Solve for x in the equation x2 + 4x-4-8.
O x= -6 or x = 2
O x=-2+2V2
O x = -2 or x = 6
O x=2+25
Answers
Answer:
O x = - 6 or x = 2
Step-by-step explanation:
x² + 4x - 4 - 8 = 0
x² + 4x - 12 = 0
x² + 6x - 2x - 12 = 0
x(x + 6)x - 2(x + 6) = 0
(x + 6) (x - 2) = 0
x + 6 = 0 or x - 2 = 0
x = - 6 or x = 2
Thus, x = - 6 or x = 2
-TheUnknownScientist
Related Questions
A guidance counselor wants to determine if there is a relationship between a student’s number of absences, x, and their grade point average (GPA), y. He collects data for 15 randomly selected students and determines the value for r2 was 31%.
Which of the following gives the best interpretation of this value?
31% of the variation in the number of absences is accounted for by the linear relationship with GPA.
69% of the variation in the number of absences is accounted for by the linear relationship with GPA.
31% of the variation in the GPA is accounted for by the linear relationship with number of absences.
56% of the variation in the GPA is accounted for by the linear relationship with number of absences.
Answers
Answer:
C: 31% of the variation in the GPA is accounted for by the linear relationship with number of absences.
Step-by-step explanation:
right on edge
The correct interpretation of the value of r² in this context is 31% of the variation in the GPA is accounted for by the linear relationship with the number of absences.
The interpretation of the value of r² in the context of the relationship between a student's number of absences (x) and their grade point average (GPA) (y).
First, what is r²? The coefficient of determination, denoted as r², is a statistical measure that represents the proportion of the variance (variation) in the dependent variable (GPA) .
That can be explained or predicted by the independent variable (number of absences) in a linear regression model.
Here, the value of r² is 31%. This means that 31% of the total variability in the GPA scores of the 15 randomly selected students can be explained by the linear relationship with the number of absences.
31% of the differences in GPAs among the students can be attributed to the differences in their number of absences.
The remaining percentage (100% - 31% = 69%) represents the unexplained or residual variation in the GPA scores.
This unexplained variation could be due to other factors not considered in the linear relationship, such as individual study habits, natural academic ability,
or other variables that were not part of the data analysis.
The interpretation is that 31% of the variation in the GPA scores can be accounted for by the linear relationship with the number of absences, while 69% of the variation remains unexplained by this relationship.
learn more about value here
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obtain the derivative of y=2x^2
Answers
Answer:
[tex]\displaystyle y' = 4x[/tex]
General Formulas and Concepts:
Calculus
Differentiation
DerivativesDerivative NotationDerivative Property [Multiplied Constant]: [tex]\displaystyle \frac{d}{dx} [cf(x)] = c \cdot f'(x)[/tex]
Basic Power Rule:
f(x) = cxⁿf’(x) = c·nxⁿ⁻¹Step-by-step explanation:
Step 1: Define
Identify
[tex]\displaystyle y = 2x^2[/tex]
Step 2: Differentiate
Derivative Property [Multiplied Constant]: [tex]\displaystyle y' = 2(x^2)'[/tex]Basic Power Rule: [tex]\displaystyle y' = 4x[/tex]Topic: AP Calculus AB/BC (Calculus I/I + II)
Unit: Differentiation
What is the solution for the equation 4x – 10 = 2x?
Answers
Answer:
5x
Step-by-step explanation:
subtract 4x fromboth sides
4x-10=2x
-4x -4x
divide both sides by -2
-10=-2x
-10/-2=-2x/-2
5=x
Tell me if I’m correct or incorrect
A
A
A
Dd
D
D
S
S
E
We
We
We
E
E
S
S
S
S
S
S
S
Das
S
S
S
S
S
S
S
S
S
Which number is not in scientific notation?
3.2 ⋅ 10–2
15 ⋅ 1020
8 ⋅ 1013
1.42 ⋅ 10–9
Answers
Answer:
The correct answer should be B
Step-by-step explanation:
If this helped please mark brainliest!
find the images of the following under thr reflection aboit x_axies a(2,_3)
Answers
Answer:
that not a full question I cant answer that.
