Solve the Quadratic Equation for x
x^2-2x+11=0
no spams pls first part is x squared, if u need clarification
Answers
x = +/- sqrt10 i + 1
Explanation:
Key: +/- is plus-minus
I used complete the square
x^2 - 2x + 11 = 0
x^2 - 2x = -11 -2/2 = (-1)^2 = 1
( x - 1 ) ^2 = -10
x - 1 = +/- sqrt10 i
x = +/- sqrt10 i + 1
Picture for clearer answers v
Related Questions
"sports discount" has uniforms for 68$. They are offering a 20% discount on each uniform, and a 7 percent sales tax will be applied to the discount price. What would be the final cost for eight uniforms after the discount and sales tax
Answers
Answer:
58.208 times 8 equals 465.664 rounded down to 465.66
Step-by-step explanation:
Answer:
$465.66
Step-by-step explanation:
First, we are buying 8 uniforms. Therefore, the total price on a normal day would be 8x68 = $544
However, on this day, there is a 20% discount. In other words, we are only paying 80% of the original price as percentages are always out of 100.
The price after the sports discount will be 544x0.8 = $435.2
On top of this, we have to pay a sales tax of 7 percent. The 7 percent is an additional cost to the discounted price of 435.2, hence we add 0.07 (7 percent in decimals) onto 1 (100% in decimals).
This gives us 435.2 x ( 1 + 0.07 ) = 465.664.
Because currency is to 2 decimal points (1 cent), the final answer will be 465.66, or 465 dollars and 66 cents.
Triangle ABC is a right triangle. The lengths of the legs are 60 centimeters and 80 centimeters.
What is the length, in centimeters, of the hypotenuse?
Answers
Answer:
69.28 cm
Step-by-step explanation:
i used a calculator but the steps you take to solve this are...
1. Multiply the length of one side by the length of the other.
80x60 = 4,800
2. Square that number to get the hypotenuse
[tex]\sqrt48000[/tex]
3. You've got your answer
(69.28)
Answer:
100 cm
Step-by-step explanation:
<3
Solve the following problems using Elimination.
NO LINKS PLS-
8x - 5y =-18
2x + 5y = 58
Answers
9514 1404 393
Answer:
(x, y) = (4, 10)
Step-by-step explanation:
The coefficients of y are opposites, so the y-terms can be eliminated by adding the equations.
(8x -5y) +(2x +5y) = (-18) +(58)
10x = 40 . . . . . . simplify
x = 4 . . . . . . . . . divide by 10
Substituting this into the second equation gives ...
2(4) +5y = 58
5y = 50 . . . . . . . . subtract 8
y = 10 . . . . . . . . . .divide by 5
The solution is (x, y) = (4, 10).
Why would someone want to factor a polynomial? Provide real world examples of different questions we can answer or facts we can determine from factoring a polynomial.
Answers
Factoring is an important process that helps us understand more about our equations. Through factoring, we rewrite our polynomials in a simpler form.
It is used in asset (stock) valuation. It is used in bond trading and mortgage calculations.
If 4c + 10= 20 -16c, what is 8c?
Answers
What is the measure of each angle of an equilateral triangle?
A. O 90°
B. O 45°
C. 60°
D. 30°
Answers
Answer:
C) 60 degrees
Step-by-step explanation:
An equilateral triangle has all equal angles. We know that all the angles of a triangle add up to 180 degrees. Therefore 45+45+45=180 giving you an equilateral triangle angle measure.
jason has 60 toy cars 30% of the cars are blue
how many cars are blue?
Answers
Answer: Eighteen toy cars are blue
Step-by-step explanation:
Find the 8th term of the arithmetic sequence -5x+3, x+9, 7x+15, ...
Answers
Answer:
Step-by-step explyou have a big brother or sister
Camille is attending a fundraiser. She pays for her admission and buys several raffle tickets.
The function S = 5r + 13 represents the total amount of money she paid, S.
and the number of tickets she bought, r. Which is a correct statement?
Camille paid total of $18 at the fundraiser.
The admission was $5.
Camille bought 13 tickets.
The admission was $13.
