True. In a linear regression equation, when X is equal to the mean of X (MX), the predicted value of Y will be equal to the mean of Y (MY). This is because the regression equation aims to model the relationship between X and Y by finding the line that best fits the data points.
The regression equation takes the form of Y = bX + a, where b is the slope of the line and a is the y-intercept. When X is equal to its mean (MX), the term bX in the equation becomes b * MX, which simplifies to b * MX. Additionally, the y-intercept term a remains constant.
Since the mean of X (MX) is a fixed value, multiplying it by the slope (b) in the equation gives a constant term. This means that the predicted value of Y, when X is equal to its mean (MX), will be equal to a constant term plus the y-intercept (MY).
Therefore, when X = MX, the predicted value of Y in the regression equation is equal to MY, the mean of Y.
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School A has graduated 1,700 students and graduates
50 students every year. School B has graduated 600
students, but graduates 150 every year. How many years (Y)
will it be before School B has as many graduates as School A?
Answer:
the answer is 11 years
Step-by-step explanation:
if school A is graduated 50/years,
the graduated in 11 years is 550
added of graduated 1,700 in 550 is 2,250
if school B is graduated 150/years,
the graduated in 11 years is 1650
added of graduated 600 in 1650 is 2,250
so School A and B is to be equal in 11 years
A heron is perched in a tree 50 feet above sea level. Directly below the heron, a pelican is flying 17 feet above sea level. Directly below the birds is a trout, swimming 23 feet below sea level.
A.What’s the difference in height between the pelican and the heron?
B.What’s the distance in height between the pelican.
C.what’s the difference in height between the pelican and the trout.
D.What’s the distance in height between the pelican and the trout.
Answer:
Step-by-step explanation:
Your answer
A = 73
B= 33
C = 40
D = 40
Mark it as Brainlist answer. Follow me.
Jimarcus plans to build a free fence 5 1/3 yards long at the back of his garden. How many 2/3- yard sections of fence will he need
Answer:
8
Step-by-step explanation:
Jimarcus plans to build a fence of 5 1/3 yards longs
He want to divide it into 2/3 yard sections
Therefore the number that will be produced can be calculated as follows
= 5 1/3 ÷ 2/3
= 16/3 ÷ 2/3
= 16/3 × 3/2
= 16/2
= 8
Helppppp plsss
180 35 what is x
What’s the slope of line 1
Answer:
the slope in line 1 is a
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
→ Utilise the gradient formula
(y₂ - y₁) ÷ (x₂ - x₁)
→ Substitute in the numbers
(2 - -6) ÷ (1--1)
→ Simplify
4
evaluate the expression and enter your answer below
5x(4+5)-7^2
It's 5 times not X and 7 to the power
Answer:
hope it helps u
hope u find it helpful
PLease help asap!!! :)
Which expression is equivalent to 3x/x+1 divided by x + 1?
Answer:3x+4/x+1
Step-by-step explanation:
For the equation 3(7+x)=3x+k, what value of k will create an equation with infinitely many solutions?
Answer: k = 21
Step-by-step explanation:
3(7 + x) = 3x + k
21 + 3x = 3x + k
21 + 3x - 3x = 3x + k - 3x
k = 21
The height of 5 boys is 5.4 ft, 6.12 ft., 7.02 ft. 4.9 ft, and 6.25 ft. What is the average
height of these 5 boys?
What are the operation to solve the problem?
pls answer
Wll not just this question, but whenever you need to find average, you have to:
Wait, for example let's take ur question:
1st step we will add up all the values aka heights:
5.4+6.12+7.02+4.9+6.25=29.69
And then how many values did you take???
Its, 5 values
1st value= 5.4
2nd value=6.12
aaand so on....
However, then we will have to divide the sum by no.of values
29.69÷5=5.938
Aaand this is your FINAL ANSWER
Done!!!!
Hope I helped you!!!
Step-by-step explanation:
For the average height of fhe boys:
[tex] \frac{5.4ft + 6.12ft + 7.02ft + 4.9ft + 6.25ft}{5} \\ = 5.938 \: ft[/tex]
In solving for the average height, we used addition and division operations.
!!!! Rectangle A’B’C’D is the image of rectangle ABCD after which of the following translations
Answer:
C
Step-by-step explanation:
Find the equation in general form of the circle whose center is at (0,3) and
passing through the point (-2,1).
Answer:
5.0
Step-by-step explanation:
Which of the following is a factor of 7x2 + 42x - 49
x2 + 49
x+7
X-7
x+ 1
Answer:
[tex]x + 7[/tex]
is the answer because 7×2+42x-49
Mr. Patel bought lunch at a restaurant for $7.35. If he paid with a $10.00 bill, how much change did he get back?
A.
$2.55
B.
$2.65
C.
$3.35
D.
$3.65
Answer:
b. $2.65
Step-by-step explanation:
$10.00 - $7.35 = ?
$10.00 - $7.35 = $2.65
Answer:
your answer would be b. $2.65
PLEASE HELP IF RIGHT WILL GIVE BRAINLIEST!!
Answer:
{-8, -4, 0, 4, 8}
Step-by-step explanation:
brainliest please
Answer:
D
Step-by-step explanation
The numbers in replace of x result in answers that equal or are greater than 0.
x + y = 400
10x + 5y = 2750
Answer:
fart
Step-by-step explanation:
Is 14,48,50 a Pythagorean triplet
Step by step explanation please
Answer:
yes
Step-by-step explanation:
If the values are a Pythagorean triplet then the square of the largest value should equal the sum of the squares of the other 2
largest value = 50 ⇒ 50² = 2500
14² + 48² = 196 + 2304 = 2500
Since 50² = 14² + 48² then 14, 48, 50 are a Pythagorean triplet
What is 50% of 82 ? Please help !!