PLS HELP I NEED IT
I WILL AWARD BRANLIEST
Answers
Every triangle has a total of 180 (when you add all three angles together), and the same would be for a straight angle, or two angles formed by am angle bisector (DC). 180-33=147, so the top part of C would be 147, which isn't necessarily needed, but that'd be how to solve that. A+B+C=180. A+2x+C=180. A would be 33 because AB and DC (segments) are parallel, and the segment bisector AE is a straight line, so 33+2x+C=180. 180-33=147/2=73.5, if I did that correctly.
Help plzzzzzzzzzzzzzz
Answers
Answer:
side HA and side AT
Step-by-step explanation:
What is the slope of the line through (-10,1) and (0,-4) ?
Answers
Answer:
-5/10 or -1/2
Step-by-step explanation:
Simplify completely 4m^3 over 3m^2n X 9n^2 over 30m^2n^2
Answers
Answer:
The answer is 2/405Xmn with an exponent of 5 at the end
Last year, Ivy's pant measured 12 inches. This year, her plant is 75% taller.
How many inches did her plant grow?
Answers
Answer:
The plant grew 9 more inches since last year.
Step-by-step explanation:
75% of 12 is 9 and the initial plant growth was 12 inches.
So, the plant grew 9 more inches since last year.
The plant is now 21 inches.
Answer:
9
Step-by-step explanation:
Divide 12 by 4 to get 25% = 3
25% x 3 = 75%
3 x 3 = 9
i need help with math rlly bad
Answers
Step-by-step explanation:
what's the question sweetie?
In the slope-intercept form, which variable
represents the slope/measure of change?
Answers
please help asap!! for finals!! semi easy question! will mark brainliest!! not multiple choice! tysm !!
Answers
Answer: 42 gallons
Step-by-step explanation:
1,260/180 = 7
Per 180 mile = 6 gallon
7x6=42
What is the next term of the arithmetic sequence? 1, 3, 5, 7, 9
Answers
Answer:
In this case, adding 2 to the previous term in the sequence gives the next term. In other words, an=a1+d(n−1) a n = a 1 + d ( n - 1 ) . This is the formula of an arithmetic sequence.
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
assuming they keep continuing on as odd the next number would be 11
Solve the equation.
6W + 5y = 2z solve for y
Pls help!!!
Answers
Answer:
Y = 2/5z-6/5w
Step-by-step explanation:
6W + 5y = 2z
1. Subtract 6W from both sides
2. 5y = 2z-6W
3. Divide both sides by 5
4. y = 2/5z-6/5W
PLEASE HELP ME I NEED THE ANSWER ASAP THANK YOU SO MUCH!!
Answers
dark blue is the answer
Help, ima super dumb
Answers
Given the triangle above, solve for x.
Answers
Answer:
im not 100 percent sure but i think its x=71
Answer:
Step-by-step explanation:
The problem with this question would be resolved in a New York second if people learned what an exterior angle was. x is an exterior angle. Exterior angles have their own set of properties. One of them is that they are the sum of the two interior angles not supplementary to the given exterior angle.
In the diagram above the supplement to x has no marking. It is not an exterior angle. x is the exterior angle.
A triangle has Interior sums of 180o. Everyone here seems to understand that. What is not understood is the properties of x and the other two exterior angles. Exterior angles polygons of any number of sides have exterior angles that add up to 360 degrees. The 360 degrees does not indicate that they are not circles.
So the answer to this question is that x = 64 + 45 = 109. If you put anything else in, you will get it wrong.
This question checks to see if you understand the difference between an exterior angle and an interior angle. 71 is not the answer. It is not even the second best answer. It is just the third interior angle.
A package of golf balls costs $22 and a package of golf tees costs $4. The expression $22b + $4t represents the total cost for, b, packages of golf balls and, t, packages of golf tees. Find the total cost of 2 packages of golf balls and 3 packages of golf tees
Answers
Answer: $56
Step-by-step explanation: $22(2)+$4(3) = $56
What is the slope of the linear function represented in
the table?
Answers
Answer: 1/7
Step-by-step explanation: The points create a posotive line so the answer has to be posotive. You then have to look at the rise over run. (0,1) is 1 unit higher than (-7,0) and the run is the ditance between the 2 x exvalues. 7. Rise/run = 1/7
If
x
=
5
and
y
=
4
, evaluate the following expression:
3
x
²
+
3
x
y
+
y
²
Answers
Step-by-step explanation:
3x²+3xy+y²
3×5²+3×5×4+4²
3×25+60+16
75+60+16
151
hope it help u
can u show horozontally
Geometry...Please help as soon as possible please and Thank you!!!
