Because of the test she did not take, Brandee scored a 9.75% lower average than her average score once her teacher allowed her to take the test again.
The average obtained once Brandee's teacher allowed him to present the missing test is much more accurate regarding Brandee's ability, this can be identified since it went from an average of 85.14% with 7 scores, to one of 84.25% with 8 scores, different from the average of 74.5% obtained thanks to that score of 0.
BRANDEE'S AVERAGE CALCULATION.
In the exercise, you can see Brandee's scores are: 80%, 92%, 91%, 75%, 89%, 84%, 0%, and 85%, if you calculate the average in that case:
First Brandee's average = (80 + 92 + 91 + 75 + 89 + 84 + 0 + 85) / 8First Brandee's average = 74.5But when Ms. Juarez allowed her to make up the missed test, in which she got 78%, The average increased too much:
Second Brandee's average = (80 + 92 + 91 + 75 + 89 + 84 + 78 + 85) / 8Second Brandee's average = 84.25As can be identified, most of Brandee's scores are above 80%, therefore, it is considered more accurate that her average is above this value, that is, it is an average that would represent much better the ability of Brandee.
You can see another exercise about average in the next link: https://brainly.com/question/20763190?referrer=searchResults
find the value of x of parallelogram fast
In this figure to find value of x ,length of AC should be given...I dont see the length of AC in the picture..
An unknown polynomial is added to the expression -3x^3+2x-5 and the resulting sum is 4x^3+7x^2-3. what is the unknown polynomial?
Answer:
7x³ + 7x² + 2x - 8
Step-by-step explanation:
Let the unknown polynomial be a
a + -3x³ + 2x - 5 = 4x³ + 7x² - 3
a = 4x³ + 7x² - 3 - (-3x³ + 2x - 5)
a = 4x³ + 7x² - 3 + 3x³ + 2x - 5
a = 7x³ + 7x² + 2x - 8
Given the function f, find
f(−3), f(3), f(−a), −f(a), f(a + h).
f(x) = 2x − 7
f(−3) =
f(3) =
f(−a) =
−f(a) =
f(a + h) =
Answer:
Step-by-step explanation:
f(x) =2x - 7
f( - 3) = 2( - 3) - 7 = - 13
f(3) = 2(3) - 7 = - 1
f(a) = 2a - 7
- f(a) = - (2a - 7) = 7 - 2a
f(a + h) = 2(a + h) - 7 = 2a + 2h - 7
Answer:
f(x) =2x - 7
f( - 3) = 2( - 3) - 7 = - 13
f(3) = 2(3) - 7 = - 1
f(a) = 2a - 7
- f(a) = - (2a - 7) = 7 - 2a
f(a + h) = 2(a + h) - 7 = 2a + 2h - 7
Step-by-step explanation:
In an experiment, what happens to the independent variable?
Question 6 options:
It remains the same.
It is the control.
It is purposely changed or manipulated.
It is the hypothesis
Step-by-step explanation:
It is purposely changed or manipulated.
Factor the given polynomial completely \. If the polynomial cannot be factored, say that is prime. y^4+10y^3+16y^2
A.y^4+10y^3+16y^2=_____
B. The polynomial is prime
Answer:
y^4+10Y^3+16y^2=0
y^2(y^2+10y^1+16y^0)=0
y^2+10y+16=0
on doing. factors of 10y we get 8y+2y
y^2+8y+2y+16=0
y(y+8)+2(y+8)=0
(y+2)(y+8)=0
1.y+8=0
y=-8
2.y+2=0
y=-2
hence y =(-8,-2)
What factors of -27 have the sum of 6
Answer:
9 and -3
Step-by-step explanation:
9 and -3 are both factors of -27 since they can be multiply each other to get -27. Also, they both add up to 6.
