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Related Questions
The random variable X has mean 12 and standard deviation 3. The random variable W is defined as W = 7+2X. What are the mean and standard deviation of W?
A. The mean is 24, and the standard deviation is 6.
B. The mean is 24, and the standard deviation is 13.
C. The mean is 31, and the standard deviation is 3.
D. The mean is 31, and the standard deviation is 6.
E. The mean is 31, and the standard deviation is 13.
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Answer: D. The mean is 31, and the standard deviation is 6.
Step-by-step explanation:
Given the data :
X = mean = 12 ; Standard deviation = 3
W = 7 + 2x
Variance of W = 2x
Variance = Standard deviation²
(2x)² = 4x²
Variance
Standard deviation of X = 3
Variance (W) = 4*3² = 4 * 9 = 36
Variance (W) = 36
Standard deviation = sqrt(variance)
Standard deviation = sqrt(36) = 6
Mean ; of x = 12
Mean(W) = 7 + 2(12)
Mean = 7 + 24
Mean = 31
3
Write the value of the 3 in each number.
a) 3.65
b) 0.093
c) 18.31
d) 72.439
e) 32.701
f) 19.03
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Answer:
A. hundreds
B. ones
C.. tens
D. tens
E. 10,000
F. ones
Answer:
a. units or 3.00
b. thousandths or 0.003
c. tenths or 0.30
d. hundreths or 0.030
e. tens or 30.0
f.hundreths or 0.03
Step-by-step explanation:
Will give Brainliest! A rectangle on the coordinate plane has vertices at (0, 0), (4, 0), (4, 2) and (0, 2). A dilation of the rectangle has vertices at (0, 0), (2, 0), (2, 1) and (0, 1). Find the scale factor.
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Answer: Sample. Points. A(2, 1). B(1, 3). C(3, 2). Segments ... and angle measures of the image of △ABC after a dilation with a scale factor of k? Dilating Lines ... Graph quadrilateral KLMN with vertices K(−3, 6), L(0, 6), M(3, 3), and N(−3, −3) ... Find the perimeter and area of the rectangle. b.
Step-by-step explanation:
Rita is a nurse her regular rate is $14.62 per hour. She is paid double-time (two times the hourly rate) for holidays. During one week she worked 36 regular hours plus 8 holiday hours.
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The amount of money when she worked one week she worked 36 regular hours plus 8 holiday hours will be $760.24.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
Rita is a nurse her regular rate is $14.62 per hour. She is paid double-time (two times the hourly rate) for holidays.
Then the amount of money when she worked one week she worked 36 regular hours plus 8 holiday hours will be
⇒ $14.62 x 36 + $14.62 x 2 x 8
⇒ $526.32 + $233.92
⇒ $760.24
The amount of money when she worked one week she worked 36 regular hours plus 8 holiday hours will be $760.24.
More about the Algebra link is given below.
https://brainly.com/question/953809
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PLEASE HELP!!!! ❗❗❗❗❗❗❗
I NEED THE ANSWER TO THIS ASAP!!! PLS HELP!!! question below ;-;
the track team is trying to reduce their time for a relay race. First they reduced their time by 2.1 minutes. Then they are able to reduce that time by 1/10. If their final time is 3.96 minutes, what was their beginning time? Show or explain your reasoning.
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Answer:
6.27 minutes
Step-by-step explanation:
3.96+2.1=6.06
1/10=0.1x2.1=0.21+6.06=6.27
88 cubic feet per year express pint per day?
Answers
Answer:
14.4282 or 14.4 rounded
Step-by-step explanation:
This graph and table show the total number of cars parked in a parking lot, n, after it was open for t hours.
Plot and table. Plot has horizontal axis from 0 to 3 in increments of 1, labeled t, and vertical axis from 0 to 18 in increments of 2, labeled n. Plot shows the points left parenthesis 0 comma 0 right parenthesis, left parenthesis 1 comma 6 right parenthesis, left parenthesis 2 comma 12 right parenthesis, and left parenthesis 3 comma 18 right parenthesis. Two-column table has column Time in hours left parenthesis t right parenthesis showing values 0, 1, 2, 3 and column Number of cars parked left parenthesis n right parenthesis showing values 0, 6, 12, 18.
What is an equation showing the relationship between n and t?
Enter your answer by filling in the box to complete the equation.
n =
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Answer: n = 6t
Explanation: i took the test
Which pair of expressions is equivalent? ОА. A. 4x – 12 and 3(x – 3) B. 2(x + 3) + 1 and 2x + 6 C. 11x – 4 + 2x and 13x – 4 D. X-5 – 10x and -11% - 5
Answers
Answer:
[tex]11x - 4 + 2x[/tex] and [tex]13x - 4[/tex]
Step-by-step explanation:
Given
Options A to D
Required
Determine the equivalent pair
To do this, we solve each options one after the other.
[tex](a):\[/tex]
[tex]4x - 12[/tex] and [tex]3(x - 3)[/tex]
Open bracket
[tex]4x - 12[/tex] and [tex]3 * x - 3 * 3[/tex]
[tex]4x - 12[/tex] and [tex]3x - 9[/tex]
The above pairs are not equivalent
[tex](b):\[/tex]
[tex]2(x + 3) + 1[/tex] and [tex]2x + 6[/tex]
Open bracket
[tex]2x + 2*3 + 1[/tex] and [tex]2x + 6[/tex]
[tex]2x + 6 + 1[/tex] and [tex]2x + 6[/tex]
[tex]2x + 7[/tex] and [tex]2x + 6[/tex]
The above pairs are not equivalent
[tex](c):[/tex]
[tex]11x - 4 + 2x[/tex] and [tex]13x - 4[/tex]
Collect Like Terms
[tex]11x + 2x - 4[/tex] and [tex]13 - x[/tex]
[tex]13x - 4[/tex] and [tex]13 - x[/tex]
The above pairs are equivalent
In the diagram below, the three lines intersect in the same point, forming six numbered angles.
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For the given figure of intersecting lines the expression holds is m∠1 + m∠3 + m∠5 = 180°. Option D is correct.
Given that, A figure of the intersecting lines is given where 3 lines intersect at the same point.
What is the angle?The angle can be defined as one line inclined over another line.
What is a Line?A line can be defined by the shortest distance between two points is called a line.
Here,
From the figure
∠1 = ∠4
∠2 = ∠5
So,
∠6 = ∠3
Now, from the option, the property hold is m∠1 + m∠3 + m∠5 = 180°. because m∠1 + m∠6 + m∠5 = 180°, or ∠6 = ∠3.
Thus, for the given figure of intersecting lines the expression holds is m∠1 + m∠3 + m∠5 = 180°. Option D is correct.
Learn more about Angles here: https://brainly.com/question/13954458
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Write an equation for line N
Answers
Answer:
y=x-1
Step-by-step explanation:
30 POINTS WOWWWWWW plz answer :)
Answers
Answer:
Step-by-step explanation:
In the balance scale/equation analogy, what should you write in the blank on the right side of the equation in order to balance the scale for the following equation? 2(x + 1) = 2x + ______
(x + 1)
4
x
2
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Answer:
Option D: 2 is the correct answer.
Step-by-step explanation:
Given equation is:
2(x + 1) = 2x + ______
For balancing the equation, the variables and constants must be same on both sides of the equation.
Simplifying 2(x+1) gives us 2x+2
As 2x is already there, we will add 2 with it in the equation.
Hence,
Option D: 2 is the correct answer.
PLEASE HELP ME FAST I NEED HELP PLEASE
Answers
Answer:
2 - Ratio B
3 - Ratio B
4 - Ratio B
5 - Ratio A
These are the correct answers
Find x
27 degrees and 32 degrees will give brainlist
Answers
Answer:
x = 121°
Step-by-step explanation:
If you add up all the angles of a triangle, you get 180°.
So you must add up all the angles.
[tex]27+32+x=180\\\\59+x=180[/tex]
Next you subtract 59 on both sides.
[tex]x=121[/tex]
x should be 121°.
If you would like to check your answer, you can add up 27, 32, and 121. If it all equals to 180, then your answer is correct.
Solve 4k + 4 > k+ 16.
1. k> 2.4
2. k>5
3. k>4
4. k> 6.7
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the answer
3. k>4
step by step
Answer:k>4
Step-by-step explanation: I got it right on the test :)
joe used 20 gallons of gas to go 300 miles. At this rate, how much gas must he use to go 3500 miles?
STEP BY STEP ASAP PLEASE ITS EQIVALENT RATIO
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Answer:
400 miles se tiene que multiplicar y sumar
Is 6x+3y=42 an infinite solution
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nope, I got
x= −1/2y+7
I hope this answers ur question!
Answer:
No it is not. A good calculator for algebra is Symbolab
How far is `10\%` of a `2,000`-kilometer trip?
Answers
Is 9/16 a terminating or repeating decimal plz ASAP brainley
Answers
Answer:
terminating.
Step-by-step explanation:
9/16 converted to a decimal is .5625 which is terminating
In basketball, Nicole makes 4 baskets for every 10 shots. If she takes 3 shots, what is the probability that exactly 2 of them will be baskets
Answers
Answer:
0.288
Step-by-step explanation:
Calculation for what is the probability that exactly 2 of them will be baskets
In order for us to find the probability that exactly 2 of them will be baskets we would have to make use of binomial distribution using Microsoft Excel
P =4 baskets/10 shots=0.4,
x = 2
n = 3 shots
P(2)=BINOMIAL DISTRIBUTION(2,3,0.4,FALSE)
P(2)=0.288
Therefore the probability that exactly 2 of them will be baskets is 0.288
find the value of X
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Answer:
The value of x is 180 of this question
The meaning of an inequality depends on the __________________of the inequality sign.
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Answer:
Denpeds on the left hand side of nagetive of the inequality sign
Write out the algebraic expression of the ratio 15 to 23 subtracted by d
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Or
Try the pic I uploaded
Please mark BRAINLEST
Giving brainliest. 7th grade math
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Where another question helpppppppp plssssss
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Answer:
41.1 = dekagrams
4.14 = hectograms
0.414 = kilograms
Answer:
I agree with the other person
Step-by-step explanation:
WHAT IS QUARTER OF 74?
Answers
Answer:
18.5
Step-by-step explanation:
I majored on Mathematics
Answer:
18.5
Step-by-step explanation:
74/4=18.5
For the equation, decide if it is always true or never true.
x − 3 = 2x − 3 − x
Answers
Answer:
true
Step-by-step explanation:
A box of granola bars has a volume of 210 cubic centimeters.
Which of the following could be the dimensions of the box?
Choose all answers that apply:
A. 15 cm long, 2 cm wide, 7 cm high
B. 14 cm long, 3 cm wide, 7 cm high
C. 7 cm long, 3 cm wide, 10 cm high
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Answer: the answer is A
Step-by-step explanation:
What is the slope of the line x= -5
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Answer:
the slope is the five
Step-by-step explanation:
Please answer question on picture above.
Answers
Answer:
d the last one i think.
Step-by-step explanation:
Hope this helps have a good day!