A teacher keeps track of the number of students that participate at least three times in an optional study session each year. He models the attendance over the last nine years with this function.
n(t) = 3.53t^2 - 33.04t + 117.56
Which graph would most likely be associated with the given model?
Regression equations can be linear, quadratic or exponential
The graph that would most likely be associated with the given model is (b)
The regression equation is given as:
[tex]n(t) = 3.53t^2 - 33.04t + 117.56[/tex]
The above regression equation is a quadratic function (and non-linear).
So, the graph must represent a non-linear relationship.
From the given graphs, only graph (b) represents a quadratic function.
Other options are either linear models or exponential.
Hence, the graph that would most likely be associated with the given model is (b)
Read more about regression models at:
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Answer:
Its B
Step-by-step explanation:
PLEASE HELP 40 POINTS!!! For what value of x is line a parallel to line b?
Enter your answer in the box.
x =
Answer: 22
Step-by-step explanation:
Answer:
22
Step-by-step explanation:
Don't worry, don't worry child. Oh, geometry. How lucky are you: finally knowing this treasury of humanity. I'm jealous now. Haha.
In the annex, you can see what is happening :)
Look that, if a and b are paralels, 4x + 28 is External Alternate of the Opposite Vertex of 116, which is also 116. Then, they have the same value: 4x + 28 = 116.
If you don't remember those concepts, review the initial part of geometry. The proof of that is quite simply, moreover is easy to mentally deduce that.
What is an equation of a line with slope −2/3 and a y-intercept of −4?
Which of the following steps would you use to
evaluate (a + b)??
Answer:
(a+b)(a+b)
Step-by-step explanation:
A lady decides she wants to start saving more money so she can buy a house. So, she decides to trick herself into saving by creating a challenge for herself. She bought a box of 100 envelopes and wrote the numbers 1-100 on separate envelopes. Twice a week, she drew two envelopes at random and put the corresponding amount of cash inside. (So, if she drew envelope 23, she put $23 inside). How much will she save? How long will it take her to fill all the envelopes?
Answer:
she should at least have $1,150 in at least 575 weeks
Step-by-step explanation:
Which equation represents a line that has a slope of One-third and passes through point (–2, 1)?
Answer:
y=1/3x+5/3
Step-by-step explanation:
y=1/3x+b
1=1/3(-2)+b (plug in ya points)
1=-2/3+b
5/3=b
y=1/3x+5/3
Answer:
the answer is y=1/3x+5/3
Step-by-step explanation:
hope this helps
did it on edge
Find the midpoint of the segment with the endpoints: (-2, 6) and (-3, 7)
Answer:
The midpoint is ( -2.5, 6.5)
Step-by-step explanation:
To find the x coordinate of the midpoint, add the x coordinates of the endpoints and divide by 2
(-2+-3)/2 = -5/2 = -2.5
To find the y coordinate of the midpoint, add the y coordinates of the endpoints and divide by 2
(6+7)/2 = 13/2 = 6.5
The midpoint is ( -2.5, 6.5)
PLSSSSS HELPOLP URGENT!!!!
What are the coordinates of the endpoints of P'Q' after a reflection of PQ
over x = -3?
What is 74 divided by 12?plz help I need this assignment done before 3:30 and it’s 2 hours until time
Answer:
6.16.
Step-by-step explanation:
hope this helps.
Answer:
37/6
Step-by-step explanation:
For adults who sailed on the Titanic on its fateful voyage, the odds ratio20 between gender (female, male) and survival (yes, no) was 11.4. a. What is wrong with the interpretation, "The probability of survival for females was 11.4 times that for males?" Give the correct interpretation. b. The odds of survival for females equaled 2.9. For each gender, find the proportion who survived. Find the value of RR in the interpretation, "The probability of survival for females was RR times that for males."
what is the square root of 27000
Answer:
164.316767252
Step-by-step explanation:
Answer:
164
Step-by-step explanation:
What is | -8|
—16
-8
8
16
Answer:
8
Step-by-step explanation:
scince it has the lines that mean that it will always be positive.
Answer:
8
Step-by-step explanation:
Have a nice day!
help find the value of x
Answer:
40
Step-by-step explanation:
The sales in thousands of dollars that Terrific Toys makes during one month can be approximated by the functions S(x)=2x³-2x²+4x, where x represents the number of days after the first day of the month. About how many days will it take the store to make $50,000?
Answer:
The days will it take the store to make $50,000 in a whole number are:
30 days.Step-by-step explanation:
Remember that x represents the number of days, so, you must replace different values in the formula until you obtain a value of $50,000, in this form:
S(x)= 2x³-2x²+4xS(1)= 2*1³-2*1²+4*1S(1)= 4 ($4).So, I'll show you that the value that you need is 30 in a whole number.
