Answer:
I believe the answer should be 90%
An academic advisor calculated the mean GPA for college freshmen to be 2.33, with a standard deviation of 1.06. The advisor knows that there is a relationship between high school GPA and freshman-year GPA. If the advisor uses each student's high school GPA to predict his/her freshman-year GPA, what happens to the average error in prediction (relative to not using high school GPA to predict freshman-year GPa.
Answer:Average error will be less
Step-by-step explanation: Prediction error refers to the difference between the the actual and predicted value of an observation. Using correlation analysis or study, The level or degree of correlation or relationship between two measured variables usually determines the variation or measure of the prediction error. If there is no relationship or correlation between two measured variables, if such model is used to make prediction, the average prediction error will be very high. However, since it is stated that there exist a relationship between high school GPA and Freshman-year GPA, then making prediction based on this assertion will lessen the average prediction error.
Solve for x. Round to the nearest tenth.
Answer:
32
Step-by-step explanation:
just took it
Given the following sets.
A = {0, 1, 2, 3)
B = (a, b, c, d]
C = {0, a, 2, b)
Find BC
Answer:
C={0, a, 2, b, 4, c,}
Step-by-step explanation:
I thing you are doing patterns but I hope this helps
Rocko paid 12.50 for 25 game tickets
Evaluate the problem -3-(+4)
Answer:
-7
Step-by-step explanation:
-3 - (4) = ?
Remove parentheses:
= -3 - 4
Subtract the numbers:
= -7
Martha earns $16.50 an hour for a regular 40 hour week. He overtime payo is 1.5 times her regular hourly rate. This past week Martha earned $948.75 in total pay. Approximately, how many hours of overtime did she work this past week? (Round you answer to the nearest hour. Just put the number, do not include the word hour) *
Answer:
12
Step-by-step explanation:
Regular work week is 40 hours; at $16.50 per hour, that comes to $660.
Subtracting $660 from the toal $948.75 yields $288.75, which represents her pay at the overtime rate of (1.5)($16.50/hr), or $24.75/hour
Dividing $288.75 by this overtime rate of $24.75/hr yields 11.666 ...
We conclude that she worked approximately 12 hours overtime to end up
with $948.75 total pay.
Plz help!! Quesion above
I need the answer so please help it is worth 88 points
Answer:
24
Step-by-step explanation:
If she did all 3of them today then you subtract a day from each one then it would look like this
5+4+15=24
What's the question? You can edit if you're on pc I think so you can add a picture or type it up. I'll also edit this so I can help u :)
Jimmy earns $9.25 per hour working at a local grocery store. If Jimmy earned $74 last week, which equation would be used to determine h, the number of hours he worked last week?
f(x) = (x - 3)² +5 transformations?
Step-by-step explanation:
Since (a - b)² = a² - 2ab + b²
f(x) = (x² - 6x + 9) + 5
= x² - 6x + 14
Archie is stranded in a war zone in the land of the Xhosas. His only chance of survival is to reach Sudland, which lies 100 miles away. There are just two routes to Sudland; one is through a desert, and the other is a long and perilous trek through the mountains. Both routes are terribly dangerous. In the past, 26% of all who tried to reach Sudland failed. Of all attempts to reach Sudland, 1 out of every 40 were by the desert route. Although it is the longer route, the mountains seem to provide more success: 75% of those who attempted to reach Sudland through the mountains were successful. To save time, Archie intends to go via the desert. What are his chances of making it through to Sudland
Answer:
The chances of success for Archie is [tex]P(S|D) = 35\%[/tex]
Step-by-step explanation:
From the question we are told that
The distance of Sudland from Xhosas is d = 100 miles
The probability of failure is [tex]P(F) = 0.26[/tex]
The probability of choosing the desert route is [tex]P(D) = \frac{1}{40} = 0.025[/tex]
The probability of reaching Sudland through the mountain is [tex]P(S|M) =0.75[/tex]
Generally the probability of choosing the mountains route is
[tex]P(M) = 1 - P(D)[/tex]
[tex]P(M) = 1 - 0.025[/tex]
[tex]P(M) = 0.975[/tex]
Generally the probability of success is mathematically represented as
[tex]P(S) = 1- P(F)[/tex]
[tex]P(S) = 1- 0.26[/tex]
[tex]P(S) = 0.74[/tex]
Generally the probability of success in reaching Sudland is also mathematically represented as
[tex]P(S) = P(S|M) * P(M) + P(S|D) * P(D)[/tex]
=> [tex]P(S|D) = \frac{P(S) - P(S|M) * P(M)}{P(D)}[/tex]
substituting values
=> [tex]P(S|D) = \frac{0.74 - 0.75 * 0.975}{0.025}[/tex]
=> [tex]P(S|D) = 0.35 [/tex]
=> [tex]P(S|D) = 35\%[/tex]
A spinner is divided into 12 equal-sized sections. Each section is labeled with a number.
