Answer:
(4x-15)=77...corresponding angles
4x =77+15
4x =92
x =23
y =180-77
=103
PLEASE HELP! I REALLY NEED HELP!!!
Answer:
on which one?
giving brainliest!’ *easy*
what is it ???????????? pls help aspa
Answer:
This is curve sketching which is used in math
Step-by-step explanation:
we can see a graph plotting with the equation...of all sides
The gypsy moth is a serious threat to oak and aspen trees. A state agriculture department places traps throughout the state to detect the moths. When traps are checked periodically, the mean number of moths trapped is only 0.7, but some traps have several moths. The distribution of moth counts is discrete and strongly skewed, with standard deviation 0.8.
A) What are the mean and standard deviation of the average number of moths x in 60 traps?
B) Use the central limit theorem to find the probability (±0.01) that the average number of moths in 40 traps is greater than 0.4.
Answer:
a) The mean is 0.7 and the standard deviation is 0.1033.
b) 99.11% probability that the average number of moths in 40 traps is greater than 0.4.
Step-by-step explanation:
To solve this question, we need to understand the normal probability distribution and the central limit theorem.
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
When traps are checked periodically, the mean number of moths trapped is only 0.7, but some traps have several moths. The distribution of moth counts is discrete and strongly skewed, with standard deviation 0.8.
This means that [tex]\mu = 0.7, \sigma = 0.8[/tex]
A) What are the mean and standard deviation of the average number of moths x in 60 traps?
60 traps means that [tex]n = 60[/tex]
By the Central Limit Theorem
Mean [tex]\mu = 0.7[/tex]
Standard deviation [tex]s = \frac{0.8}{\sqrt{60}} = 0.1033[/tex]
The mean is 0.7 and the standard deviation is 0.1033.
B) Use the central limit theorem to find the probability (±0.01) that the average number of moths in 40 traps is greater than 0.4.
40 traps means that [tex]n = 40[/tex]
Mean [tex]\mu = 0.7[/tex]
Standard deviation [tex]s = \frac{0.8}{\sqrt{40}} = 0.1265[/tex]
This probability is 1 subtracted by the pvalue of Z when X = 0.4. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
By the Central Limit Theorem
[tex]Z = \frac{X - \mu}{s}[/tex]
[tex]Z = \frac{0.4 - 0.7}{0.1265}[/tex]
[tex]Z = -2.37[/tex]
[tex]Z = -2.37[/tex] has a pvalue of 0.0089
1 - 0.0089 = 0.9911
99.11% probability that the average number of moths in 40 traps is greater than 0.4.
How many moles are in 9.03 x 1023 Li atoms?
please help me
Answer:
1.5 moles
Step-by-step explanation:
number of moles = no. of particles / Avagadro number
therefore, number of moles. = 9.033 * 10^23 / 6.022 * 10^23
therefore, no. of moles = 1.5
There are 1.5 moles in 9.033 * 10^23 Lithium atoms.
55" TV: $669 with a 23% markup
Answer:
what is the question?
Step-by-step explanation:
The consumption of asparagus results in the release of methanethiol and S-methyl thioesters metabolites in the urine. To some people, these metabolites have a very distinctive odor, but others cannot detect the odor ("asparagus anosmia"). How common is asparagus anosmia?
In a genetic study aiming to find the genetic markers supporting the phenotype, researchers contacted 6909 participants in a large scientific cohort and found that 4161 had asparagus anosmia. Assuming that the cohort is representative of the American adult population, obtain a 90% confidence interval for the true population of Americans with asparagus anosmia. Use technology, for instance, the 1-PropZInt function in the TI graphing calculator or the Statistics / Proportion / 1-sample function (Confidence Interval tab) on CrunchIt!.
Answer:
The 90% confidence interval for the true population of Americans with asparagus anosmia is (0.5926, 0.6120).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
Researchers contacted 6909 participants in a large scientific cohort and found that 4161 had asparagus anosmia.
This means that [tex]n = 6909, \pi = \frac{4161}{6909} = 0.6023[/tex]
90% confidence level
So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
The lower limit of this interval is:
[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6023 - 1.645\sqrt{\frac{0.6023*0.3977}{6906}} = 0.5926[/tex]
The upper limit of this interval is:
[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6023 + 1.645\sqrt{\frac{0.6023*0.3977}{6906}} = 0.6120[/tex]
The 90% confidence interval for the true population of Americans with asparagus anosmia is (0.5926, 0.6120).
The visibility, in miles, from a certain spot on a hillside can be calculated using the function d=1.8x, where x is the height in feet above the valley floor. Fanon walks through elevations ranging from 16 feet to 25 feet above the valley. What are the minimum and maximum distances that she can see?
Answer:
23 i think im not allway right
Step-by-step explanation:
PLATO!! Please help!
Cara belongs to a knitting group that meets at the local craft shop. From observations, she has hypothesized that people purchase knitting
needles only if they are also purchasing yarn.
To confirm her thinking, Cara surveyed five people who came into the shop at various times throughout the day and asked them about their
past purchases.
Which of these factors is the most likely to skew the results of Cara's observations?
А. The participants are not randomized.
B. The sample size is too small to represent the population,
C. People have to buy yarn at a craft shop.
D. A control group is needed for an observational study.
Answer:
B. The sample size is too small to represent the population
Step-by-step explanation:
Logically speaking, this is correct because out of an ENTIRE day of customers entering a craft shop, more than 5 people enter the store. Due to this, Cara should've surveyed a larger number of customers.
Find the equation of the line
Use exact numbers
Thank you in advance!