Answers
Answer: S=5r+85 i think try it out
Step-by-step explanation:
Answer:
The second statement.
Step-by-step explanation:
The function S = 5r + 13 means that the Total = 5 * Tickets + 13 Admission
So if Camille bought 13 tickets, the + 13 at the end means that no matter what, she had 13 dollars admission.
Determine the min value of y=18cos(10θ) Enter only the numeric value
Answers
Answer:
look at this
o(*≧□≦)o
Step-by-step explanation:
MATH-WAY
Answer:
I dunno.... like 29876?
Step-by-step explanation:
SO for this one I'm thinking C but i'm not sure
Answers
Answer: A
Step-by-step explanation: I would say A, because on the left, you have your domain, and the right is your range and codomain.
-4,1,7,15
Which of these is a simplified form of the equation 13z + 2 = 8 + 2z + 1z? (4 points)
a
10z = 6
b
10z = 10
c
4z = 6
d
4z = 10
Answers
Answer:
a part
Step-by-step explanation:
Answer is attached....
Hope it helps:)
How many solutions does this equation have?
8z − 5 = 8z
Answers
Answer:
Zero
Step-by-step explanation:
Solve the equation by subtracting 8z from both sides:
8z − 5 = 8z
-5 = 0
-5 [tex]\neq[/tex] 0
This is a false statement, because -5 is not equal to zero.
This means that there are no solutions to the equation.
So, the equation has zero solutions
Because both sides of the equation have the same variable ( they both have 8x) this equation does not have any solutions.
A student in a chemistry lab has access to two acid solution .The first solution is 20% acid and the second is 45% acid .(the percentage are by volume). How many milliliters of each solution the student mix together to obtain 100 ml of a 30% acid solution?
Answers
Answer:
x = 20% acid = 60 ml
y = 45% acid = 40 ml
Step-by-step explanation:
Let
x = 20% acid
y = 45% acid
x + y = 100 (1)
.20x + .45y = .3 ×100
.20x + .45y = 30 (2)
From (1)
x + y = 100 (1)
x = 100 - y
Substitute x = 100 - y into (2)
.20x + .45y = 30
.20(100 - y) + .45y = 30
20 - .20y + .45y = 30
- .20y + .45y = 30 - 20
.25y = 10
y = 10/.25
y = 40 ml
Substitute y = 40 into (1)
x + y = 100
x + 40 = 100
x = 100 - 40
x = 60 ml
x = 20% acid = 60 ml
y = 45% acid = 40 ml
Plz solve this is for a test and I have a f soooo-
Answers
The answer is 12/2, well that's what I got.
Either way this question might get deleted so yeah
12
Step-by-step explanation:
12 divided by 2 is 6. so this would be the answer.
Connor is organizing textbooks on his bookshelf. He has a Spanish textbook, a math textbook, a physics textbook, and a health textbook. How many different ways can he line the textbooks up on his bookshelf?
Answers
Answer:
you can organize them 24 different ways
The different ways can he line the textbooks up on his bookshelf is 24
What is fundamental counting principle?The fundamental counting principle is a rule used to count the total number of possible outcomes in a situation.
Given that, Connor is organizing textbooks on his bookshelf. He has a Spanish textbook, a math textbook, a physics textbook, and a health textbook.
The number of ways to arrange n things = n!
Number of different books = 4
Number of different ways to arrange 4 different books =4!
Number of different ways to arrange 4 different books= 4 x 3 x 2 x1
Number of different ways to arrange 4 different books = 24
Hence, the different ways can he line the textbooks up on his bookshelf = 24
Learn more about fundamental counting principle, click;
https://brainly.com/question/25193667
#SPJ2
HURRRYYY PLEASEEE. A ballasted roof is flat and covered with gravel to hold the roofing material in place. Adam plans to cover the roof in the diagram with gravel.
The area that Adam plans to cover with gravel is
. If the weight of the gravel is 12 pounds per square foot, the total weight of gravel on the roof will be
.
Answers
You can’t answer because there is not enough information. You can comment under here and rewrite it or whatever
MARK ME BRAINLIEST PLEASE
Kelly has two dogs, Pixie and Fifi.
Pixie weighs 8.5 kilograms
Fifi is 720 grams lighter than Pixie.
Work out how much Fifi weighs.
Answers
Answer:
7.78 kilograms
Will give brainliest if it is correct!
Answers
Answer:
(-5, 1)
Step-by-step explanation:
Eliminate the equal sides of each equation and combine.
[tex] - x - 4 = \frac{3}{5} x + 4[/tex]
Solve − x −4 =35x + 4 for x.
[tex]x = - 5[/tex]
Evaluate y when x = −5.
[tex]y = 1[/tex]
hence, the system of this equation is (-5, 1).
Which of the following
situations corresponds to
this graph? (Be careful!
The y-axis shows speed, not distance.)
Answers
Question Help The temperature in a greenhouse should be 70 degrees or higher. One morning, the heater stopped working. The temperature dropped 5 degrees before someone fixed the heater. The temperature was still at least 70 degrees when the heater started working again. How can you best describe the temperature in the greenhouse before the heater stopped working? I need help please
Answers
Answer:
the temperature was still suitable for the greenhouse
Step-by-step explanation:
Help again please Don’t get it at all
Answers
Answer:
hi
Step-by-step explanation:
Answer:
42 degrees
Step-by-step explanation:
the other angles are 90 and 48
Can someone please help me please
Answers
Answer:
the answer is 50 square ft bc i counted the squares and i got 50
Step-by-step explanation:
Answer:
i think it would be C
Step-by-step explanation:
just add all the squares
Find (g • f) (3)
f(x) = |x+2|
g(x) = -x^2
a. -25
b. 1
c. 4
d. -15
Answers
Step-by-step explanation:
Given
f(x) = |x + 2|
g(x) = - (x)²
Now
(g•f) (3) = g ( 3 + 2 )
= g(5)
= - (5)²
= -25
Hope it will help :)
Write 5/36 as a decimal
Answers
Answer:
0.138
Step-by-step explanation:
Answer:
0.388888888888
Step-by-step explanation:
take 36 to the nearest hundred.
times the numerator with the same number
and convert
Rectangle JKLM
is rotated to obtain J′K′L′M′
. Which statement is true
a.J′K′L′M′ will be a quadrilateral but not a rectangle because the measurements of line segments and angles are preserved in a rotation, but parallel lines are not.
b.J′K′L′M′ will be a parallelogram but not a rectangle because parallel lines are preserved in a rotation, but the measurements of line segments and angles are not.
c.J′K′L′M′ will be a rectangle because the measurements of line segments and angles, and the presence of parallel lines are preserved in a rotation.
d. J′K′L′M′ will not be a rectangle because the measurements of line segments and angles, and the presence of parallel lines are not preserved in a rotation
Answers
Answer:
Answer is A - Angles that are congruent are complementary to the same angle.
Step-by-step explanation:
trust the process
what is 5/6 divided by 1/6 in simplest form
Answers
Answer:
5 is the answer
Step-by-step explanation:
⅚÷⅙
5/6*6/1
5
The hanger image represents a balanced equation (look at picture)
Answers
Answer:
A) [tex]27 = b + 9[/tex]
[tex]b=18[/tex]
Step-by-step explanation:
When given a balanced scale (represented by a hanger in this image), the sum of the values on one side equals the value on the other side. Thus, the equation that this hanger represents is the following:
[tex]27 = b + 9[/tex]
Use inverse operations to solve this equation,
[tex]27 = b + 9[/tex]
[tex]-9[/tex]
[tex]18 = b[/tex]
There is a bag filled with 5 blue, 6 red and 2 green marbles.
A marble is taken at random from the bag, the colour is noted and then it is not replaced.
Another marble is taken at random.
What is the probability of getting 2 greens?
Answers
Answer:
the probability of getting 2 greens is 2/13
Step-by-step explanation:
Joe is wrapping a birthday present in a box that is 21 inches long, 14.5 inches wide, and 9 inches high. All sides of the box must be covered. What is the surface area that must be covered by wrapping paper? *
Answers
Answer:
2740.5
Step-by-step explanation:
This is what I got why I did was multipley them
Answer:
2740.5
Step-by-step explanation:
This is what I got when I multipled