Answer:
y = -16
Step-by-step explanation:
y = -3(12) + 20
y = -36 + 20
y = -16
Hope this helps and pls do mark me brainliest if you can:)
What is the number of sides of a regular polygon whose each exterior angle has a measure of 45 {\ circ 45 ∘?
The regular polygon has 8 sides and an external angle of 45 degrees on each side.
What is a polygon?A polygon (/pln/) is a closed polygonal chain made up of a finite number of straight line segments that are joined to form a planar figure in geometry (or polygonal circuit).
A polygon is a region that is bounded by a bounding circuit, a bounding plane, or both.
A polygonal circuit's segments are referred to as its edges or sides.
The polygon's vertices (plural: vertices) or corners are the places where two edges converge.
A solid polygon's body is another name for its inside.
A polygon with n sides is referred to as a "n-gon"; a triangle is an example of one.
Simple polygons do not overlap one another.
Mathematicians frequently focus on small polygons' bounding polygonal chains, and they frequently define.
According to our question-
Interior Angles- Angles within a shape, usually a polygon, are referred to as the interior angles of that shape.
∴
Number of sides of a regular polygon
=360/45
8
Hence, The regular polygon has 8 sides and an external angle of 45 degrees on each side.
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Jasim works in a restaurant.
The table shown gives his rates of pay.
Day
Mon to Fri
Weekend
Jasim worked for a total of 30 hours last week.
He worked 12 of these hours at the weekend.
Work out Jasim's pay for last week.
Rate of pay
£8.70 per hour
£10.80 per hour
Answer:
Step-by-step explanation:
The option that is most suitable for tabular data will be provided by-
Jasim's last week's total pay was £286.2.
Describe tabular data.Tabular data is data presented in the form of rows and columns.
Here,
Total time for which Jasim works last week = 30 hours
Time for which Jasim works at the weekend = 12 hours
Time for which Jasim works at the weekdays = (30 - 12) hours
= 18 hours
Jasim's pay during weekdays = £8.70
Jasim's pay during weekends = £10.80 per hour
Jasim's pay during weekdays last week = £8.70 \(\times\) 18
= £156.6
Jasim's pay during weekends = £10.80
Jasim's pay during weekends = £10.80 per hour
Jasim's pay during weekdays last week = £10.80 \(\times\) 12
= £129.6
Total pay of Jasim for last week = £(156.6 + 129.6)
= £286.2
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suppose a similar survey will be given to vaccine-eligible people in canada by canadian health officials. a 99 percent confidence interval for the proportion of people who will have received flu vaccine is to be constructed. what is the smallest sample size that can be used to guarantee that the margin of error will be less than or equal to 0.02?
The sample size would need to be at least 1130 to guarantee a margin of error of 0.02 or less.
To calculate the sample size required to construct a 99 percent confidence interval for the proportion of people who will have received flu vaccine in Canada, the following formula can be used:
n = (Zα/2)2 * P * (1-P) / E2
Where n is the sample size, Zα/2 is the z-score for 99 percent confidence (2.58), P is the estimated proportion of the population that will receive the flu vaccine (assumed to be 0.5), and E is the margin of error (0.02).
Plugging in the values, we get:
n = (2.58)2 * 0.5 * (1-0.5) / (0.02)2 = 1130
Therefore, the sample size would need to be at least 1130 to guarantee a margin of error of 0.02 or less.
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Given f(x) = 6(1 - x), what is the value of f(-8)?
Answer:
6(1-(-8)= 54
Step-by-step explanation:
Plug negative 8 in for x and solve the equation
Solve for all values of x in simplest form 1+3|x-5|=10
Answer:
x = 8 x = 2
Step-by-step explanation:
1+3|x-5|=10
Subtract 1 from each side
1-1+3|x-5|=10-1
3|x-5|=9
Divide by 3
3/3|x-5|=9/3
|x-5|=3
There is a positive and negative solutions
x-5 =3 x-5 = -3
Add 5 to each side
x-5+5 = 3+5 x-5+5 = -3+5
x = 8 x = 2
Answer:
\(x=2,8\)
Step-by-step explanation:
So we have the equation:
\(1+3|x-5|=10\)
First, subtract 1 from both sides:
\(3|x-5|=9\)
Now, divide 3 from both sides:
\(|x-5|=3\)
Definition of absolute value:
\(x-5=3\text{ or }x-5=-3\)
For the left, add 5 to both sides.
For the right, add 5 to both sides:
\(x=3+5\text{ or } x=-3+5\\x=8\text{ or }x=2\)
Thus, the answers are:
\(x=2,8\)
a data analyst uses the bias() function to compare the actual outcome with the predicted outcome to determine if the model is biased. they get a score of 0.8. what does this mean?
