Answer:
-21 is the correct answer
Step-by-step explanation:
-7.5 - 5 - 8.5 = -21
Answer:
-21 is the correct answer
-7.5 - 5 - 8.5 = -21
A market researcher, having collected data on breakfast cereal expenditures by families with one, two, three, four, or five children living at home, plans to use an ordinary regression model to estimate the mean expenditures at each of these five family size levels. However, the researcher is undecided between fitting a linear or a quadratic regression model, and the data do not give clear evidence in favor of one model or the other. A colleague suggests: "For your purposes, you might simply use an ANOVA model." Is this a useful suggestion? Explain.
Answer:
Yes it is a useful suggestion
Step-by-step explanation:
Using the ANOVA model is a good idea because using it would give allowance For us to compare the five means of the five different family sizes. By this, during investigation there would be no confusion as to if a quadratic or linear relationship exists between the variables family size and breakfast cereal expenditure.
We would be comparing the mean expenditure of food of these 5 different family size levels so anova is useful.
Answer and Step-by-step explanation:
ANOVA model is mathematical model describe relationship between response and treatment.
One way ANOVA is given by:
YIJ = µ + Ti +Єij
Where, yij represent jth observation on ith treatment.
In this question, researcher collected data on the breakfast expenditure of a family whose size is five.
Yes, we can use ANOVA model. ANOVA can be used even if there is quadratic nonlinear relationship between expenditure and family size.
Since, the family size is five; we have to compare their mean expenditure on food.
The ANOVA one way model is:
YIJ = µ + Ti +Єij
For i=1, 2,3,4,5 and j= 1, 2,3,4,5
With hypothesis,
H01 : µ1 are equal.
H11 : at least two i not equal to j.
Haaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaq
Answer: 20
Step-by-step explanation:
because if he earned 12 dollars and it equals 32 dollars he would have 20
Ken had $40 then spent $20 on a game he now has $20 left then he earns $12 mowing lawn and now has $32.
Ken had $40 before he bought the game
Ken is making gift bags for a party. He has 64 colored pens and wants to put the same number in each bag. How many bags will Ken make if he puts 4 pens in each bag? Explain what you did to find the answer:
Answer:
16
Step-by-step explanation:
If Ken has 64 pens and is putting them into bags then 64 divided by 4 will give you the amount of times that 4 can be separated by, which is your bags
A) Solve the Gompertz equation
dy dt = ryln(K/y)
subject to the initial condition y(0) = y0.
B) For the given data r = 0.73 per year, K = 80,300 kg, and y0 K = 0.25. Use the Gompertz model to find the predicted value of y(4).
C) For the same data as in part (b), use the Gompertz model to find the time τ at which y(τ) = 0.77K.
Answer:
a) [tex]y = Ke^{ln(\frac{y_0}{K})e^{-rt} }[/tex]
b) [tex]y(4) = 1,082.043 kg[/tex]
c) [tex]t = 2.286 years[/tex]
Step-by-step explanation:
Find the step by step solution to the question in the attachment.
What has kept you from saving in the past?
A Potential Answer:
One thing that has kept me from saving in the past is my confusion of my "wants" and "needs". An outcome of this is me constantly spending money on things that aren't necessary instead of buying things that are useful. An example of this is when I went to the store and decided to buy expensive band merchandise, as well as my groceries. If I hadn't bought the band merchandise, I could have saved $30. To fix this, I started to work on my self-control and budget management.
I hope this helped!
Good luck <3
Mrs. Helms's class can be divided into equal groups of 5 students or groups of 6
students. Which of the following is a possible size of her class?
Answer:
30
Step-by-step explanation:
5 times 6 equals 30
A coffee shop needs to purchase custom cups. Company C charges a flat fee of $155 plus $15 per cup. Company D does not have a flat fee but charges $30 per cup.
What is the minimum number of cups that must be ordered for company C to be a better deal than company D?
Enter your answer in the box.
cups
Answer:
minimum 11 cups
Step-by-step explanation:
155 + 15c = 30c
155 = 15c
10.333 = c
Dan enlarged the size of a triangle to a
width of 42 in. What is the new height if
it was originally 3 in wide and 1 in tall?
Answer:
14 in.
Step-by-step explanation:
42/3 = 14
1 × 14 = 14
Height: 14 in.
Expand and simplify the following expression. 3(p-2q)-4(2p-3q-5) *
Answer:
[tex] - 5p + 6q + 20[/tex]
Show how to solve the following; answer must be with fractions and pi
theta=tan^-1(-6/6)
I can get the decimal form from calculator, but I require the fractional answer and I need to know how it even gets obtained. How do we know what inverse tan of -6/6 will = to?
Answer:
3pi/4 and -pi/4
Step-by-step explanation:
We can simplify -6/6 to -1.
Therefore, this function can be simplified to arctan(-1).
Recall that the meaning of arctan is to find a value that will get the value inside the parenthesis when taken the tangent of it. In other words, tan(x) = -1.
Recall that tan(x) = sin(x)/cos(x). Now recall that sin(pi/4) and cos(pi/4) are both sqrt(2)/2, meaning that tan(pi/4) is 1. To make it -1, we can either make sin(x) -1 while keeping cos(x) 1, or the other way around.
If x is -pi/4, cos(x) will still be 1, but sin(x) will be -1, so tan(-pi/4) will be -1.
If x is 3pi/4, cos(x) will be -1, but sin(x) will still be 1, so tan(3pi/4) will be -1.
Side note: there are still infinite more answers. You can attain them by adding or subtracting 2pi as many times as you want from 3pi/4 or -pi/4 and still get an arctan of -1.
HURRY!!!
a
Undefined
b
Negative
c
Zero
d
Positive
Answer:
A, undefined
Step-by-step explanation:
The general rule is that vertical lines are undefined slope, because there's literally no change in x values. The vertical line test also fails, meaning there is no slope. Horizontal lines have a slope of 0, while vertical lines don't own any numbers that are important except for x-axis numbers.
If you do y2-y1 over x2-x1, you literally get 1/0 which is nothing. 0/1 = 0, but 1/0 is nothing.
Hope this helps!
5 b * 20 b +4 if b is 6
Answer:
3604
Step-by-step explanation:
Step 1: Define
5b · 20b + 4
b = 6
Step 2: Simplify
100b² + 4
b = 6
Step 3: Substitute and Evaluate
100(6)² + 4
100(36) + 4
3600 + 4
3604
Answer:
3604
Step-by-step explanation:
Plug the value of b in: 5(6) × 20(6) + 4Simplify: 30 × 120 + 430 × 120 = 3600Plug 3600 in: 3600 + 43600 + 4 = 3604I hope this helps!
You have been waiting for months. The latest version of your favorite video game comes out today. You have mowed lawns, done extra chores, and saved up gift money. The new game costs $49.99. You have exactly $50.00 saved. So you are good to go, right? In 3 to 5 sentences explain if you have enough money to buy that game in Pennsylvania where sales tax is 6% If you have enough money, will you have change? If you do not have enough money, how much more do you need?
The savings are not enough to buy the video game due to sales tax and $ 2.99 is needed more to buy the latest version of favorite video game.
What is the formula to calculate sale tax ?The sales tax is calculated by multiplying the cost price by the rate of sales tax.
Amount of sales tax = rate of sales tax × Cost price
Rate of sales tax = percent of sales tax / 100
Savings money = $ 50.00
Cost price = $ 49.99
Given percentage of Sales Tax = 6%
Amount of sales tax = (sales tax/ 100 ) × $ 49.99
= (6/100)× 49.99
= 2.9994
Total Selling price of the video game will be = cost price + sales tax
= 49.99 + 2.9994
= $ 52.9894
= $ 52.99
Selling price is greater than savings it means more money is needed to buy the video game.
Extra money needed = Selling price - savings = $52.99 -$ 50.00= $ 2.99
Therefore, $ 2.99 is needed more to buy the latest version of favorite video game
Also , learn more about the sales tax from the link below:
https://brainly.com/question/13968527
#SPJ2
24 students in a class took an alegrba test if 18 students passed the test what percent passed
Answer:
75 percent
Step-by-step explanation:
18 times 24 times 100 percent is 75
A strip of tape will be placed around the court.