Answer:
The answer is 41
Step-by-step explanation:
OML PLEASE HELP! GIVING BRAINLIEST PLEASEE. Instruction are to answer all 3 questions naming their angle 4 ways. PLEASE
Answer: where is the image if there is ment to be one
Step-by-step explanation:
Solve this literal simultaneous equation for x and y.
[tex]ax+by=c[/tex]
[tex]bx+ay=c[/tex]
Answer:
The answer is below
Step-by-step explanation:
Firstly, let us find the value of x. Multiply the first equation by a and the second equation by b to get:
a²x + aby = ca (3)
b²x + aby = cb (4)
Subtract equation 4 from equation 3 to get:
x(a² - b²) = c(a - b)
but a² - b² = (a + b)(a - b)
x(a + b)(a - b) = c(a - b)
x(a + b) = c
[tex]x=\frac{c}{a+b}[/tex]
Secondly, let us find the value of y. Multiply the first equation by b and the second equation by a to get:
abx + b²y = cb (5)
abx + a²y = ca (6)
Subtract equation 5 from equation 6 to get:
y(a² - b²) = c(a - b)
but a² - b² = (a + b)(a - b)
y(a + b)(a - b) = c(a - b)
y(a + b) = c
[tex]y=\frac{c}{a+b}[/tex]
How many 3/4 pound weights can be made from 6 pounds of steel?
Answer:
8
Step-by-step explanation:
write an equation for a line perpendicular to y=-2x+1 and passing through the point (-4,3)
Answer:
Step-by-step explanation:
The reference line has a slope of -2. A perpendicular line will have a slope, m, that satisfies
-2m=-1, so it will have a slope of 1/2 then our line y=mx+b becomes
y=x/2+b, using point (-4,3) we have
3=-4/2+b
3=-2+b
b=5 so our line is
y=x/2+5 or more neatly
y=(x+10)/2
help me plz if you can
Answer:
The first problem the answer is x= -25/4
Step-by-step explanation:
I NEED HELP ASAP WILL GIVE BRAINLYEST
Answer: D. 25
Step-by-step explanation:
Answer:
the answer is 25
Step-by-step explanation:
The boys' basketball team at Washington High School has been doing really well so far this year. In the past six games, they've scored the following points.
84, 67, 74, 87, 67, 73
What is the mean of their scores?
20
67
73.5
75.3
Answer:75.3
Step-by-step explanation:
Add all the numbers then divide by how many numbers their are
Answer:
75.3
Step-by-step explanation:
You add all the numbers together and you get 452. Then you you divide 452 by how many numbers are in the set which is 6 and you get 75.2 but since there is 75.3 but no 75.2, 75.3 is your anwser.
Hope this explains a lot!!!!!!!!!!!!!!
What is is this graph representing??
A. Linear
B. Exponential
C. Neither
the city of luckett is pilling rock salt for use during ice storms. if the pile from last year is 29 feet high and 14 feet are added this year, how high is the pile of rock salt?
29 + 14 = 43
The pile of rock salt is 43 feet high
An orchand has 8 times more apple trees than pear trees. There are 981 trees in all. How many more apple trees are there
Answer:
763
Step-by-step explanation:
there are 763 more apple trees than pear trees
Step-by-step explanation:
so, first we write the words into equations.
8P = A because there are 8x apples per x pear, so to make it equal we must multiply pears by 8. P+A = 981. replacing "A" in the second equation with "8P" to get P+8P=981=9P divide both sides by 9 to get 109 pear trees. knowing this we can get 981-109=A=872 apple trees. the problem asks for A-P which we can replace the numbers to get (872)-(109)=763 more trees
Answer:122.625
Step-by-step explanation:981 divided by 8 equals 122.625
A landscaping company estimates the price of a job,in dollars, using the expression 60 + 12nh, where n is the number of
landscapers who will be working and h is the total number of hours the job will take using n landscapers. Which of the
following is the best interpretation of the number 12 in the expression?
A The company charges $12 per hour for each landscaper.
B A minimum of 12 landscapers will work on each job.
The price of every job increases by $12 every hour.
D Each landscaper works 12 hours a day
Factor f(x) = 4x2 + 11x? - 104x + 105 into linear factors given that – 7 is a zero of f(x).
f(x) = 4x + 11x2 - 104x + 105 = |
(Factor completely.)
Answer:
f(x) = 4x + 11x2 - 104x + 105 = (x - 3)(x + 7)(4x - 5)
Step-by-step explanation:
f(x) = 4x^3 + 11x2 - 104x + 105
has the coefficients {4, 11 -104, 105}. We perform synthetic division using the given -7 as divisor:
-7 / 4 11 -104 105
-28 119 -105
-----------------------------------
4 -17 15 0
Since the remainder is zero (0), we have shown that -7 is a zero of f(x). The coefficients of the quotient (above) are {4, -17, 15}. Let's try factoring the corresponding polynomial again using synthetic division. Start out by using 5 as divisor and determining whether or not the remaindeer is zero:
5 / 4 -17 15
20 15
-------------------------
4 3 30 No, the remainder is 30 and so 5 is not a
root of this quadratic. Try the divisor 3 instead:
3 / 4 -17 15
12 -15
---------------------------
4 -5 0 Yes, the remainder is 0 and so 3 is a root.
Thus, the given f(x) = 4x + 11x2 - 104x + 105 factors as follows:
f(x) = 4x + 11x2 - 104x + 105 = (x - 3)(x + 7)(4x - 5). Notice that the coefficients of the last factor come from those we found above when using 3 as a divisor in synthetic division.