Answer:
the answer is 3/6 cause you go up 3 and over 6
5. Alfredo made a container shaped like a triangular prism, as shown in the diagram
11 in.
What is the volume of the container in cubic inches?
Record your answer in the boxes. Be sure to use the correct place value.
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wpazsebu
Write an equation of the line in slope-intercept from (answer fast pls )
Y=
Which of the following shows the prime factorization of 200 using exponential notation?
Answer:
The prime factorization of 200 using exponential notation is [tex]2^{3}\times 5^{2}[/tex].
Step-by-step explanation:
First, we decompose the number given on statement by applying prime numbers in ascending order. We see that 200 is an even number, therefore, we infer that smallest prime number within is 2.
1) [tex]\frac{200}{2} = 100[/tex] (Even number)
2) [tex]\frac{100}{2} = 50[/tex] (Even number)
3) [tex]\frac{50}{2} = 25[/tex] (Even number)
4) [tex]\frac{25}{5} = 5[/tex] (Odd number, not a multiple of 3, but a multiple of 5 since last digit is 5)
5) [tex]\frac{5}{5} = 1[/tex] (Odd number, not a multiple of 3, but a multiple of 5 since last digit is 5)
Now, we construct the prime factorization using exponential notation:
[tex]200 = 2^{3}\times 5^{2}[/tex]
The prime factorization of 200 using exponential notation is [tex]2^{3}\times 5^{2}[/tex].
Answer:
2 * 3 * 5
Step-by-step explanation:
made a 100 on the text trust!!!!!
Write a report to the president of the company explaining the meaning of the solutions
Step-by-step explanation:
x is less than -10
x is greater than or equal to 25
Answer:
The negative part of the solution set is ignored, because you cannot produce a negative number of phones.
The company has at least an 80% success rate if the next 25 or more phones that are assembled work.
Because the company has already made 10 phones and 7 are not working, if the next 25 phones work, the 35th phone puts the company at its goal of 80% or more.
Step-by-step explanation:
edge 2021
If two different data sets have the same mean, the one with a wider range gives a better representation of its data.
Answer:
if this is a true or false question the answer would be true
Evaluate each expression if m= -4, n=1, p = 2, q=-6, r = 5, and t = -2.
|q-2mt|
Answer:
hi
Step-by-step explanation:
9xy + 5y +
Write the decimal in simplest fractional form: -1.375
HELLLLLPPPPPPPPP PLZZZZZZZZZZZZZZ
Answer:
D :)
Step-by-step explanation:
Because all of them are added by 12 constantly
Answer:
D
Step-by-step explanation:
because it represents 12 + x
1 + 12 = 13
2 + 12 = 14
etc
The area of a rectangular sign is 51 square feet. The base of the sign is 6 feet. What is the height of the sign?
A: 7.75 feet
B: 9 feet
C: 8.5 feet
D: 8.75 feet
Answer:
c
Step-by-step explanation:
Find the value of x.
Answer:
x = 3
Step-by-step explanation:
The angle is a right angle = 90 degrees
17x + 7 + 9x + 5 = 90°
26x + 12 = 90
-12 -12
26x = 78
/26 /26
x = 3
Hope this helps dude
HELP IM LITERALLY IN CLASS AND IM TAKING A TEST
Given the points (4,-3) and (0, -1), which other point lies on the line?
Which of the following is not a valid probability?
A. 1.3
B. 0.4
C. 1
D. O
Answer:
B and A
Step-by-step explanation:
because probabilities are between 0 being not possible and 1 being possible
A. Is not a valid probabily because it is a number great than 1.
Write an equation to represent the hanger.
Explain how to reason to find the value of x.
Answer:
Step-by-step explanation:
i’m having problems solving this too
Answer and Step-by-step explanation:
Half of them should be plain, so 46 plain bagels .
This is because the first set was split evenly, so that must mean this set should be split evenly as well.
Half of 92 is 46.
#teamtrees #PAW (Plant And Water)
Round the following to the nearest penny.
2.345
.
Answer:
2.35
Step-by-step explanation:
What is the answer for 3(x+5)=5x+7
Answer:
x = 4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightDistributive Property
Equality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityAlgebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
3(x + 5) = 5x + 7
Step 2: Solve for x
[Distributive Property] Distribute 3: 3x + 15 = 5x + 7[Subtraction Property of Equality] Subtract 3x on both sides: 15 = 2x + 7[Subtraction Property of Equality] Subtract 7 on both sides: 8 = 2x[Division Property of Equality] Divide 2 on both sides: 4 = xRewrite: x = 4Answer:
x=4 is your answer
Step-by-step explanation:
3(x+5)=5x+7
3x+15=5x+7
15-7=5x-3x
2x=8
x=8/2=4
Help please it says choose all answers that apply
Answer:
x = 1
x = 0
x = 1 1/4
Step-by-step explanation:
x = 1
x = 0
x = 1 1/4
The < sign means less than. -1/4 is less than 1, 0, and 1/4, and more than -3/4 and -1. So, 1, 0, and 1 1/4 are the right answers.
Hope that helps!
-Sabrina
What is the length of X
Answer:
37.21
Step-by-step explanation:
try the suggested option (see the attachment), the answer is marked with black colour.
Find the measure of the indicated angle that makes lines u and v parallel.
Please i really need help
Answer:
1. 135°
2. 114°
3. 118°
4. 81°
Step-by-step explanation:
Let "x" represent the measure of the indicated angle in each problem.
1. x = 135° (corresponding angles theorem)
2. x = 180° - 66° (same-side interior angles theorem)
x = 114°
3. x = 118° (alternate interior angles theorem)
4. x = 81° (alternate exterior angles theorem)
please help me i really need help please