The scatter plot shows the maximum noise level when different numbers of people are in a stadium. The linear model is given by the equation y=1.5x + 22.7 where y represents maximum noise level and x represents the number of people, in thousands, in the stadium.
1. The slope of the linear model is 1.5. What does this mean in terms of the maximum noise level and the number of people?
2. A sports announcer states that there are 65,000 fans in the stadium. Estimate the maximum noise level. Is this estimate reasonable? Explain your reasoning.
3. What is the -intercept of the linear model given? What does it mean in the context of the problem? Is this reasonable? Explain your reasoning.
Answers
Answer:
The y intercept is 1.5x+22.7 + the linear equation which is 22
Step-by-step explanation:
Answer:
Step-by-step explanation:
Related Questions
find the area of the figure
A) 450MM
B) 67,500 MM
C) 600MM
D)150MM
Answers
Answer:
30x15= 450
15+15=30
1/2 x 30 x 10 = 150
450+150=600
Step-by-step explanation:
Please help me, smart people
sincerely,
-not smart person
Answers
A figure is reflected in the x-axis. How will the coordinates change?
A. The x-coordinates will stay the same.
B The x-coordinates will change sign.
C The y-coordinates will stay the same.
D The y-coordinates will change sign.
Answers
Answer: The y-coodinates will change sign.
Step-by-step explanation: This is because it is being flipped over the x line. If you have the coordinate (2,3) then when you flip it you will end up with (2,-3)
is this expression fully simplified? Explain
4x2 + 10 - x - 6x3
Answers
Answer:
-x
Step-by-step explanation:
Need help ASAP BRAINLIEST IF CORRECT
9x - 4 = (16x + 4)/2. Find x.
.......................................................................................................................................
Answers
Answer:
X=6
Step-by-step explanation:
Answer: x=6
Step-by-step explanation: Solve for x by simplifying both sides of the equation, then isolate your variable.
I hope this helps.
First right equals brainliest, Pls dont answer for the points this is serious. I just need this and 3 more which I will ask later. Anyway I am making this worth more points because I need help:)
Answers
I can't see the picture, can you please explain the problem in the comment bar below this so can edit my answer to help?
Utilize the virtual die roller to conduct an experiment of how many actual times you will roll a "3" if you roll the die 72 times.
https://flipsimu.com/dice-roller/#
Answers
Answer:
15 times-
Step-by-step explanation:
How do you find the equation of each function? Function A is f(x)=3x^2 and Function C is f(x)=18x-16. How do you get those? And then how do you get the equation for Function B? Thanks!
Answers
Answer:
[tex]f(x) = 3^x[/tex] --- Function A
[tex]f(x) = x^2 - 5[/tex] --- Function B
[tex]f(x) = 18x -6[/tex] --- Function C
Step-by-step explanation:
Solving (a): Equation of Function A
An exponential equation is represented as:
[tex]y = ab^x[/tex]
From the graph of function A,
[tex]x = 0\ when\ y = 1[/tex]