Answers
Answer:
Step-by-step explanation:
Statment1. BD bisects ∠ABC
Reason1. Given
Statment 2. ∠ABD≅∠DBC (A)
Reason2. Definition of angle bisector
Statment 3. BD≅BD (S)
Reason3. Reflexive propriety
Statement 4. ∠BDA≅∠BDC (A)
Reason 4. Given
Statement 5 ΔABD≅ΔCDB
Reason 5. ASA theorem of congruency
Factorise
a² - 144
Please factorise this
Answers
Answer:
a² ÷a = a
144 ÷ 2= 12
(a - 12) (a + 12)
Answer:
[tex]\bf\pink{(a-12)\times (a+12)}[/tex]Step-by-step explanation:
Given Expression :-[tex]\bf\blue{a^{2} - 144}[/tex]Steps to factorise :-[tex]\longrightarrow\:\:\bf\red{a^{2} - 144}[/tex]
Write the number in the exponential form with an exponent of 2[tex]\longrightarrow\:\:\bf\orange{a^{2}-12^{2}}[/tex]
Using a²-b² = (a-b)(a+b), factor the expression.[tex]\longrightarrow\:\:\bf\purple{(a-12)\times (a+12)}[/tex]
(Refer the attachment for graph representation)
Graph Details :-[tex]\bigstar\:\:\bf{y=a^{2}-144}[/tex]
[tex]\rm{ Roots \:\:(-12,\:0)\:(12,\:0)}[/tex][tex]\rm{Domain \:\:a \in {\mathbb{R}}}[/tex][tex]\rm{Range \:\:y\in \bigg( -144,\:+\infty \bigg) }[/tex][tex]\rm{Minimum \:\: (0,\:-144)}[/tex][tex]\rm{Vertical\: Intercept\:\:(0,\:-144)}[/tex]Solve the system of equations by substitution.
X + y = 21
y = 6x
Answers
Answer:
x = 3
y = 18
Step-by-step explanation:
you replace y with 6x
x + 6x = 21
combine like terms
7x = 21
divide both sides by seven
x = 3
then you plyg 3 into the other equation
y = 6(3)
y= 18
Answer:
x=3
y=18
Step-by-step explanation:
x+y=21..........equation 1
or,x=21-y......equation 2
y=6x.......equation3
substituting the value of x in equation 3
y=6(21-y)
or,y=126-6y
or,7y=126
y=18
again,substituting the value of y in equation 2
x=21-y
or,x=21-18
x=3
x=3,y=18
Hi, thanks to the person that is answering all my questions! the reason im doing this is my teacher said if I finish all my moby max she gonna replace all my low test grades
Answers
Answer:
não consigui entender
question is in picture
Answers
Answer:
answer would be -6 :)
Step-by-step explanation:
Answer:
-6
To check answer multiply -5 x 6
PLEASE HELP THIS IS DUE AT 11!!!!!!!!!!! (-3v+1)+7-(6v+6)=-37
A 4
B -2
C 2
D 0
Answers
Answer:
v = 13/3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define
(-3v + 1) + 7 - (6v + 6) = -37
Step 2: Solve for v
Distribute negative: -3v + 1 + 7 - 6v - 6 = -37Combine like terms: -9v + 2 = -37Isolate v term: -9v = -39Isolate v: v = 13/3
Assume that it is equally likely for a child to be born a boy or a girl and that the Lin family is planning on having 2 children. How many elements are
there in the samples space for the genders of the two children?
Answers
Answer: It depends on if the girl genes are dominant or if the boy genes are recessive. If the girl genes are more dominant then Lin is probably going to have more girls than boys.
Step-by-step explanation: Listen I haven't gotten the question yet so I don't know the answer
There are 72 female performers in a dance recital. The ratio of men to women is 2:9. How many men are in the dance recital?
Answers
Answer:
48
Step-by-step explanation:
72 ÷ 3 = 24
so you know that the men is 24 × 2 = 48
48:72 = 2:3
i looked it up and it says x=4 and theres 12 men but i dont think that helps im so sorry i couldnt find anything:(
0.26÷1.56 ...........................................................................................
Answers
Answer:the answer is 0.16 in the calculator its 0.166666666667 but just take the first 3 numbers at thats your answer.
Step-by-step explanation: