Answers
Answer:
A is the right one
Step-by-step explanation:
if not I'm sorry I'm here to help
Related Questions
Find the equation of the linear function represented by the table below in slope-intercept form. x y 1 -4 2 -7 3 -10 4 -13
Answers
Answer:
y=-3x-1
Step-by-step explanation:
A parking pass is $60 for a month or $5 for a day. At what point would it make more sense to purchase the monthly pass?
Answers
e. A set of observations has a mean of 9.0 and standard deviation 4.0. Another set of 20 observations has a mean of 10.0. Given the standard deviation of the combined set of 35 observations is 3.0, find the variance of the second set.
Answers
From the combined standard deviation, with the mean, and standard
deviation of the data sets, the required variance can be found.
[tex]\underline{\mathrm{The \ variance \ of \ the \ second \ set \ is} \ 4\dfrac{5}{28}}[/tex]Reasons:
The given data information are;
Mean of the first set of observation, [tex]\overline x_1[/tex] = 9.0
Standard deviation of the the first set, σ₁ = 4.0
Sample size of second observation, n₂ = 20
Mean of second sample, [tex]\overline x_2[/tex] = 10
Standard deviation of the combined set, σ₁₂ = 3.0
Sample size of combined set of observation, n₂ = 35
Solution:
The number of elements in the second sample, n₁ = 35 - 20 = 15
The standard deviation of the combined set is given by the formula;
[tex]{\sigma_{12}} = \mathbf{\sqrt{\dfrac{n_1 \cdot \left ( \sigma^2_{1}-d_1^2 \right ) + n_2 \cdot \left ( \sigma^2_{2}-d_2^2 \right )}{n_{1}+n_{2}}}}[/tex]
Where;
[tex]\overline x_{12} =\mathbf{\dfrac{n_1 \cdot \overline x_1 +n_2 \cdot \overline x_2 }{n_1 + n_2}}[/tex]
Therefore;
[tex]\overline x_{12} =\dfrac{15 \times 9.0 +20 \times10.0 }{15 + 20} = \dfrac{67}{7}[/tex]
d₁ = [tex]\mathbf{\overline x_{12}}[/tex] - [tex]\mathbf{\overline x_1}[/tex]
[tex]d_1 = \dfrac{67}{7} - 9.0 = \dfrac{4}{7}[/tex]
d₂ = [tex]\mathbf{\overline x_{12}}[/tex] - [tex]\mathbf{\overline x_2}[/tex]
[tex]d_2 = \dfrac{67}{7} - 10.0 = -\dfrac{3}{7}[/tex]
Therefore;
[tex]3=\sqrt{\dfrac{15 \times \left ( 4.0^2-\left(\dfrac{4}{7}\right) ^2 \right ) + 20 \cdot \left ( \sigma^2_{2}-\left(-\dfrac{3}{7}\right) ^2 \right )}{15+20}}[/tex]
Solving gives;
[tex]Variance, \ \sigma^2_2 = \mathbf{\dfrac{{117} }{28}}[/tex]
[tex]\mathrm{The \ variance \ of \ the \ second \ set, \ \sigma_2^2} = \dfrac{{117} }{28} = 4\dfrac{5}{28}[/tex]
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xy? - 2x+y when x = 2 and y=-3
What is the answer
Answers
Pls give brainliest ❤️❤️
Answer:
Step-by-step explanation:
-2x+y
-2x2+-3
-4+-3
7
Alicia has hair that is 32 inches long. She asks the hairdresser to cut off 1/4 of the total length of her hair.
How many inches does the hairdresser cut?
Answers
Answer:
hairdresser cuts 8 inches
Step-by-step explanation:
32 ÷4 =8
Help pleaseeeeeeeeeeeeeeeeee
Answers
Answer:
Step-by-step explanation:
22
Find the median of the data set.
2, 33, 23,37,45, 5,49, 27,48
A) 33
B)45
C)29.9
D)5
The answer that is in blue is mine but I’m not sure if it’s right
Answers
To find the median we have to order the numbers lowest to highest and see what’s in the middle, so;
2, 5, 23, 27, [33], 37, 45, 48, 49
Lucy brought 4 of her scarves to a secondhand store to sell. She was paid the same amount
of cash for each scarf. Before she left, Lucy spent $10.50 of her earnings on a used sweater.
She had $7.50 remaining. What was the value of each scarf?
Answers
The value of each scarf from the sales will be $4.50.
Since Lucy spent $10.50 of her earnings on a used sweater and she had $7.50 remaining, the total amount that she made from the sales will be:
= $10.50 + $7.50
= $18.00
Since she sold 4 scarves, the cost of each scarf will be:
= $18.00 / 4
= $4.50
Therefore, the value of each scarf will be $4.50.
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https://brainly.com/question/25225698
The elevation of city A is 72 feet above sea level; the elevation of city C is 24 feet above sea level. The elevation of city D is of the elevation of city C. Simplify the expression and explain why the answer is negative or positive.
Answers
Answer: d=c/4
Step-by-step explanation:
13+ 6.4+ 2.78 awnser ?
Answers
Answer:
22.28
Step-by-step explanation:
first add the decimals then the other number.
clause: if 0>1 then 0>0
Answers
Step-by-step explanation:
false
0 can't he greater then any integer.
which is closer to one, 7/8 or 8/7?
Explain without converting to decimals or using common denominators.
Answers
Do you mean one as a whole or number?
This is what I have got:
7/8 because it is only 1/8 less than a whole
Please answer #1 hurry!!! Will give brainliest
Answers
Answer:
1a) O is the steepest
1b) because it is more angled
1c) all lines are positive
Step-by-step explanation:
1a) plot the coordinates on the graph and find the steepest
Answer:
1a) O) y = 5x
1b) The slope value is greater than M and N
1c) They all meet on the point of (0,0) because there is no b value and are all positive slopes.
What is an equation of the line that passes through the point (-2,7)(−2,7) and is perpendicular to the line x-4y=24x−4y=24?
Answers
9514 1404 393
Answer:
4x +y = -1
Step-by-step explanation:
The equation of the perpendicular line can be written by ...
swapping the x- and y-coefficients, negating one of themchoosing a new constant so the line goes through the given point.The x- and y-coefficients in the given equation are 1 and -4, respectively. Since we want the leading coefficient positive, it is convenient to use 4 and 1 as the coefficients in the new equation. The constant can be found by substituting (x, y) = (-2, 7) to see what it is.
4x +y = 4(-2) +7 = -1
The desired perpendicular line has an equation ...
4x +y = -1
B
Acellus
16 m
С
А
20 m
Find the area of AABC.
[?] m
Enter
Answers
Answer:
area of triangle = 1/2×base×height
=1/2×20m×6m
= 20m×6m=120square metre
If I want to buy a pair of shoes that cost 86.71 and 17% sales tax is added approximately how much are the shoes?
Answers
Answer:
$101.45
Step-by-step explanation:
change 17% to .17 then multiply it by 86.71=14.74 then add that to 86.71 and you get your answer $101.45
What are the characteristics of the graph of the inequality x < 4.5?
The ray will move to the left.
It will use a closed circle.
It will use an open circle.
The ray will move to the right.
Answers
Answer:
see explanation
Step-by-step explanation:
Given x < 5
The graph will have an open circle at 5 indicating that x is not equal to 5, which would be a closed circle.
The ray will move to the left since values less than 5 are to the left of 5
Answer:Please see explanation
Step-by-step explanation:
What are the characteristics of the graph of the inequality x < 4.5?
The answer is The ray will move to the left.
It will use an open circle.
Please votes me 5 stars,1 heart,and mark as brainliest. Thanks
What are the similarities and differences between a histogram and a frequency table?
Answers
Answer:
A frequency distribution table lists the data values, as well as the number of times each value appears in the data set. A histogram is a display that indicates the frequency of specified ranges of continuous data values on a graph in the form of immediately adjacent bars.
Step-by-step explanation:
find perimeter and area
Answers
Answer:which one
Step-by-step explanation: which one 50
I NEED A 100% ACCURATE ANSWER FOR THIS ASAP NO LINKS !!!
Solve the following: 15+6h=45+8h
1: h= 28
2: h= -30
3: h= 15
4: h= -15
Answers
Step-by-step explanation:
→ 15 + 6h = 45 + 8h
→ -8h + 6h = 45 - 15
→ -2h = 30
→ h = 30/-2
→ h = -15
hope this answer helps you dear...take care and may u have a great day ahead!
4
Step by step explanation:
15+6h=45+8h
15+6h-8h=45
6h-8h=45-15
-2h=45-15
-2h=30
h=-15
solve pls brainliest
Answers
Answer:
v=25.6
Step-by-step explanation:
12.8 x 2 = 25.6 therefore you can check by dividing by 2
Answer:
V=25.6
Step-by-step explanation:
[tex] \frac{v}{2} = 12.8[/tex]
Looking at the two, 7[tex]a^{4} b^{2} c^{2} and14abc^{6}[/tex]
what is the GCF of these
Answers
Answer:
[tex]7abc^{2}[/tex]
Step-by-step explanation:
Evaluate (625) power of 0.16 × (625) power of 0.09
Answers
Answer:
5Step-by-step explanation:
(625) power of 0.16 × (625) power of 0.09
[tex]625^{0.16}\times625^{0.09}=625^{0.16+0.09}=625^{0.25}=(5^4)^{0.25}=5^{4*0.25}=5^1=5[/tex]help me guys I need help ?
Answers
Answer:
The answer is D. Hope this helps
A toy store marks down all of its items by 15%. If a package of pokemon cards costs $4.99, what is the new price with the markdown? Round to the nearest cent
Answers
Answer:
$4.24
Step-by-step explanation:
100%-15%=85%
85/100x4.99=4.2415
4.2415 rounded off to nearest cent =4.24
Hope this helps! Thanks.
What equation is graphed?
Answers
2. Kirk is reading a science fiction novel. After his first 20 minutes of reading, he sees that he's read 32 pages of
the book. If the book is 375 pages long, which of the following is closest to the total time it will take him to
finish the book?
Answers
375 pages / 32 = 11.7
11.7 x 20mins = 3.9 hours so 234 minutes
It will takes him 234 minutes to read 375 pages
The total time that should be taken by him to finish the book is 3.9 hours.
Given that,
There are 20 minutes of reading for 32 pages of the book.Now there are 375 pages.Based on the above information, the time taken should be
[tex]= 375 \times 20 \div 32[/tex]
= 234.375 minutes
Now in hours it should be
[tex]= 234.375 \div 60[/tex]
= 3.9 hours
Therefore we can conclude that the total time that should be taken by him to finish the book is 3.9 hours.
Learn more: brainly.com/question/22271063
Can someone please help me?
Answers
The derivative of:
[tex]f(x) = ( {3x}^{2} + 2x - 1) 6[/tex]
is....
[tex]6( {3x}^{2} + 2x - 1)5(6x + 2)[/tex]
Hope this helped you- have a good day bro cya)
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answers
Answer:
I believe the correct option would be C, 2p-4. I hope this helps you! :)
Answer:
C. 2p-4
Step-by-step explanation:
Can someone pls help me plsss
Answers
Answer:
the first one
Step-by-step explanation:
1/2 and 1/5 common denominator is 10