minus 19
This implies 25 - 19
From the above analysis, the off option is option (2);
A carpenter built a triangular support structure for a roof. Two of the angles of the structure measure 37° and 55°. Find the measure of ∠RTP, the angle formed by the roof of the house and the roof of the patio. PLEASE HELP PLEASE HELP
Answer:
If you are asking for the last angle, it's 88 degrees.
Step-by-step explanation:
A triangle is 180 degrees. If you have two angles, then you subtract the two angels from 180 to get the last angle. 180 - 92 is 88 so yeah.
Someone please help me!!!
I believe the answer is B: -3/4.
part 3. Use the Laws of sines. Please show work. Round to the nearest tenth.
Answer:
9) 47.1°
10) 23.0°
11) 33.0°
12) 22.0°
Step-by-step explanation:
Please see the attached pictures for full solution.
On Monday Ken spent half of his money on a new game. The next day he earned $12 mowing lawns. He now has #32. How much money did ken have before he bought the game?
Answer:
Step-by-step explanation:
ken has 64 dollars
Roxannee is buying suppliers for a catering job. She bought a piece of salmon for $31.28. If the cost of the salmon was $9.20 per pund, how many pounds did she buy? (Show your work)
Answer:
she bought 3.4 pounds
Step-by-step explanation:
What is the square root of 75 in simplest form
Answer:
[tex]\sqrt{75}[/tex]
Step-by-step explanation:
If it was actually square-rooted, it would be 8.660254038, but that is not the simplest form. Therefore, the simplest from of the square root of 75 is the square root of 75 itself, which is [tex]\sqrt{75}[/tex]. Hope this helped!
Complete the answer. 8 is 1/10 of
Answer:
80
Step-by-step explanation:
1/10 = 10% = 0.1
0.1 x 8 = 0.8 = 80%
2 tons is what percent of 206 tons?
Answer:
0.971%
Step-by-step explanation:
A percentage is simply a ratio to a whole. If we assume 206 tons to be the whole, we can say this:
2 tons / 206 tons == 0.00971
And the percentage is out of 100 so:
0.00971 * 100 == 0.971 %
Hence, 2 tons is 0.971% of 206 tons.
Cheers.
The propagation of fatigue cracks in various aircraft parts has been the subject of extensive study in recent years. The accompanying data consists of propagation lives (flight hours/104) to reach a given crack size in fastener holes intended for use in military aircraft (A????1Statistical Crack Propagation in Fastener Holes Under Spectrum Loading,A????1 J. Aircraft, 1983: 1028A????11032):
.736 .863 .865 .913 .915 .937 .983 1.007 1.011 1.064 1.109 1.132 1.140 1.153 1.253 1.394
Compute and compare the values of the sample mean and median.
By how much could the largest sample observation be decreased without affecting the value of the median?
Answer:
[tex]Mean = 1.030[/tex]
[tex]Median = 1.009[/tex]
[tex]Difference = 0.141[/tex]
Step-by-step explanation:
Given
Data:
.736, .863, .865, .913
.915, .937, .983, 1.007
1.011, 1.064, 1.109, 1.132
1.140, 1.153, 1.253, 1.394
Solving (a): Mean and Median
Mean
Mean is calculated as thus;
Mean = Summation of observation divided by number of observations[tex]Mean = \frac{.736 +.863 +.865 +.913 +.915 +.937 +.983 +1.007 +1.011 +1.064 +1.109 +1.132 +1.140 +1.153 +1.253 +1.394}{16}[/tex]
[tex]Mean = \frac{16.475}{16}[/tex]
[tex]Mean = 1.0296875[/tex]
[tex]Mean = 1.030[/tex] Approximated
Median
Since the number of observation is 16;
[tex]Median = \frac{16 + 1}{2}[/tex]
[tex]Median = \frac{17}{2}[/tex]
Median = 8.5th item
This can be determined by calculating the average of the 8th and 9th item
[tex]Median = \frac{1}{2}(1.007 + 1.011)[/tex]
[tex]Median = \frac{1}{2}(2.018)[/tex]
[tex]Median = 1.009[/tex]
Solving b:
For the median to remain 1.009, the largest sample (1.394) must be greater than or equal to 1.253
Calculating the difference:
[tex]Difference = 1.394 - 1.253[/tex]
[tex]Difference = 0.141[/tex]
Hence, it can be reduced by 0.141