Step-by-step explanation:
radius of circle =5 cm
circumference of a circle =2πr
=2π×5
=10π=10×3.14
circumference=31.4 cm
In a teacher's math course, a linear regression line was calculated to predict
a student's final exam score from the score he received on the midterm. The equation was
Y = 25.5 + 0.82 where y is the final exam score and x is the score on the midterm. AJ scored 90 on the first test. AJ actually scored 99 on his final exam. What is the value of his residual?
A. -1.5
B. 1.5
C. 95
D. 97.5
E. None of these
The given equation is the best line that approximates the linear
relationship between the midterm score and the score in the final exam.
AJ's residual is 0.3, which is not among the given options, therefore, the correct option is. E. None of these.Reasons:
The given linear regression line equation is; [tex]\hat y[/tex] = 25.5 + 0.82·[tex]\mathbf{\hat x}[/tex]
Where;
[tex]\hat y[/tex] = Final exam score;
[tex]\hat x[/tex] = The midterm score;
AJ score in the first test, [tex]\hat x[/tex] = 90
AJ's actual score in the exam = 99
Required:
The value of AJ's residual
Solution:
By using the regression line equation, we have;
The predicted exam score, [tex]\hat y[/tex] = 25.5 + 0.82 × 90 = 99.3
The residual score = Predicted score - Actual score
∴ AJ's residual = 99.3 - 99 = 0.3
AJ's residual = 0.3
Therefore, the correct option is option E;
E. None of theseLearn more about regression line equation here:
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PLEASE I AM IN DESPERATE NEED OF HELP
Answer:
A
Step-by-step explanation:
The open side means thats number is bigger. Ex: 1 < 2 or 2 > 1
Hope that helps
What is 5 14/12 in simplest form
Answer:
the answer is probably 7/6
hope I am correct and if not I'm sorry
182,000/907 step by step please
Answer:
200 R 600
or
200 600/907
Step-by-step explanation:
0 0 0 2 0 0
9 0 7 1 8 2 0 0 0
− 0
1 8
− 0
1 8 2
− 0
1 8 2 0
− 1 8 1 4
6 0
− 0
6 0 0
− 0
6 0 0
The sum of two numbers is 48.when the smaller number is subtracted from the larger number,the difference is 12. What are the two numbers
Answer:
The two numbers are:
30 and 18
Step-by-step explanation:
a + b = 48
a - b = 12
From the first eq.
a = 48 - b
Replacing this last value in the second eq.
(48 - b) - b = 12
48 - 2b = 12
48 - 12 = 2b
36 = 2b
36/2 = b
18 = b
from the first eq.
a + 18 = 48
a = 48 - 18
a = 30
Check:
from the second eq.
a - b = 12
30 - 18 = 12
original price of a cd is 12.50. what is the price with a discount of 39%
Answer:
original price of a cd is 12.50. what is the price with a discount of 39%
Step-by-step explanation:
True or False: Collection on account and sale of services for cash are considered cash inflows, while payment on account and payment of salaries are considered cash outflows from operating activities.
Answer:
true
Step-by-step explanation:
make this is helpful for you
You are to paint the globe held aloft by a statue of Atlas. The diameter of the globe is 10.5 in. How much surface area must you cover with paint if 27 square inches does not need to be painted (to the nearest hundredth)?
Answer:
Step-by-step explanation:
We have been given that we need to paint the globe held aloft by a statue of Atlas. Its diameter is 10.5 in.
First of all we will find the area of globe using area of sphere formula.
, where r represents the radius of sphere.
Since diameter is 2 times the radius, so the radius of our given globe will be:
Since 27 square inches does not need to be painted, so the area we must cover with paint will be:
Upon rounding our answer to nearest hundredth we will get,
Therefore, we must cover 319.36 square inches with paint.
PLEASE HELP I BEG IMMA FAILLLLLLLLL
In the gift shop of the History of Flight museum, Elisa bought a kit to make a model of a jet airplane. The actual plane is 21 feet long with a wingspan of 17.5 feet. If the finished model will be 12 inches long, what will the wingspan be?
Answer:
2 inches make a foot, therefore the scale model is 1/21 the size of the actual if you're using the information given above. so the wingspan should be 10
Hope I Helped You:)
Please help me pleaseeee
I’ll give brainliest
What is the perimeter of triangle ABC with coordinates of A(3,4), B(3,11), C(27,4)
Answer:
Is there supposed to be a picture or no?
Step-by-step explanation:
If a - 5b - 3 = 8, then the straight line ax + by + c = 0 must pass through the point
I) (1, 5)
II) (1, -5)
III) (5, -1)
IV) (-1, 5)
Please show your work...No spam.. Thank you.
Answer:
III) (5, -1)Step-by-step explanation:
Given relationship between the constants of the line ax + by +c = 0:
a - 5b - 3c = 8We can try options, the obvious one is:
a = 0, b = - 1, c = - 1In this case the line becomes:
0x - y - 1 = 0y = - 1This gives us the point (5, - 1), the option III
We can describe 3x - 2 as an expression.
How can we describe the parts of the expression that the arrows point to?
3x- 2
Given:
3x - 2
To find:
Describe the parts of the expression
Solution:
3x - 2Let us consider, f (x) = 3x - 2
The standard equation of the straight line is given by, y = mx + c
comparing the given equation with straight line equation, we get,
f (x) = y
m = 3
c = -2
m is the gradient of line
c is the y intercept (the graph crosses the y - axis)
4x−1<11 answer my question
Answer:
Step-by-step explanation:
answer this please
as percentages
A mistake was made in the steps shown to simplify the expression. Which step includes the mistake?
1732 + |-101 = 2
+
Step 1: = 1 + 9 + 10 = 2
+
Step 2= *** + 10 = 2
1 +9
10
Step 3: = 5 + 10 = 2
Step 4: =
2 + 10 = 2
Step 5: 12 = 2
Step 6: = 6
O A Step 4
OB. Step 1
OC Step 3
OD. Step 5
Answer:
Step 3.Step-by-step explanation:
In step 3, he/she should've divided 10 by 2 instead of adding 1/5 to 9/5.Conclusion:
Therefore, Step 3 includes the mistake.
Hoped this helped.
[tex]GeniusUser[/tex]
Jenna works a job where her pay varies directly with the number of hours she has worked. In one week, she worked 35 hours and made $274.75. How many hours would she need to work in order to earn $337.55?
What value of t makes the equation true?
tx3 = 12 x 6
Answer: 24
Step-by-step explanation:
tx3 = 12 x 6
3t = 12*6
3t = 72
t = 24
PLEASE HELP ME GUYS!!
this is your answer hope it's helpful for you
4. Find the difference. (-7p + 10) - (p + 12)
Answer:
-8p -2
Step-by-step explanation:
(-7p + 10) - (p + 12) =
-7p + 10 - p - 12 =
-8p -2
5x=30
AAAA
Help.. -v-
Answer:
x equals 6:
5x=30
x=30/5
x= 6
Answer:
x=6
Step-by-step explanation:
to help you understand whatever you do on one side you do on the other so
in this case to find x we need to divide x by 5 and if we divide x by 5 we also
need to divide 30 by 5
∵5x=30
∵5x÷5=30÷5
∵x=6
help QUICK PLS 12 POINTS JUST PLS
Answer:
The answer is 8.025.
Hope that helps. x
Yup, the guy above me is correct.
Find the surface area of a cylinder with radius 8m and height 5 m
Answer:
A≈653.45
Step-by-step explanation:
Solution
A=2πrh+2πr2=2·π·8·5+2·π·82≈653.45127
can someone help me
question down below
Answer:
N||M, K||J
Step-by-step explanation:
N and M are both parallel to each other and || symbolizes that, same goes for K and J
Write and solve a system of THREE inequalities that models the situation below.
Terrence is going to make and sell cupcakes and giant cookies as a fundraiser to earn money for his bank uniform. He sells the cupcakes for $1.25 each and the cookies for $0.75. He knows he will sell at least 10 cupcakes and 24 cookies. He wants to make at least $50. Find a possible combination of cupcakes and cookies he needs to sell to meet his goal.
Answer:
x = cupcakes
y = cookies
3x + 1y ≥ 205
x cupcakes at $3 each plus y cookies at $1 each is greater than or equal to $205
Step-by-step explanation:
Which of the following is an irrational number?
A
64−−√
B
90−−√
C
25−−√
D
169−−−√
please help
Answer:
sqrt(90) is irrational
Step-by-step explanation:
sqrt(64) = 8
sqrt(90) = 3 sqrt(10)
sqrt(25) =5
sqrt(169)=13
The only one that is not simplified to an integer is sqrt(90)
sqrt(90) is irrational
pls help this is homework
Answer:
ans 144
Step-by-step explanation:
hope this helps
Answer:
144
Step-by-step explanation:
First we can start by replacing x with the value (2)
[tex]120 + 18(2) - 3 {(2)}^{2} [/tex]
[tex]120 + 36 - 3(4)[/tex]
[tex]120 + 36 - 12[/tex]
Therefore the final answer is 144
My question that I need help on
Answer:
Step-by-step explanation:
please help i will mark brainliest
Answer:
. (5,20)
Step-by-step (x,y)=(5,20)
What is 0.02349 written in standard form to 3 significant figures
Solve from right to left
[tex]\\ \sf\Rrightarrow 0.02349[/tex]
[tex]\\ \sf\Rrightarrow 0.0235\times 10^{-1}[/tex]
[tex]\\ \sf\Rrightarrow 2.35\times 10^{-3}[/tex]
Option C is correct