[tex]x = 1\ when\ y = 3[/tex]
For: [tex]x = 0\ when\ y = 1[/tex]
[tex]y = ab^x[/tex] becomes
[tex]1 = ab^0[/tex]
[tex]1 = a[/tex]
[tex]a =1[/tex]
For: [tex]x = 1\ when\ y = 3[/tex]
[tex]y = ab^x[/tex] becomes
[tex]3 = a*b^1[/tex]
[tex]3 = a*b[/tex]
Substitute 1 for a
[tex]3 = 1*b[/tex]
[tex]3 = b[/tex]
[tex]b = 3[/tex]
[tex]y = ab^x[/tex] becomes
[tex]y = 1*3^x[/tex]
[tex]y = 3^x[/tex]
Replace y with f(x)
[tex]f(x) = 3^x[/tex]
Solving (b): Equation of Function B
A quadratic equation is represented as:
[tex]y = ax^2 + bx + c[/tex]
From the table of function B,
[tex]x = 3\ when\ y =4[/tex]
[tex]x = 5\ when\ y =20[/tex]
[tex]x = 6\ when\ y =31[/tex]
For: [tex]x = 3\ when\ y =4[/tex]
[tex]y = ax^2 + bx + c[/tex] becomes
[tex]4 = a*3^2 + b*3 + c[/tex]
[tex]4 = a*9 + 3b + c[/tex]
[tex]4 = 9a + 3b + c[/tex]
For [tex]x = 5\ when\ y =20[/tex]
[tex]y = ax^2 + bx + c[/tex] becomes
[tex]20 = a*5^2 + b*5 + c[/tex]
[tex]20 = a*25 + b*5 + c[/tex]
[tex]20 = 25a + 5b + c[/tex]
For [tex]x = 6\ when\ y =31[/tex]
[tex]y = ax^2 + bx + c[/tex] becomes
[tex]31 = a*6^2 + b*6 + c[/tex]
[tex]31 = a*36 + b*6 + c[/tex]
[tex]31 = 36a + 6b + c[/tex]
So, we solve for a, b and c in:
[tex]4 = 9a + 3b + c[/tex]
[tex]20 = 25a + 5b + c[/tex]
[tex]31 = 36a + 6b + c[/tex]
Make c the subject in [tex]4 = 9a + 3b + c[/tex]
[tex]c = 4 - 9a - 3b[/tex]
Substitute [tex]c = 4 - 9a - 3b[/tex] in [tex]20 = 25a + 5b + c[/tex] and [tex]31 = 36a + 6b + c[/tex]
[tex]20 = 25a + 5b + c[/tex] becomes
[tex]20 = 25a + 5b + 4-9a-3b[/tex]
Collect Like Terms
[tex]-4+20 = 25a -9a+ 5b -3b[/tex]
[tex]16 = 16a+ 2b[/tex]
Divide through by 2
[tex]8 = 8a + b[/tex]
[tex]c = 4 - 9a - 3b[/tex]
[tex]31 = 36a + 6b + c[/tex] becomes
[tex]31 = 36a + 6b + 4 - 9a - 3b[/tex]
Collect Like Terms
[tex]-4+31 = 36a - 9a+ 6b - 3b[/tex]
[tex]27 = 27a+ 3b[/tex]
Divide through by 3
[tex]9 = 9a + b[/tex]
Solve for a and b in: [tex]8 = 8a + b[/tex] and [tex]9 = 9a + b[/tex]
Subtract both equations:
[tex]8 - 9 = 8a - 9a + b - b[/tex]
[tex]8 - 9 = 8a - 9a[/tex]
[tex]-1 = -a[/tex]
Divide both sides by -1
[tex]1 = a[/tex]
[tex]a = 1[/tex]
Substitute 1 for a in [tex]9 = 9a + b[/tex]
[tex]9 = 9*1 + b[/tex]
[tex]9 = 9 +b[/tex]
Subtract 9 from both sides
[tex]9-9=9-9+b[/tex]
[tex]0=b[/tex]
[tex]b = 0[/tex]
Substitute [tex]b = 0[/tex] and [tex]a = 1[/tex] in [tex]c = 4 - 9a - 3b[/tex]
[tex]c = 4 - 9*1-3*0[/tex]
[tex]c = 4 - 9-0[/tex]
[tex]c = -5[/tex]
So, the equation is:
[tex]y = ax^2 + bx + c[/tex]
[tex]y=1*x^2 +0*x-5[/tex]
[tex]y=x^2 -5[/tex]
Replace y with f(x)
[tex]f(x) = x^2 - 5[/tex]
Solving (c): Equation of Function C
This is calculated using:
[tex]f(x) =a + (x -1)d[/tex]
Where
[tex]a = 12[/tex] -- the first term
d = the difference between successive terms
[tex]d = 30 -12 = 48-30 = 66 -48[/tex]
[tex]d =18[/tex]
So, we have:
[tex]f(x) =a + (x -1)d[/tex]
[tex]f(x) = 12 + (x - 1)*18[/tex]
Open bracket
[tex]f(x) = 12 + 18x - 18[/tex]
Collect Like Terms
[tex]f(x) = 18x - 18+12[/tex]
[tex]f(x) = 18x -6[/tex]
A store buys a jacket for $60. The markup rate is $15. What is the percent of markup?
Answers
Answer:I think it’s 33.33%? Not 100% sure but I hope it helps!
Step-by-step explanation:
SOLVE THE EQUATION!!!!!!!!
Answers
Answer:
c = 2.6 = [tex]\frac{13}{5}[/tex] = 2 [tex]\frac{3}{5}[/tex]
Step-by-step explanation:
d = 0.26 = [tex]\frac{13}{50}[/tex]
Hope this helps
Cassie has $400 in her account. On average, she deposits $8 into her account every day, for m days. Write an expression to determine how much money will be in her account after m days.
Answers
Answer:
400 + 8m
Step-by-step explanation:
Starts with $400 in her account. Every day (we'll use the variable m for the number of days), she deposits $8.
400 + 8m
If you were to be asked how much money she has in her bank account after 10 days, you plug in 10 for m. Same for any other number of days.
explanation : 400 in her account, 8 every day for (m) days
Find the area of the polygon, the vertices are (1,4) (2,1) (4,1) (5,4)
Answers
Answer:
Hello
Step-by-step explanation:
To make popcorn, a movie theater uses 6 tablespoons of oil for each cup of popcorn kernels.
Answers
Answer:
1. 18
2. 36
3. Not sure, but I think 7
halp me plez I dont wanna fail ( MUST BE A EXPRESSION)
Answers
Answer:
2x+15=33
Step-by-step explanation:
Let n be the number of days he has been doing sit ups, not counting the first day. Since he does 2 more sit-ups for each day, then the number of additional sit-ups is 2n.
Since he started doing 15 sit-ups on the first day, the total number of sit-ups
after x days would be 2n+15.
Since he did a total of 33 sit ups today, then 2n+15=33
I know what the equation for these problem is and what x is but what is < measures? Are these measures the same? I could have asked the teacher but what if she think that I am annoying.
Answers
Answer:
"x" is the actual value of x, <measures is the measures of the angles itselfs. so insert x into the expression to find the angle measure.
Step-by-step explanation:
Answer:
90 degree
Step-by-step explanation:
total angle is the sum of x-18 and x
since the figure is forming right angle so angle is 90 degree
90=x-18 +x
x=54
Four students set up a lemonade stand. At the end of the day, their profit is $17.52. How much money do they each have when the profit is split equally?
Answers
Answer:
$6
Step-by-step explanation:
pls answer quick rjwejriwejriwekr
Answers
Answer: $181.48 O_O
Step-by-step explanation: i know that stuff
Answer:
$530.48
Step-by-step explanation:
i can answer now yay
The Empire State Building is just over 1,450 feet tall. In anticipation of visiting this
landmark on your vacation, you create a model of it using blocks.
a) Suppose you are making a model where one block represents 2 feet. About how
many blocks tall is your model of the Empire State Building? What is the scale
factor? (2 points)
b) Suppose you are making a model where one block represents 5 feet. About how
many blocks tall is your model of the Empire State Building? What is the scale
factor? (2 points)
c) Look at the scale factor from parts a and b. Do they represent a reduction or an enlargement of the Empire State Building? How do you know? (2 points)
d) Use your knowledge of scale drawings and image sizes to fill in the missing
information in the table. (3 points)
Answers
B) your model would be 290 blocks tall because 1,450/5=290.
C)reduction of the Empire State Building because you are building a model that takes blocks representative of a larger unit than what it signifies
D)don’t have the table to fill in
Model requiring 525 block and 290 blocks
What is scale factor ?Scale Factor is used to scale shapes in different dimensions. In geometry, we learn about different geometrical shapes which both in two-dimension and three-dimension. The scale factor is a measure for similar figures, who look the same but have different scales or measures. Suppose, two circle looks similar but they could have varying radii.
a) You have two given data available here: the actual height of the Empire State Building measuring 1,450 feet, and the height of the block measuring 2 feet. To find how many blocks stacked together would make up 1,450 feet, just divide 1,450 by 2.
Number of blocks=1,450 feet * (1 block/2 feet)
Number of blocks = 725 blocks
Therefore, you would use a model requiring 725 blocks.
The scale factor for the model is 1 block per two feet.
b) You have two given data available here: the actual height of the Empire State Building measuring 1,450 feet, and the height of the block measuring 5 feet. To find how many blocks stacked together would make up 1,450 feet, just divide 1,450 by 5.
Number of blocks=1,450 feet * (1 block/5 feet)
Number of blocks = 290 blocks
Therefore, you would use a model requiring 290 blocks.
The scale factor for the model is 1 block per five feet.
To learn more about the scale factor here:
https://brainly.com/question/15555657
#SPJ3
HELP The figure below has a point marked with a large dot. First, reflect the figure across the y-axis. Then, give the coordinates of the marked point in the original figure and the final figure.
Answers
Answer: points in original figure (-6, 2)
Points in final figure (6, 2)
Step-by-step explanation:
First reflect the figure over the y axis. Then you can see that y is still 2 and that d has now become positive 6
Put those values in as (6,2) for the final figure
HELP ASAP!!!!! Find the lateral surface area and the total surface area of each figure. round to the nearest tenth if needed. SHOW ALL WORK. (Will give brainliest for correct answer and explanation on what to do)+
Answers
Answer:
(1-2) LS = 288cm² TS = 378cm²
(3-4) LS = 1419.2 TS = 1673.5
(5) LS = 543 TS = 606
Step-by-step explanation:
(1-2)
7 1/2 = 7.5
7.5 x 15 = 112.5
9 x 12 ➗ 2 = 54
54 x 2 = 108
9 x 7.5 = 67 .5
(3-4)
3.14 x 81 = 254.3
(5)
9 x 15 = 135 x 2 = 270
15 x 7 = 105 x 2 = 210
9 x 7 = 63
(add)
What kind of symmetry does this figure have?
point
line
both line and point
neither
Answers
Answer:
line and point
Step-by-step explanation:
The kind of symmetry the figure given above posses is a line and point symmetry.
What is point symmetry?A point Symmetry also known as origin symmetry is a Symmetry which occurs when every part of an object has a matching part. That is, the same distance from the central point but in the opposite direction.
Given that;
The objects looks the same when viewed from opposite directions.
We know that;
A line of symmetry is a line that cuts a shape exactly into two equal half. That is, if you fold the shape along the line, both halves would match exactly.
Therefore, the figure given above has both point and line Symmetry.
Learn more about line and point symmetry:
brainly.com/question/1553710
#SPJ3
brainliest if corerct
Answers
Step-by-step explanation:
[tex]2x + 2 = 3x - 52[/tex]
[tex]2 + 52 = 3x - 2x[/tex]
[tex]54 = x[/tex]
Answer:
54=x
if possible can u give me brainlist if correct
Step-by-step explanation:
Please help with this.
Answers
Answer:
neither, the slopes are the same
Step-by-step explanation:
780,000 divided by 10=?
Answers
Answer:
the answer is 78,000
Step-by-step explanation:
your welcome
Just do this in your head,780/10=78 then add on the three zeros from 780000 that you didnt use. 78>>> 78000
Answer=78000
You earn $60 for mowing 5 lawns. How much do you earn for mowing 15 lawns? Complete the ratio table to help you solve the problem. Write your answer in a complete sentence.
Answers
I need help with question please and thank you
Answers
Hello here is your answer!
a=4
If this helped please mark brainlist!
Answer:
A=4
Step-by-step explanation:
7=4+3
What is this shape called?
Answers
Answer:
This is a triangular prism
Step-by-step explanation:
what are facts about cross-sections (math)?
Answers
Answer: A cross section is the shape we get when cutting straight through an object.
Step-by-step explanation:
Which equation could be used to solve problems involving the relationships between the angles?
A) 90+(8a+9)=(11+2a)
B) 90-(8a+9)=(11+2a)
C) (11+2a)-90=(8a+9)
D) (8a+9)-(11+2a)=90
Answers
Answer:
B
Step-by-step explanation:
A scatter plot is made with the data shown:
Number of Weeks in Business 1 2 3 4 5 6 7 8 9
Number of Customers 0 2 4 6 8 10 12 14 16
What type of association will the scatter plot for this data represent between the number of weeks in business and the number of customers? (4 points)
a
No association
b
Positive linear association
c
Negative linear association
d
Positive nonlinear association