The bias score, which is also known as the mean squared error, is a measure of the difference between the predicted values and the actual values.
A bias score of 0.8 means that, on average, the model's predictions are off by 0.8. This could indicate that the model is biased, but it is difficult to say without more context. There are many factors that can contribute to a model being biased, including the quality of the training data and the complexity of the model. It is important to carefully evaluate the bias score and other performance metrics when assessing the effectiveness of a model.
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PLEASE THIS IS URGENT
If you round a divisor down, is the quotient going to be less than or greater than the actual quotient? Explain.
π = 3.142 and r = 3cm. find the volume of the sphere
Answer:
113.112 cm³
Step-by-step explanation:
Volume (sphere) = 4/3πr³
= 4/3 x 3.142 x 27
= 36 x 3.142
= 113.112 cm³
Use the drawing tool(s) to form the correct answer on the provided number line. Will brought a 144-ounce cooler filled with water to soccer practice. He used 16 ounces from the cooler to fill his water bottle. He then took out 16 plastic cups for his teammates and put the same amount of water in each cup. Find and graph the number of ounces of water, x, that Will could have put in each cup.
According to the information, we can infer that the number of ounces of water, x, that Will could have put in each cup is 8 ounces.
What is the number of ounces of water "x" that Will could have put in each cup?Will initially had a cooler filled with 144 ounces of water. After using 16 ounces to fill his water bottle, there were 144 - 16 = 128 ounces of water remaining in the cooler.
Will then took out 16 plastic cups for his teammates. Since the same amount of water was put in each cup, the remaining amount of water, 128 ounces, needs to be divided equally among the cups.
Dividing 128 ounces by 16 cups gives us 8 ounces of water for each cup.
So, Will could have put 8 ounces of water in each cup.
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True or False: For a given mass of rising air, the dry adiabatic rate will always be higher than the wet adiabatic rate.
Answer:
true
Step-by-step explanation:
because there's less humidity
Pls help! (don't give wrong answer pls)
Decide whether the sequence is Arithmetic, Geometric or Neither.
4, 9, 16, 25, ...
Check arithmetic
t4-t3 t3-t2
25-16 16-9
=9 =7
sequence is not arithmetic bcoz t4-t3 is unequal to t4-t3
check geometric
t4÷t3 t3÷t2
25÷16 16÷9
=1.6 1.7
sequence is not geometric bcoz t4÷t3 is unequal to t3÷t2
neither
By using the start codon AUG as a guidepost, researchers can determine whether substitutions in pseudogenes correspond to silent changes or replacement changes. In contrast to most other loci, the rate of silent and replacement changes is identical in pseudogenes. Explain this observation in light of the neutral theory of evolution.
The identical rates of silent and replacement changes in pseudogenes support the neutral theory of evolution. Pseudogenes, being non-functional and not subject to selective constraints.
The observation that the rate of silent and replacement changes is identical in pseudogenes, as determined by the start codon ,explained in the light of the neutral theory of evolution proposed by . According to the neutral theory, most genetic variation that accumulates over time is due to random genetic drift rather than natural selection.
In pseudogenes, the mutations that occur are generally selectively neutral, meaning they do not confer any advantage or disadvantage to the organism. Pseudogenes are non-functional copies of genes that have lost their protein-coding ability due to various mutations, such as insertions, deletions, or premature stop codons. Since pseudogenes are not under functional constraints, mutations in these regions are generally not subject to purifying selection, which eliminates deleterious changes.
The rate of silent changes (synonymous substitutions) refers to nucleotide changes that do not alter the amino acid sequence of the protein encoded by a gene. These changes occur in the third position of the codon, where the genetic code is degenerate, allowing multiple codons to encode the same amino acid. Silent changes are often considered selectively neutral because they do not affect the phenotype of the organism.
The rate of replacement changes (non-synonymous substitutions), on the other hand, refers to nucleotide changes that result in a different amino acid being incorporated into the protein sequence. These changes can potentially affect the structure and function of the protein and may be subject to selective pressure.
In pseudogenes, both silent and replacement changes occur at a similar rate because the majority of mutations in pseudogenes are selectively neutral. Since pseudogenes are non-functional, there is no selection pressure to maintain the protein-coding sequence.
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Help me please, I’m not sure how to answer
The date when Dylan will first have over 3,600 Euros in his account is given as follows:
24/11/34.
What is compound interest?The balance, in compound interest, after t years, is given by the equation presented as follows:
\(A(t) = P\left(1 + \frac{r}{n}\right)^{nt}\)
In which the parameters are given as follows:
P is the principal, which is the value of deposit/loan/....r is the interest rate, as a decimal value.n is the number of times that interest is compounded per year, annually n = 1, semi-annually n = 2, quarterly n = 4, monthly n = 12.In the context of this problem, the values of these parameters are given as follows:
P = 3000, r = 0.0102, n = 4.