Which measure would be used in finding the amount of tape needed?
Is it a perimeter or an area
Answer:the answer is perimeter
Step-by-step explanation:
48divided by 2(9+3)
ANSwer plz
Answer:
288
Step-by-step explanation:
9+3=12
48÷2=24
24x12=288
Find the value of x - The answer is 45, but I need to show my work!!!
THANK YOU
Answer:
x = 45°
Step-by-step explanation:
The total measurement is 360° (the measurement of a circle).
Set the equation. Set all measurements equal to 360:
228 + (x + 29) + (x + 13) = 360
Combine like terms:
228 + 29 + 13 + 2x = 360
2x + 270 = 360
Isolate the variable, x. Note the equal sign, what you do to one side, you do to other. Do the opposite of PEMDAS. First, subtract 270 from both sides:
2x + 270 (-270) = 360 (-270)
2x = 360 - 270
2x = 90
Next, divide 2 from both sides of the equation:
(2x)/2 = (90)/2
x = 90/2
x = 45
x = 45° is your answer.
~
2 x 10 to the 3rd power standard form
Find the value of x when 6 - 2x = 6x - 10x + 18
Answer: x=6
Step-by-step explanation: in this equation you're trying to
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
6-2*x-(6*x-10*x+18)=0
Pull out like factors :
-12 + 2x = 2 • (x - 6)
x-6 = 0
Add 6 to both sides of the equation :
x = 6
PLEASE HELP MATH!!!!
.Two cars start at the same point and move in the same direction. One car travels 5mph faster
than the twice the speed of other car. After 10 hours the distance separating the two cars is 60
miles. What was the speed of each car?
Answer:
the faster one is 6 mph but i have know idea what the slower one is
Step-by-step explanation:
What’s the slope of 2,1 and -4,4
Answer:
Equation: y = -0.5x + 2.
Step-by-step explanation:
Study the diagram.
Calculate the value of x in the polygon.
Enter your answer in the box. Enter only your answer.
degrees
Which of the following is used to represent complex numbers?
A.
x2 + y
B
C.
bi + 2
D.
a + bi
Answer: D) a+bi
Where both a and b are real numbers.
In your textbook, you might see [tex]a,b \in \mathbb{R}[/tex] to indicate that they are real numbers.
An example would be 7+13i, where a = 7 and b = 13.
Evaluating expressions practice 3-8
Answer:
Please upload an image of your Brainly question
Pls halp meh. reeeeeeeeee
Answer:
x = 8, and y = 21
Step-by-step explanation:
You probably don't need this since this question was yesterday, but if you still need help:
I'm not the best at explaining but, Angles EOF and FOG are complementary, making 3y equal to 63. 63 divided by 3 is 21 making y = to 21. Angles AOE and GOB are also complementary adding them in the equation makes 9x + 18.
90 degrees minus 18 is 72, 72 divided by 9 is 8. Making 8 equal to x. 9x +18 ((9)8 + 18) is equal to 90 degrees.
Try to make something better again I'm not good at explaining.
Form a polynomial whose real zeros and degree are given.
Zeros: – 4, 0, 6;
degree: 3
Answer:
?
Step-by-step explanation:
-6(а + 8)
Distributive Property
Answer:
-6a-48
Step-by-step explanation:
-6(a+8)
=(-6)(a + 8)
=(-6)(a) + (-6)(8)
=-6a-48
Dev keeps a record in graph form of how far his car travels and the number of gallons of gasoline it uses. What is the slope of the graph?
Be sure to answer all questions and show all your work for full credit.
Answer:32
Step-by-step explanation:
Answer:
32
Step-by-step explanation:
Joey made this
graph to show how many incorrect
answers students got on a test. how
many students got 3 answers incorrect?
how do you know?
number of students
Answer:
you need to attach the graph for us to answer, just count
Step-by-step explanation: