Using mean and outlier concepts, it is found that:
Brandee's mean was of 74.5, which doesn't really represent her abilities, as in 7 of the 8 tests she got higher grades than this, but her mean is really affected by the outlier grade of 0%, for the test she missed.Brandee's new mean will be of 85.75, which increases her final grade by 11.25 points, and is a more accurate representation of her abilities, as there is not an outlier grade.--------------------------
The mean of a data-set is the sum of all it's values divided by the number of values.In this question, the data-set is Brandee's grades, that is: 80%, 92%, 91%, ,75% ,89% ,84% ,0% and 85%.--------------------------
There are 8 grades.Thus, the mean is:
[tex]M = \frac{80 + 92 + 91 + 75 + 89 + 84 + 0 + 85}{8} = 74.5[/tex]
Brandee's mean was of 74.5, which doesn't really represent her abilities, as in 7 of the 8 tests she got higher grades than this, but her mean is really affected by the outlier grade of 0%, for the test she missed.
--------------------------
Supposing her grade on the make up test was of 90%, the new mean will be of:[tex]M = \frac{80 + 92 + 91 + 75 + 89 + 84 + 90 + 85}{8} = 85.75[/tex]
Brandee's new mean will be of 85.75, which increases her final grade by 11.25 points, and is a more accurate representation of her abilities, as there is not an outlier grade.
A similar problem is given at https://brainly.com/question/24097242
if there was one hexagon, there would be 6 sides. if there were two hexagons, there would be 12 sides. how many sides would there be if there were 18 hexagons?
Answer: if 1 contains 6 sizes the 18 contains 18x 6 sides
108 sides
Find the distance between the points.
(3,3) and (3,-5)
Answer:
0, 8
Step-by-step explanation:
To find out a distance of these numbers, you shall find out how far each number is, preferably you can use a number line for this.
N is the midpoint of AC ; AN = 4x - 7 and NC = 5x - 15
Find x=
Answer:
x = 8
Step-by-step explanation:
AN = NC,
4x - 7 = 5x -15,
-7 = x -15,
8 = x
The indoor climbing gym is a popular field trip destination. This year the senior class at High School A and the senior class at High School B both planned trips there. The senior class at High School A rented and filled 3 vans and 12 buses with 504 students. High School B rented and filled 2 vans and 4 buses with 184 students. Every van had the same number of students in it as did the buses. Find the number of students in each van and in each bus.
High school A: 3 vans + 12 buses = 504 students
High school B: 2 vans + 4 buses = 184 students
Multiply High school B by 1.5:
High school B: 3 vans + 6 buses = 276 students
Subtract High school B from High School A:
6 buses = 228 students
Divide students by buses:
Buses = 228 / 6 = 38 students per bus
Now solve for vans using high school A:
3 vans + 12(38 students per bus) = 504 students
Simplify:
3 vans + 456 students in buses = 504 students
Subtract students in buses from both sides:
3 vans = 48
Divide both sides by 3:
Vans = 16
Answer: vans = 16 students, buses = 38 students
In the diagram, m Find m
Step-by-step explanation:
where is the diagram first you have to show figure then I will find m
a) sin30°.tan60° = cos30°
Answer:
Taking LHS:sin 30⁰. tan60⁰
= 1/2 . √3
=√3/2
Now, Taking RHS:Cos 30⁰
=√3/2
LHS =RHS,
Hence proved.
Step-by-step explanation:
[tex]\sqrt{60} /\sqrt{5} (in radical form)[/tex]
[tex]2\sqrt{3}[/tex]
------------------------
Steps:
1st write out equation
[tex]\frac{\sqrt{60}}{\sqrt{5}} \\[/tex]
Second write the conjugant and multiply it.
[tex]\frac{\sqrt{60}}{\sqrt{5}} * \frac{\sqrt{5} }{\sqrt{5} }[/tex]
After multiplying you should get,
[tex]\frac{10\sqrt{3}}{5}[/tex]
now after simplifying you should get
[tex]2\sqrt{3}[/tex]
Is 4.38 a rational number?
Write as a decimal:
Explain...
1 7/12
Answer:
1 7/12 = 1.58
Step-by-step explanation:
If you divide 7 by 12, you will get 0.583... If you add 1 in the ones, that'll be
1.583... or 1.58.