Hence the equation is given as follows:
\(A(t) = 3000\left(1 + \frac{0.0102}{4}\right)^{4t}\)
\(A(t) = 3000(1.00255)^{4t}\)
Dylan will first have over 3,600 Euros in his account after a period of t years found as follows:
\(3600 = 3000(1.00255)^{4t}\)
\((1.00255)^{4t} = \frac{3600}{3000}\)
\((1.00255)^{4t} = 1.2\)
\(\log{(1.00255)^{4t}} = \log{1.2}\)
4tlog(1.00255) = log(1.2)
t = log(1.2)/[4 x log(1.00255)]
t = 17.9 years.
17.9 years after January 1st, 2017 is 17 years and 0.9 x 12 = 10.8 months after January 1st 2017, hence 17 years, 10 months and 0.8 x 30 = 24 days, hence the data is of:
November 24th, 2034. written as:
24/11/34.
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Find an
an equation for the perpendicular bisector of the line segment whose
endpoints are (–4,3) and (−8,—3).
Answer:
y = (-2/3)x + 4
Step-by-step explanation:
How do I solve this? 18= -1 over 2k
Answer:
-1/36
Step-by-step explanation:
18=-1/(2k)
2k=-1/18
k=(-1/18)/2
k=(-1/18)(1/2)
k=-1/36
Don’t you guys just hate when you ask a question on here and two different people have different answers???
Answer:
Yes, very. This has happen to me so many times. I hate it
Have a nice day <3
^_^
13÷1766
I dont know
In one-way ANOVA, involving three groups, the alternative hypothesis would be considered correct if, in the population,a.all means were equalb.two means are equal but the third is differentc.all three means have different valuesd.either (b) or (c) above is true
There are at least two group means that are significantly different from one another, according to the alternative hypothesis (H a). The alternative hypothesis is adopted if the outcome is statistically significant.
What is anova test?You can use ANOVA to determine whether differences between data sets are statistically significant. It functions by examining the levels of variance present within each group using samples drawn from each.
The likelihood that the mean of a sample taken from the data will be different owing to chance increases if there is a lot of variance (spread of data away from the mean) among the data groups.
In addition to examining the variance within the data groups, ANOVA also considers sample size (the smaller the sample, the lower the likelihood that outliers will be randomly selected from it) and sample mean differences (the greater the difference between the sample means, the greater the likelihood that an outlier will be randomly selected from it).
hence, The alternative hypothesis is adopted if the outcome is statistically significant.
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How would you classify the number 196?
A) Perfect square B) Perfect cube C) Both a perfect square and a perfect cub D) Neither a perfect square and a perfect cub
- The slope of the line below is į and
the y intercept is 4. What is the slope-
intercept equation of the line?
Answer:
y=jx+4
Step-by-step explanation:
The equtaion for slope intercept is y=mx+b. We know that the m is slope and for our problem, the slope is j. The x is always added to the equation. Also the b is the y intercept. For this problem, the y intercept is 4.
NEED HELP ASAP
what is the mode of the data
(A) 3
(B) no mode
(C) 17
(D) 40
QUESTION #2
what is the mean of the data
(A) 17
(B) 19.5
(C) 22
(D) 19
use the picture for both of these questions
Please help me I am having a hard time with this activity
Answer:
Step-by-step explanation:
b.
\(\frac{a^2+6a+9}{a^2-9} *\frac{3a-9}{a+3} \\=\frac{a^2+2*a*3+3^2}{a^2-3^2} *\frac{3(a-3)}{a+3} \\=\frac{(a+3)^2}{(a+3)(a-3)} *\frac{3(a-3)}{a+3} \\=\frac{3(a+3)^2}{(a+3)^2} \\=3\)
d.
\(\frac{3x^2-6x}{3x+1} *\frac{x+3x^2}{x^2-4x+4} \\=\frac{3x(x-2)}{3x+1} *\frac{x(1+3x)}{x^2-2x-2x+4} \\=\frac{3x(x-2)}{3x+1} *\frac{x(1+3x)}{x(x-2)-2(x-2)} \\=\frac{3x(x-2)}{3x+1} *\frac{x(1+3x)}{(x-2)(x-2) } \\=\frac{3x^2}{x-2)}\)
e.
\(\frac{2x^2-10x+12}{x^2-4} *\frac{2+x}{3-x} \\=\frac{2[x^2-5x+6]}{x^2-2^2} *\frac{2+x}{-(-3+x)} \\=\frac{2[x^2-2x-3x+6]}{(x+2)(x-2)} *\frac{x+2}{-(x-3)} \\=\frac{2[x(x-2)-3(x-2)]}{(x+2)(x-2)} *\frac{x+2}{-(x-3)} \\=\frac{2(x-2)(x-3)}{(x+2)(x-2)} *\frac{x+2}{-(x-3)} \\=\frac{2}{-1} \\=-2\)
k.