Lee spins the spinner once. Which outcome is most likely?
Answer:
It is a one and twelve chance for each section
Step-by-step explanation:
1. Explain in words how you would solve the following equation: 4x + 1 = 6x - 11
Answer:
your is x=6
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
3. 28/ч - 2x3 =
Answer
Answer:
28/4 - 2x^3 = 7- 2x^3
Hope this helps!
Answer:
1
Step-by-step explanation:
This is the answer because:
You can use PEMDAS or GEMS to help you remember the order of operations.
PEMDAS: Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction
GEMS: Grouping (Parenthesis), Exponents, Multiplication and Division (whichever comes first from left to right), Addition and Subtraction (whichever comes first from left to right).
1) We have to use the order of operations in order to solve this.
2) First, we have to divide because it's the first thing there is, 28/4 = 7
3) Next, we have to multiply since we cannot subtract before multiplying because you have to follow the rules of Order of Operations. 2 x 3 = 6
4) Finally, 7 - 6 = 1
Hope this helps!
Problem:
Jett had a coupon to buy a computer for 40% off. He paid $210 for the computer. What was the original price?
Answer:
290
Step-by-step explanation:
Step-by-step explanation:
290 because of the percentages
FILL IN THE BLANK
If an equation has one solution.. It means.. Only ______ Number will make this equation true. Can you think of an equation that would make this equation true?
Answer:
One
....................
Answer:
1
Step-by-step explanation:
Because if you plug in any other number than that 1 number (the solution) it will make the equation false. So, there will only be 1 number that can make the equation true.
please help !!! 3x+8y
x = 7
y = -2
Answer: 5
Step-by-step explanation:
you do each variable individually first, 3(7)=21, 8(-2) is -16, then you add them, 21-16=5 so that is your answer
BRAINLIEST TO THE FIRST CORRECT ANSWER!!The expression on the left side of an equation is shown below.
Negative 4 (x minus 2) + 5 x = box
If the equation has no solution, which expression can be written in the box on the other side of the equation?
2(x + 4) – x
x + 8
4(x + 2) – 5x
x
Answer:
The correct answer is B. x + 8
What is the variable used to predict another variable called________.A. Independent variableB. Dependent variableC. Moderating variableD. Intervening variable
Answer:
A. Independent variable
Step-by-step explanation:
The prediction of a variable can be done if we have the independent variable. Which is the required variable that is used to determine the value of the other variable. The variable to be predicted is dependent on the required variable.
An independent variable can also be referred to as a predictor variable. When its value is known, it can be used to obtain the dependent variable.
Solve the equation for x.
2
3
x −1
9
x + 5 = 20
AnsweSolve the equation for x. 2 3 x −1 9 x + 5 = 20
Step-by-step explanation:
Answer:
X=27
Step-by-step explanation:
In a class of 25 students, 24 of them took an exam in class and 1 student took a make-up exam the following day. The professor graded the first batch of 24 exams and found an average score of 74 points with a standard deviation of 8.9 points. The student who took the make-up the following day scored 64 points on the exam. what is the new average
Answer:
The value is [tex]\mu_n = 73.6[/tex]
Step-by-step explanation:
From the question we are told that
The total number of students is [tex]N = 25[/tex]
The number of student that took exam in class is n = 24
The number that took make up exam is k = 1
The average score of the first 24 students is [tex]\mu = 74[/tex]
The standard deviation is [tex]\sigma = 8.9[/tex]
The average score of the student who took make up test is [tex]\= x = 64[/tex]
Generally the new average is mathematically represented as
[tex]\mu_n = \frac{( n * \mu ) + \= x }{N}[/tex]
[tex]\mu_n = \frac{( 24 * 74 ) + 64 }{25}[/tex]
[tex]\mu_n = 73.6[/tex]
Simplify the expression: 2(2 + 6g)
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{4 + 12g}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{2(2 + 6g)}[/tex]
Distribute 2 through the parentheses
[tex] \longrightarrow{ \sf{2 \times 2 + 2 \times 6g}}[/tex]
[tex] \longrightarrow{ \sf{4 + 12g}}[/tex]
Hope I helped!
Best regards! :D
(3 1/3 −1 5/6 ) ÷ 2 1/7 −1 1/3 · 2.4
Answer:
Exact form -5/2 Decimal form -2.5 Mixed number -2 1/2
Step-by-step explanation:
Add like terms 5x + 2y + 2x - 4y - 3x
Answer:
4x-2y
Step-by-step explanation:
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{4x - 2y}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{5x + 2y + 2x - 4y - 3x}[/tex]
Like terms are those which have the same base.
Combine the like terms and simplify
[tex] \dashrightarrow{ \sf{5x + 2x - 3x + 2y - 4y}}[/tex]
[tex] \dashrightarrow{ \sf{4x - 2y}}[/tex]
Hope I helped!
Best regards! :D
Draw a discrete graph that has a domain of 0<=x<=8 and a range of (2,4,6,8,10).Write a situation for the graph.(You don't have to draw the graph,I just want the situation)
Answer:
X² - Y² = 1
X² = (X - 0)²
Y² = (Y - 0)²
[(X - 0)²/1] - [(Y - 0)²/1] = 1
Centro (0 , 0)
a² = 1 : b² = 1
c² = 1 + 1 = 2
c =
Focos :(0 +/- 1.414213562 , 0)
F1 : ( -1.414213562 , 0)
F2 : (1.414213562 , 0)
Vertices: (+/- 1 , 0)
V1: (1 , 0)
V2: (-1, 0)
Te anexo la grafica
Step-by-step explanation:
3. (03.01 MC)
Which expression is equivalent to 4(9 + 7)? (1 point)
36 + 7
13 + 11
36 + 28
13 + 7
Answer:
36+7
Step-by-step explanation:
4(9+7) = 43
36 + 7 also equals 43
Step-by-step explanation:
4(9+7)
4(16)
64
36+28 is the equivalent as it amounts to 64
When is there no solution to a compound inequality is it AND or OR
Answer:
The solution could begin at a point on the number line and extend in one direction. 3. In cases where there is no overlap between the two inequalities, there is no solution to the compound inequality.
Step-by-step explanation:
Solve for b b+4.22=7.08
Steps to solve:
b + 4.22 = 7.08
~Subtract 4.22 to both sides
b = 2.86
Best of Luck!
Which two ratios represent quantities that are proportional?
A. 18/15 & 24/20
B. 4/6 & 9/12
C. 9/14 & 45/56
D. 33/18 & 66/26
Answer:
Option A 18/15 & 24/20
Step-by-step explanation:
PLEASE HELP U GET BRINLIEST IF ANDMSWERED
Answer:
b=10
Step-by-step explanation:
I think the other part would be √-300 √3 but that's the best i could do