What is the slope of the line that passes through the points (5, 4) and (13.25, -18) ?
A.) 83/3
B) 3/8
C) −3/8
D) 8/3
Answer:
Answer: D. 8/3
Step-by-step explanation:
Formular for slope:
[ consider points (x1, y1) and (x2, y2) ]
[tex]slope = \frac{y_{2} - y _{1} }{x _{2} - x _{1} } \\ [/tex]
x1 » 5, y1 » 4
x2 » 13.25, y2 » -18
[tex]sloe = \frac{ - 18 - 4}{13.25 - 5} \\ \\ = \frac{22}{8.25} \\ \\ { \boxed{ \boxed{slope \: = \frac{8}{3} }}}[/tex]
A shirt was originally priced at $37. The store is having a 58% off sale. How much will you pay for the shirt after the discount (not including tax)?
Answer:
$15.54
Step-by-step explanation:
Discount
(37 x 58)/100 = $21.46
Final Price
37 - 21.46 = $15.54
12−6=7+9
12
x
−
6
=
7
x
+
9
Answer:
calcula
Step-by-step explanation:
The total amount of milk in a jug and a mug is T liters. If p ml of milk is taken from the mug to make pancakes, the amount of milk left in the mug will be half as much as that in the jug. Write an expression for the amount of milk, in liters, in the jug. Evaluate the expression if T = 2.5 and p = 250.
Answer:
Apart from PB&J and oatmeal, pancakes are the most popular (and best) breakfast meal. They’re nutritious, yummy and can be served with both salty and sweet flavors. But are they easy to make? The recipe may be simple, but there are many things we need to consider.
Step-by-step explanation:
If the temperature outside was 73 degrees at 5:00 p.m., but it fell 19 degrees by 10:00 p.m., what is the temperature at 10:00 p.m.? Write an addition equation and solve.
please help
Answer:
73degrees-10degrees=63 degrees
Answer: 73 + (-19) = x, x = 73-19 = 54 degrees
Step-by-step explanation: Normally this would be a subtraction equation, but if you're looking for addition you can fix that by adding a negative number- which is the same as subtraction. In this case, the times have nothing to do with the equation itself.
b+1/4=3/4 how do i answer this
Answer:
B=2/4
Step-by-step explanation:
Its very simple. 3/4-1/4=2/4.
Answer:
[tex]b=\frac{1}{2}[/tex]
Step-by-step explanation:
Calculate the difference
[tex]b=\frac{3}{4}-\frac{1}{4}[/tex]
Solution
[tex]b=\frac{1}{2}[/tex]
Please help again. I’m so confused
Answer:
-67
Step-by-step explanation:
x=-6
-6^2+6(-6)+5
brainly pls
If the sandwich is 18.25 feet, how many sections can he cut ?
Find h(7) - 3 if h(x) = 5x + 11
Hi there!
h(x) = 5x + 11
To find h(7) - 3, we can substitute 7 for x and subtract 3:
h(7) = 5(7) + 11 - 3
Simplify:
h(7) = 35 + 11 - 3
h(7) = 43
h(x) = 5x + 11
h(7) = 5 · 7 + 11 = 35 + 11 = 46
h(7) - 3 = 46 - 3 = 43 ← the end answer
A 0.75 liter bottle of wine costs 83 euros. What is the price of the wine in dollars per
ounce? ($1 = 0.9033 euros as of November, 2016)
Answer:
$3.62
Step-by-step explanation:
since it costs $91.88 for a .75 liter bottle, a full liter would be $122.51. there's 33.814 oz in a liter so divide it by that and you get $3.62 an oz
please someone answer please I will give brainliest
Answer:
fig 1 no
Step-by-step explanation:
cause one element of domain (a) has two element. on range
Answer
fig 1 no
Step-by-step explanation:
cause one element of domain (a) has two element. on range.
Plzzz at least hit thanks ??
Please someone also explain it too.
9514 1404 393
Answer:
A √40
Step-by-step explanation:
The given radical expression can be written as ...