The factors of -27 that sum up to 6 are 9 and -3
How to determine the factors of -27 that sum up to 6From the question, we have the following parameters that can be used in our computation:
Factors = -27
Sum = 6
Let the numbers be x and y
So, we have
xy = -27
x + y = 6
Let x be 9 and y be 3
So, we have
9 * -3 = -27
9 - 3 = 6
Hence, the numbers are 9 and -3
Read more about expression at
brainly.com/question/30492964
#SPJ6
Write the equation of the line that passes through the points(-3,6) and (4,1). In point slope form
Answer:
y=10x-14
Step-by-step explanation:
From (4,1) on a graph, you would rise ten and then run to the left 14 times. Remember the rise/run and follow it. What I'm telling is rise you reach (4,6), then count across to (-3,6) to get your answer. You can use demos graphing calculator to help you better or make your own graph.
I hope this helped you! Comment below if you are confused or send a private message. ;)
The answer to the question
Answer:
5383 4983
i dont know
Step-by-step explanation:
Point S is on line segment RT. Given ST = 3x-8, RT = 4x, and RS = 4x-7, determine the numerical length of RT.
Answer:
20.
Step-by-step explanation:
1) according to the condition RT=ST+RS;
2) if RT=4x, ST=3x-8; RS=4x-7, then it is possible to re-write the equation as:
4x=(3x-8)+(4x-7);
3) if to solve this equation, then:
4x=7x-15; ⇔ 3x=15; ⇔ x=5.
4) if x=5, then the length of RT is:
RT=4x=20.
3-(x-1)=-1-(5-x) pls help
Answer:
[tex] - 3(x - 1) = - 1(5 - x) \\ \\ 3 - x + 1 = - 5 + x \\ \\ - x - x = - 5 - 3 - 1 \\ \\ - 2x = - 5 - 3 - 1 \\ \\ - 2x = - 9 \\ \\ x = \frac{ - 9}{ - 2} \\ \\ x = 4.5[/tex]
[tex]3 - (x - 1) = - 1 - (5 - x)[/tex]
[tex]3 - x + 1 = - 1 - 5 + x[/tex]
[tex](3 + 1) - x = ( - 1 - 5) + x[/tex]
[tex]4 - x = - 6 + x[/tex]
[tex]4 + 6 = x + x[/tex]
[tex]10 = 2x[/tex]
[tex] \frac{10}{2} = x[/tex]
[tex]5 = x[/tex]
Which of the following is equal to the rational expression when x ≠ -1 or -7?
(X+1)(x-1)
——————
(X+7)(x+1)
A. x+1
——
x+7
B. x+7
———
x-1
C. x-1
——
x+7
9514 1404 393
Answer:
C. (x -1)/(x +7)
Step-by-step explanation:
The factor (x +1) in the numerator cancels the same factor in the denominator, leaving the ratio (x -1)/(x +7). This matches choice C.
_____
Additional comment
Even though (x+1)/(x+1) = 1 and can be removed from the expression, the fact that it is undefined at x=-1 means the reduced ratio (x-1)/(x+7) is only a valid representation of the original ratio when x≠-1. The factor (x+1) may be gone, but the domain restriction associated with it remains.
Giải bài toán qui hoạch tuyến tính:
f(x) = 2x1 − 2x2 + x3 (Max)
x1 + 2x2 ≤ 3
2x1 − 3x2 + x3 ≤ 2
x1, x2, x3 ≥ 0.
i now the answer and the answer is o
In the diagram, CE=12 units and BE=5 units.
Line l is a perpendicular bisector of line segment A C. It intersects line segment A C at point B. Line l also contains points D and E. Line segments A B and B C are the same length.
Based on the given information, what is AE?
2 units
7 units
12 units
17 units
Answer:
AE = CE —> identical
So ; AE= 12 units
I hope I helped you^_^
Answer:
12 units
Step-by-step explanation:
edge2020
Proving functions are inverses of each other: are these inverses of each other band can you explain why or why not.
