Answer:
[tex]x=\frac{-9\pm3\sqrt{5} }{2}[/tex]
Step-by-step explanation:
Standard Form: ax² + bx + c = 0
Quadratic Formula: [tex]x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}[/tex]
Step 1: Write equation
x² + 9x + 9 = 0
Since we cannot factor the expression, we will have to use the quadratic formula.
Step 2: Define
a = 1
b = 9
c = 9
Step 3: Solve for x
Substitute: [tex]x=\frac{-9\pm\sqrt{9^2-4(1)(9)} }{2(1)}[/tex]Evaluate: [tex]x=\frac{-9\pm\sqrt{81-36} }{2}[/tex]Evaluate: [tex]x=\frac{-9\pm\sqrt{45} }{2}[/tex]Simplify: [tex]x=\frac{-9\pm3\sqrt{5} }{2}[/tex]Answer:
X1= -9-3[tex]\sqrt5[/tex] over 2 X2= -9+3[tex]\sqrt5[/tex] over 2 (draw a line under the -9 to the 5
and put a 2 under like a fraction
i cant get the line all the way
across on here sorry
Step by step explanation:
x= -9 [tex]\sqrt9^2 -4x1x9[/tex] Over (draw a line under that) Put all that under sq root
2 x 1 also
x= -9+ [tex]\sqrt81-36[/tex] Over 2
2
x= -9 + [tex]\sqrt45[/tex] Over 2
2
x=-9 +3[tex]\sqrt5[/tex] Over 2
2
separate solutions gives your answer above
Also ......note ..... put a line under each + sign ok I worked hard getting this all down best i can
Which of the following is the best example of a system of equations that should be solved by the elimination method?
Question 2 options:
8x + 3y = 2
5x + 8y = -11
2x - 4y = -16
y = 5x + 13
-8x - 9y = -17
16x - 4y = 12
12x + 7y = -17
9x + 11y = -7
Answer:the answer -8x-9y=-17
16x-4y=12
Step-by-step explanation:
divide 16x-4y=12 with 2
8x-2y=12
Then add the equations
-8x-9y=-17
8x-2y=12
0-11y=-23
You can’t do this with the other equations provided.
What is the value of x?
Answer:
x = 60 degrees
Step-by-step explanation:
Rewrite the simplest terms : 6(6r+8)-2r ?
Answer:
2 • (r + 1) • (r - 4)
Step-by-step explanation:
Solve the inequality.
8(x – 2) + 9 < 3(x – 1) + 5x
Answer:
infinate solution
Step-by-step explanation:
8(x - 2) + 9 < 3(x - 1) + 5x
Distribute
8x - 16 + 9 < 3x - 3 + 5x
Combine like terms
8x - 7 < 8x - 3
Subtract 8x to both sides
-7 < -3
Since -7 is less than -3, there are many infinitely solutions to this equation.
please help me with these
Answer:
1: 128
2: 11
3: 6
~~~~~~~~~~~~~~~~~~~~~~
I'm sure that I did it right make sure to double check tho!
All you need to do is plug the numbers into their variables :)
Identify the set of numbers that best describes the situation. Explain your choice. The weight of a person in pounds.
Answer:
Rational number
jenny was shopping and found a bag that was marked with a discount of 1/3 off if the original cost of the bag was 80 how much will jenny pay
Answer:
53.33
Step-by-step explanation:
1/3 of it is 26.66 continuing so it's rounded up
therefore, 80-26.67 is 53.33
convert 7.25 kL to mL
A college accepted new applicants, of whom 56% were male and 44% were female. The board of directors was not pleased that males were being accepted at a greater percentage than females. A private company investigated and found each department accepted a greater percentage of females over males. What may make this claim possible?
Answer:
Simson paradox
Step-by-step explanation:
In Simpson paradox, the trend that appears in the combined data reverses or disappears in the results of the several individual groups that make up the combined data
In the question, given that the percentage of female applicants accepted = 44% while the percentage of male applicants = 56%, and that the private company found that each department accepted a greater percentage of females over males
The above claim can occur when there is a confounding variable, which is the number of applications from female or male
The percentage used or the data provided to by the private company in each department are percentage in proportion of number of accepted females to total number of female applicants and percentage in proportion of number of accepted males to total number of male applicants, whereby, when there are fewer number of female applicants to each department and more were accepted, their percentage will be larger than the percentage of the male applications that have a lower percentage but larger number of applications, such that the accepted male applicants still outnumber the female when that total number of applications are considered.
Please help ASAP
What is the greatest common factor of 9 and 12?
3
9
36
108
So... I looked up this question before asking BUT some people said it was wrong ???? so I wanted to get some second opinions.
Answer:
The GCF Of 9 and 12 is 3.
Step-by-step explanation: Okay so first lets multiply! 3x1 Is 3 3x2 is 6 and 3x3 is 9, 3 x 4 equals 12! Since they both can be divided by 3, Example 12 divided by 3= 4 9 divided by 3= 3, therefore they have a GCF of 3. Remember, this is the greatest factor, not Multiple.
PLS HELP 50 POINTS I WILL GIVE BRAINLIEST
Assume the vertical lines are parallel. Find the measures of angles 1-15.
HELPP asappppppp plss
Answer:
1. standard form
2. slope-intercept form
3. point-slope form
4. horizontal
5. vertical
how would you describe a transformation to someone who has never taken geometry before? explain what a transformation is and state how a transformation can be used to solve a problem in real life ?
Answer:
a geometric transformation would mean to make some changes in any given geometric shape. In geometry, transformations relate to the movement of figures on a plane. Each transformation follow a rule
Step-by-step explanation:
For example 4 to the felt and 3 to the top, (x,y) (x-4, y+3)
2 down and 4 to the right, (x.y) (x-2, y+4)
Basically if you see an image on a graph, its the preimage and you need to create the new image the same size and shape as the the original.