\(\frac{6x^2-11x-10}{6x^2-5x-6} *\frac{6-4x}{25-20x+4x^2} \\=\frac{6x^2-15x+4x-10}{6x^2-9x+4x-6} *\frac{-4x+6}{4x^2-10x-10x+25} \\=\frac{3x(2x-5)+2(2x-5)}{3x(2x-3)+2(2x-3) } *\frac{-2(2x-3)}{2x(2x-5)-5(2x-5)} \\=\frac{(2x-5)(3x+2)}{(2x-3)(3x+2)} *\frac{-2(2x-3)}{(2x-5)(2x-5)} \\=\frac{-2}{2x-5}\)
How to round a mixed number to the nearest half
Which expression is equivalent to (5x^3)^2
Answer:
25x^6
Step-by-step explanation:
:)
Mr. Mike dropped a 5Kg metal ball and and a 1Kg regular basket ball from 6m height. This demonstration conducted in a perfect Vacuum container, where the gravity equal to ZERO (g = 0 m/s^2) ?
HELP ASAP
a.5 Kg metal ball
b.1 Kg regular basket ball
c.both will reach at the same time.
d.none of the above
Answer:
ist c both will reach at the same time.
Answer:
the answer is c I think don't know if I helped
Mary, Katherine, and Alex share the bill at a restaurant after a meal. Mary pays for of the bill, Katherine pays for of the bill, and Alex
pays for the rest. What is the ratio of Mary's share to Katherine's share to Alex's share?
The ratio of Mary's share to Katherine's share to Alex's share is 5:4:1, which means Mary pays 5/10 of the bill, Katherine pays 4/10 of the bill, and Alex pays 1/10 of the bill.
To find the ratio, we can write their contribution as a fraction of the total parts and then solve the fractions then they'll have the same denominator.
So, Mary's share is 5/10, Katherine's share is 4/10, and Alex's share is 1/10.
To convert this as a ratio, we write 5:4:1, where each number represents the number of parts each person pays, and the colon separates each person's contribution.
Therefore, the ratio of Mary's share to Katherine's share to Alex's share is 5:4:1
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2021 You have an SRS of six observations from a Normally distributed population. What critical value would you use to obtain an 80% confidence interval for the mean ? of the population? (a) 1.440 (b) 1.476 (c) 2.015
The answer to the question is (a) 1.440.The critical value that would be used to obtain an 80% confidence interval for the mean of a Normally distributed population, given an SRS of six observations, would be 1.440.
To calculate the critical value for an 80% confidence interval, we need to use the t-distribution. The t-distribution is used when the sample size is small (less than 30) or when the population standard deviation is unknown. For an 80% confidence interval with 5 degrees of freedom (6-1=5), the critical value is 1.440, according to the t-distribution table. This means that if we take multiple samples of the same size from the same population and construct 80% confidence intervals for each sample, approximately 80% of the intervals would contain the true population mean.
To obtain the critical value for an 80% confidence interval for the mean of a Normally distributed population, given an SRS of six observations, we need to use the t-distribution. The t-distribution is used when the sample size is small (less than 30) or when the population standard deviation is unknown. To determine the critical value, we first need to calculate the degrees of freedom, which is the sample size minus one. In this case, the degrees of freedom would be 5 (6-1=5). We then need to look up the corresponding t-value from the t-distribution table for an 80% confidence level and 5 degrees of freedom. Using the t-distribution table, we can find that the critical value for an 80% confidence interval with 5 degrees of freedom is 1.440.
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please please help i’ll give brainliest tysm :)
Answer:
It's the top answer or A.
Step-by-step explanation:
Because if you have 6 avocados for 7.50 just divide without including the decimal point. 750 divided by 6 is 125
include the decimal point in between 1 and 2
boom 1.25
now i know you multiply the variables with the equation but i dont exactly know if im doing this right.
Answer:
= -48
Step-by-step explanation:
3x^3 - 8y^2
3 ( 2 )^3 - 8 ( -3 )^2
first you solve the exponents
3 ( 8 ) - 8 ( 9 )
multiply
24 - 72
subtract
= - 48
hope this helps
One of the tallest ferris wheels in the world is in las vegas. It has a diameter, , of 520 feet. The circumference of the ferris wheel represents the distance traveled by a passenger after one full rotation. The circumference can be determined using the expression. What is the distance traveled, in feet, by passengers on each rotation of the ferris wheel? record your answer to the nearest tenth of a foot.
Answer:
Below
Step-by-step explanation:
Circumference of a circle = pi * diameter
circumference of ferris wheel = 3.14159 * 520=1633.6 ft