9514 1404 393
Answer:
a) J(K(x)) = x; K(J(x)) = x; functions are inverses
b) f(g(x)) = 8 -x; g(f(x)) = -x; functions are not inverses
c) f(x) = 4 -x; f^-1(x) = 4 -x. g(x) = x -4; g^-1(x) = x +4
Step-by-step explanation:
a) Substitute for the function argument in the usual way. If the functions are inverses, their composite is the identity function.
J(K(x)) = J(1/3x -2) = 3(1/3x -2) +6 = x -6 +6 = x . . . . functions are inverses
K(J(x)) = K(3x +6) = 1/3(3x +6) -2 = x +2 -2 = x . . . . functions are inverses
__
b) f(g(x)) = f(x -4) = 4 -(x -4) = 4 -x +4 = 8 -x . . . . functions are not inverses
g(f(x)) = g(4 -x) = (4 -x) -4 = -x . . . . functions are not inverses
__
c) To find the inverse function for y = f(x), solve x = f(y).
The inverse of f(x) = 4 -x is ...
x = f(y) = 4 -y
y = 4 -x . . . . . add y-x to both sides
f^-1(x) = 4 -x
and for g(x) = x -4, the inverse is ...
x = g(y) = y -4
x +4 = y
g^-1(x) = x +4
Why is it helpful to use GCF and LCM?
Step-by-step explanation:
So will there ever be a time when we will need to use both the GCF, Greatest Common Factor and LCM, Least Common Multiple?
For instance, we may need to use the LCM to help us add two fractions, and also the GCF to simplify our result.
What is the unit rate of 825 students and 55 teachers
Answer: Ratio = 1/15
Step-by-step explanation: There are 15 students for every teacher. Simplifying 55/825 makes 1/15. Brainliest please?
1 a Copy and complete to begin to solve the
equation.
4x - 3=2x+7
4x - 3-0=2x + 7-O
Ox - 3=0
Answer:
0
Step-by-step explanation:
Can someone help me (Geometry)
Answer:
sum of angles on a straight line =180 degrees
DAB=180-36-35=109 degrees
least to greatest 7.0, 0.07, 0.7, 0.077
Step-by-step explanation:
1. 0.07 is the lowest like 7 cents
2. 0.077 is the second one and closer to 8 cents
3. 0.7 the 3rd and like 70 cents
4. 7.0 the greatest like 7 dollars
just a little help and if you answer can you explain how you got it so I can study your method please!!
Answer:
4
Step-by-step explanation:
you can start with the division -24 ÷ -8 = 3
(-) ÷ (-) = (+)
then multiply 3 × 4 = 12
then divide it by 3
12÷ 3 which equals 12 × (1/3) = 4
Find the surface area
Unit 1: geometry basics homework 2: segment addition postulate I need the answers for this worksheet please and thank you
The answers to the segment addition problems are :
LN = 37MN = 23 EF = 58The required worksheet is attached below :
A segment is simply the shortest distance between two points, For a line segment, it is the line which connects two points.
Given that :
LM = 22 ; MN = 15
The segment LN is defined as :
LN = LM + MN
LN = 22 + 15
LN = 37
2.)
LN = 54
LN = 54 LM = 31
The line segment, LN equals :
LN = LM + MN
54 = 31 + MN
MN = 54 - 31
MN = 23
3.)
DF = 9x - 39
DE = 47
EF = 3x + 10
The line segment, DF equals ;
DF = DE + EF
9x - 39 = 47 + (3x + 10)
9x - 39 = 47 + 3x + 10
9x - 3x = 47 + 10 + 39
6x = 96
x = 96 / 6
x = 16
Hence,
EF = 3x + 10
EF = 3(16) + 10
EF = 48 + 10
EF = 58
Learn more on segment addition at : https://brainly.com/question/24267631
Please Help thanks!
Points A, B, and C are collinear and B lies between A and C. If AC = 48, AB = 2x + 2, and BC = 3x + 6, what is BC?