S(30)= 2*30³-2*30²+4*30S(30)= 52,320 ($52,320)I know that the value exceeds the amount of $50,000, but if you use just a day before:
S(29)= 2*29³-2*29²+4*29S(29)= 47,212 ($47,212)How you can see, if you use 29 days, the value doesn't reach $50,000, by this reason, you must use 30 days to reach it.
what is the greatest common facter of 48 and 84
Answer:12
Step-by-step explanation:
The prime factorization of 84 is 2×2×3×7 . The prime factorization of 48 is 2×2×2×2×3 . . Therefore, the GCF is 2×2×3=12
Laina reads 25 : 30
If laine reads 200 pages at the same rate how long will it take her
Answer:
i sorry but idk the annswer
Answer:
240
Step-by-step explanation:
200/25=8
30x8=240
hope this helps i didn't really understand the question much
There are 3 students in the class and 27 apples. If the apples are divided equally among the students, how many does each student get?
Answer:
9 apples.
Step-by-step explanation:
27/3=9
The number of trout in America since 2000 is given by the following formula:
[tex]y=x^2+3x+2[/tex]
"x" is the number of years and "y" is the number of trout in the millions.
Based on this formula, estimate the number of trout in the years 2005, 2010, and 2015.
Describe the trend in the number of trout as the years increase.
Answer:
See below
Step-by-step explanation:
Given formula
y = x² + 3x + 2x- is the number of years after 2000,y - is the number of troutYear 2005, finding number of trout
x = (2005 - 2000) = 5y = 5² + 3*5 + 2 = 42 millionsYear 2010, finding number of trout
x = (2010 - 2000) = 10y = 10² + 3*10 + 2 = 132 millionsYear 2015, finding number of trout
x = (2015 - 2000) = 15y = 15² + 3*15 + 2 = 272 millionsNumber of trout is trending up with significant increase over yeas
Answer:
42 million132 million272 millionThe number of trout inceases a lot each 5 years that pass.Step-by-step explanation:
Number of trout in 2005.
Find the number of years apart from 2000 to 2005.
2005 - 2000 = 5
Substitute for x and solve for y.
y = x² + 3x + 2
y = (5)² + 3(5) + 2
y = 25 + 15 + 2
y = 40 + 2
y = 42 million
Number of trout in 2010.
Find the number of years apart from 2000 to 2010.
2010 - 2000 = 10
Substitute for x and solve for y.
y = x² + 3x + 2
y = (10)² + 3(10) + 2
y = 100 + 30 + 2
y = 130 + 2
y = 132 million
Number if trout in 2015.
Find the number of years apart from 2000 to 2015.
2015 - 2000 = 15
Substitute for x and solve for y.
y = x² + 3x + 2
y = (15)² + 3(15) + 2
y = 225 + 45 + 2
y = 270 + 2
y = 272 million
Best of Luck!
Which expression is equivalent to (cd)5
Answer:
A
Step-by-step explanation:
Drag the divisor fraction to the dividend bar to see how many
parts of the divisor are in the dividend
Use fraction bars and the rules of dividing signed
numbers to divide
15
Dividend
15 3
5 5
o
18
cila
o
Divisor
o
12
O -5
Answer:
Is B
Step-by-step explanation:
The dividend is 2 and the divisor is 2/5
What is Division?A division is a process of splitting a specific amount into equal parts.
The given fraction is 2 ÷ 2/5
The number which is getting divided here is called the dividend.
The number which divides a given number is the divisor.
In the given division the dividend is 2
The divisor is 2/5
Hence, the dividend is 2 and the divisor is 2/5
To learn more on Division click:
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Geometry The sides of a yield sign all have the same
length (see figure). The perimeter of a roadway yield
sign is 225 centimeters. Find the length of each side.
YIELD
Figure for 51
Figure for 52
Answer:
75 cm
Step-by-step explanation:
Given:
Perimeter of the triangular yield sign = 225 cm
Side lengths = x, x and x
Required:
Length of each side
SOLUTION:
Perimeter of the triangular yield sign = sum of all sides of the triangular yield sign
225 cm = x + x + x
Solve for x
225 = 3x
Divide both sides by 3
225/3 = 3x/3
75 = x
x = 75
The length big each side is 75 cm
how do i solve for m in i=pm
Answer:
Divide by P
Step-by-step explanation:
i = P x M
divide by P to get M alone, which means you have to do it to both sides
i/P = M
Which expression can be modeled using the number line?
I NEED THIS ASAP
A number line going from 0 to 1 in increments of StartFraction 1 Over 10 EndFraction. Arrows go between each increment until StartFraction 7 Over 10 EndFraction.
StartFraction 1 Over 10 EndFraction divided by 7
StartFraction 7 Over 10 EndFraction divided by StartFraction 1 Over 10 EndFraction
StartFraction 1 Over 10 EndFraction divided by StartFraction 7 Over 10 EndFraction
7 divided by StartFraction 7 Over 10 EndFraction
Answer:
c is incorrect they just made me fail my quiz... :(
Step-by-step explanation:
Answer:
7/10 divided by 1/10
Step-by-step explanation:
What is the solution to this equation?
3(4x + 3) = 2x - 5(3 - x) + 2
A.
o o
O
-
O
D.
-
Answer:
-0.86
Step-by-step explanation:
12x + 9 = 2x - 15 + 5x + 2
Combine
19x = -22
PLEASE HELP!!! ILL GIVE BRAINLIEST THIS IS WORTH 20 POINTS PLEASE (ignore where it says 8 &2 points it’s how much the question adds up to in the grade book)
Answer:
x= -3 is the answer
UW=3 is the answer..
hope it helps you mate
please mark me as brainliast
Answer:
From the given figure, we can see that the 2 given line segments are equal in length
Hence,
11 + (x - 5) = 2x - 4
6 + 4 = x
x = 10
Now that we know the value of x, we can use it to get the length of the line segment UW
UW = 11 + (x - 5)
UW = 11 + (10 - 5)
UW = 11 + 5
UW = 16 units
You are certain to get 2 Kings when selecting 50 cards from a shuffled deck. express the indicated degree of likelihood as a probability value between zero and one inclusive
Answer:
1
Step-by-step explanation:
The probability of this happening would be a 1 when placing a value between zero and one inclusive. One in this case would indicate a 100% probability. This is the case because in the question it is stated that it is "certain" that you will get 2 kings when selecting 50 cards, this means that no matter what it will happen every time 50 cards are drawn, thus making the probability 100%. If the question were phrased differently such as "what is the probability of getting 2 kings from 50 cards drawn?" then the probability would be 0.04 or 4% which is 2/50.
Using probability concepts, it is found that the likelihood is of 1.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
A few observations regarding probabilities are important.
It assumes values between 0% and 100% as percentages and between 0 and 1 as decimals.If an event is certain not to happen, the probability is of 0% = 0.If an event is certain to happen, the probability is of 100% = 1.In this problem, you are certain to get 2 Kings when selecting 50 cards from a shuffled deck, hence the likelihood is of 1.
You can learn more about probabilities at https://brainly.com/question/15536019
21 students went on an exchange program to hong kong. There were 11 more women than men. How many woman are there?
Answer:
11
Step-by-step explanation:
11 + 10 = 21
3)
Blair expects an increase of 3% in her current annual
salary of $42,000. What would her new annual salary
be?
Answer:
$43,260
Step-by-step explanation:
You have the 3% annual income, which you can convert to a decimal. This gives:
42000 * 1.03
42000 represents Blair's initial income, and 0.03 represents the 3% increase.
I chose 1.03 because I don't have to subtract 97% and add it to 42000.
Maggie purchased a 2-pound roast to fix for dinner. How many ounces does the roast weigh?
Answer:
32 ounces
Step-by-step explanation:
1 lb = 16 ounces
2 lbs = 2 * 16 = 32 ounces
The third term of an A.P is 4m - 2n. If the ninth term of the progression is 2m - 8n. Find the common difference in terms of m and n
Let [tex]a_n[/tex] denote the n-th term in the progression. So
[tex]a_n=a_{n-1}+d[/tex]
for some constant difference between terms d.
Solve for [tex]a_n[/tex] explicitly:
[tex]a_4=a_3+d[/tex]
[tex]a_5=a_4+d=a_3+2d[/tex]
[tex]a_6=a_5+d=a_3+3d[/tex]
and so on, up to
[tex]a_n=a_3+(n-3)d[/tex]
We're told that the third term is [tex]a_3=4m-2n[/tex], and the ninth term is [tex]a_9=2m-8n[/tex], and according to the recursive rule above, we have
[tex]a_9=a_3+6d[/tex]
Solve for d :
[tex]2m-8n=(4m-2n)+6d[/tex]
[tex]-2m-6n=6d[/tex]
[tex]d=-\dfrac{2m+6n}6=\boxed{-\dfrac{m+3n}3}[/tex]