A cylinder has a height of 5.3cm and a diameter of 3.0cm. What is its volume
Answer:
44.53
Step-by-step explanation:
I'm smort
(-1,-1) and ( 4,5)
Finding the distance between the two points
Answer:
The distance between the two points is
Exact form:
√41
Decimal form:
6.40312423.......
Have a wonderful day!!!
(PLEASE ANSWER ILL GIVE YOU 20 POINTS) Determine if the relation is a function. If the relation is a function, find the domain and range.Required to answer. Single choice.
Answers:
The relation is a function
Domain = {-2, -1, 0, 1, 2}
Range = {-2, 0, 2}
=================================================
Explanation:
The blue points shown are
(-2,-2)
(-1,0)
(0,2)
(1,0)
(2,-2)
Note how the x values do not repeat themselves. Visually this graph passes the vertical line test. It is impossible to draw a single straight vertical line through more than one blue point at a time. It tells us that any x input leads to exactly one y output.
The relation is a function
The domain is the set of x coordinates of the points
Domain = {-2, -1, 0, 1, 2}
The range is the set of y coordinates of each point
Range = {-2, 0, 2}
Toss out any duplicate items that may occur in the range.
Answer:
The relation is a function.
The domains are 2, 1, 0, -1, -2.
The ranges are -2, 0, 2, 0, -2
When Tran finished the next level of her video games, she gained 40 points for each of the two targets she hit and lost 125 points for taking too long. Write the total change to her score as an integer.
Answer: -45 is the first
-30 is the answer to the picture
find the value of x so that f(x)=7.
find the value of x so that f(x)=7
The answer is:
x = 5
The value of x such that f(x) = 7 is 5.
What is Function?A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.
Given a graph of a function f(x).
The graph is a straight line where there is a unique value of y for each value of x.
We have to calculate the value of x when y = 7.
Taking the y coordinate to 7, the x coordinate corresponding to the y coordinate is 5.
Hence the value of x is 5.
To learn more about Functions, click on the link :
https://brainly.com/question/12431044
#SPJ2
what is 14.876 - 4.96
Answer:
9.916 is the answer
A bird is about 6.9 inches long. If the bird can fly 64 miles with the wind in the same time it can fly 44 miles against the wind when the wind speed is 5 mph, what is the rate of the bird in still air?
Answer:
69?
Step-by-step explanation:
wheres the 420 at aye gottem
Help please with #9 & 10!!!
Answer:
9) x=3
10)x=8.5
Step-by-step explanation:
Because M is a midpoint, for both questions, the equations on M's either sides are equal.
9) 5x+9=24
Subtract 9 from both sides
5x=15
Divide by 5 on both sides
x=3
10) 3x-7=x+10
Add 7 to both sides and subtract x from both sides
2x=17
Divide by 2
x=8.5
INDEPENDENT PRACTICE
A rotating sprinkler spins and shoots water out a distance of 9 feet. What is the approximate area that is
being watered by the sprinkler?
A. 28 ft?
B. 80 ft
9 ft
C. 154 ft?
D. 254 ft?
What is an equation in point slope form of the line that passes through (7, 1) and (-3,9)
Answer:
y= -4/5x+33/5
Step-by-step explanation:
for questions like these, the slope is always defined as the change in y over the change in x or use the equation m=y2-y1/x2-x1.
x1=7 and y1=1
x2=-3 and y2=9
now plug these numbers in to the equation. m= 9-1 / -3-7 Or m= 8/-10 simplified to m= -4/5
now that we have the slope you can plug it in to the equation y=mx+b and get y= -4/5 + b.
to find b, the y-intercept, you can use either of the two points and the answer will be the same. for this one, I'll use (7,1).
1= -4/5 x 7+b. b= 33/5
HOPE THIS HELPS!!
the diagonals of a quadrilateral bisect each other at right angles. What is the quadrilateral best described as?
(a) parallelogram
(b) kite
(c) rhombus
(d) trapezium
Answer:
trapezium fit the most
what is 2 / 12 * 20
Answer:
3⅓
Step-by-step explanation:
2/12•20=
1/6•20=
20/6=
10/3=
3⅓
what is 8 1/2 times 11
Answer:
93 1/2
Step-by-step explanation:
A survey got 67,371 responses. The survey has 24 questions. How many total answers need to be processed?
Answer:
1,616,904 answers.
Step-by-step explanation:
67,371
x 24
______
1,616,904
I need two answers pls
Jenny has 3 guitars. Steve has 4 guitars. If the
ratio of guitars is 4:3, who is first in the ratio?
Answer:
Steve is first
Step-by-step explanation:
Steve is first in the ratio if the ratio of guitars is 4:3.
What is Ratio?The ratio is defined as a relationship between two quantities, it is expressed as one divided by the other. A set of data points can be used to observe the constant relationship. A set of data with a constant relationship between two values is a comparison of miles traveled to hours traveled. A special type of ratio is the comparison of two different quantities.
The general form of expressing a ratio between two quantities say 'a' and 'b' is a: b
Jenny has 3 guitars. Steve has 4 guitars.
The ratio is 4:3, which represents 4/3 or 4 parts Steve to 3 parts Jenny.
Hence, Steve is first in the ratio.
Learn more about the Ratio here:
brainly.com/question/1504221
#SPJ2
a line has a y-intercept of 6 and a slope of 1/2. what is the equation in slope intercept form
Answer:
y= 1/2x+6
Step-by-step explanation:
Slope intercept form is y=mx+b, where m is the slope and b is the y intercept. Using the information given, we know the slope-intercept form of the line is y=1/2x+6