[tex]\displaystyle 2\sqrt{n+4}=\sqrt{2^2}\cdot\sqrt{n+4}=\sqrt{4(n+4)}=\sqrt{4n+16}[/tex]
The last two versions of this expression tell you two things:
the value under the radical must be a multiple of 4the value under the radical is greater than 16Only one answer choice meets these requirements:
√40
The mean of $10, $15, $12, $20 and $x is $13. Calculate the value of x.
Answer:
x=$8
Hope it helps
Have a great day
Which inequality represents all values of x for which the quotient below is
defined?
28(x-1) = 8x?
O A. x less than or equal to -1
B.x great than or equal to 1
O C. x> 1
O D. x<-1
You can re-write this quotient this way :
[tex]\frac{\sqrt{28(x-1)}}{\sqrt{8x^{2} }} = \sqrt{ \frac{28(x-1)}{8x^{2} } }\\[/tex]
What's inside the square root must be greater than or equal to 0, because the domain of the square root function is defined on R+ (which is [0,+∞))
In other word we must find x so that :
[tex]\frac{28(x-1)}{8x^{2}}\geq 0[/tex]
at the end we get
28(x-1) ≥ 0
28x - 28 ≥ 0
28x ≥ 28
x ≥ 1
So the answer is B, x ≥ 1
HELP DUE IN 10 MINS!
Solve for x.
7/x - 5 = 5/x + 7
[tex]\\ \sf\longmapsto \dfrac{7}{x-5}=\dfrac{5}{x+7}[/tex]
[tex]\\ \sf\longmapsto 7(x+7)=5(x-5)[/tex]
[tex]\\ \sf\longmapsto 7x+49=5x-25[/tex]
[tex]\\ \sf\longmapsto 7x-5x=-25-49[/tex]
[tex]\\ \sf\longmapsto 2x=-74[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{-74}{2}[/tex]
[tex]\\ \sf\longmapsto x=-37[/tex]
Solve one from group b pls show work and steps
HEY guys I’m back Nooooo I was so happy I didn’t have to use this but Can Someone help me do this I’ll Mark you The Brainliest Pls I need HELPPPPP!
Answer:
hey cutie
Step-by-step explanation:
Answer:
Language:
1. Circle All terms
2. 12 or 13
3. 8
4. 12 or 13
Plot:
Get a graph for this one, the number is the first parameter is x, find that x value along the x axis then after finishing it locate v, find y value along the y axis.
Solve:
1. x = 3
2. x = 1
3. x = 3
4. x = x = 5
5. x = 8
6. x = 12
7. x = 9
8. x = 4
9. x = 3
10. x = 6
11. x = 4
12. x = -12
13. x = 5
14. x = 6
15. x = 16
Step-by-step explanation:
Variables - in algebra is a symbol or a letter.
Constants - are numbers
Coefficients - are the numbers that are with variables
Use this description and circle the examples.
For the plot use a gird, or gets a coordinate plane.
Lastely for the Solve example minus or plus the constant with the coefficient and variable forum the constant outside that has been equal to. Then divide by the variable coefficient, and you will get your x value. Example:
34 - 13 = 21 / 7 thus x = 3
Select the correct way to write: Nine less than twice a number. 9n - 2
n - 9
9-n
2n - 9
Round 69581.491337 to the nearest thousand.
Answer:
7000
Step-by-step explanation:
lets start with 695
9 is the thousand
you check the number next to 9
less then 4 let it rest
more than 5 let it soar
something like that lol
anyways since 5 is next to the 9 we round up from 9 to the next number which is 10
so that changes the whole number to 7000
hope this makes sense!
The temperature outside changed from 91°F to 49°F over a period of six days. If the temperature changed by the same amount each day, what was the daily temperature change?
Answer:
Step-by-step explanation:
The temperature change in 6 days is 91 - 49 = 42 F
So the daily change is 42/6 = 7 F.
Determine whether the number is rational or irrational and round it to the nearest hundredth. - 3/7
Answer:
Yes, it's a rational number
Step-by-step explanation:
-3/7. It is a rational because. It can be written as p/q form. Where p/q are non zero number. And in decimal it would be -0.42
Answer:
-3/7 is a rational because as it can be written as p/q form where p/q are integers and q≠0.
-3/7 = -0.4285
To the nearest hundredth,
=> -0.43