BC=
On a number line, suppose point E has a coordinate of −3,and EG=8.What are the possible coordinates of point G?
The possible coordinates for G are?
Please help!
The measure of side BC is 30 units.
Given:
Points A, B, and C are collinear and B lies between A and C.
[tex]AC=48[/tex]
[tex]AB=2x+2[/tex]
[tex]BC=3x+6[/tex]
To find:
The value of BC.
Solution:
Points A, B, and C are collinear and B lies between A and C. So,
[tex]AB+BC=AC[/tex] [Segment addition postulate]
[tex](2x+2)+(3x+6)=48[/tex]
[tex]5x+8=48[/tex]
Subtract 8 from both sides.
[tex]5x=48-8[/tex]
[tex]5x=40[/tex]
Divide both sides by 5.
[tex]\dfrac{5x}{5}=\dfrac{40}{5}[/tex]
[tex]x=8[/tex]
Now,
[tex]BC=3(8)+6[/tex]
[tex]BC=24+6[/tex]
[tex]BC=30[/tex]
Therefore, the value of BC is 30.
--------------------------------------------------------------------------------------------------------------
The possible coordinates for G are -11 and 5.
Given:
On a number line, suppose point E has a coordinate of [tex]-3[/tex], and [tex]EG=8[/tex].
To find:
The possible coordinates of point G.
Solution:
Either point G lies 8 units left of point E or 8 units right of point E.
[tex]G=-3-8[/tex]
[tex]G=-11[/tex]
And
[tex]G=-3+8[/tex]
[tex]G=5[/tex]
Therefore, the possible coordinates for G are -11 and 5.
Learn more:
https://brainly.com/question/13071707
Help me Pleaseeee!!!
Answer:
A.
Step-by-step explanation:
Please explain/show work. P.s. it won’t let me uncheck a problem, so D isn’t necessarily the answer.
Answer:
D) [tex]\displaystyle\frac{1}{4} x^2[/tex]
Step-by-step explanation:
Hi there!
The correct answer is D.
[tex]\displaystyle\frac{1}{4} x^2[/tex] is the same as [tex]\displaystyle\frac{1}{4}* x^2[/tex], which is the same as [tex]\displaystyle \frac{x^2}{4}[/tex].
I hope this helps!
2. Given 90 ml of hydrogen gas collected at 27c,
how milliliters will the hydrogen occupy
ase
MANY
at 42°C ?
Answer:
94.5 ml
Step-by-step explanation:
it's the relation of PV = nRT
as pressure , moles and R are held constant
V1/V2 = T1/T2
where V is volume and T is temperature in "Kelvin"
V2 = V1 * T2 / T1
V2 = 90 * 315 / 300
Which of the following is the correct way to express 320 in scientific notation?
A. 3.2 x 10²
B. 32.0 x 10²
C. 3.2 x 10³
D. 0.32 x 10²
Answer:
Hi, there!
Option A. 3.2 x 10²
Step-by-step explanation:
320 written in scientific notation is 3.2 × 102.
Convert 32 kilometers per hour to miles per day. (3.28 feet 1 meter)
Answer:
477.09 mi/da
Step-by-step explanation:
If student must use conversion given, 3.28ft = 1m, then the following works:
32km/hr = ______mi/da 1 day = 24 hrs, 1m=3.28ft, 1km=1000m,1mi=5280ft
32km/hr x 24hr/day x 1000m/1km x 3.28ft/1m x 1mi/5280ft = 477.09mi/da
If student can use 1km = 0.62mi, some steps can be skipped.
I need help with these
Answer:
1) C (9)
2) A (8)
3) A (12)
4) C (0)
5) C (9)
6) B (10)
7) D (12) | x = 11
8) B (11) | x = 12
668,126,826
- 424,102,320
Answer:
244,024,506
Step-by-step explanation:
have a great day :)
