Answer
\(x=\frac{3+-\sqrt{53} }{2}\)
Step-by-step explanation:
x² - 3x - 11 = 0
quadratic formula : \(\frac{-b+-\sqrt{b^2-4(a)(c)} }{2(a)}\)
where the values of a b and c are derived from the equation
the equation given is written in quadratic form
ax² + bx + c = 0 , x² - 3x - 11 = 0
knowing this we can assign variables
a = 1 , b = - 3 and c = -11
we then plug in these values into the quadratic formula
recall formula \(\frac{-b+-\sqrt{b^2-4(a)(c)} }{2(a)}\)
we know a = 1 , b = - 3 and c = -11
- plug in values -
\(\frac{-(-3)+-\sqrt{3^2-4(-11)(1)} }{2(1)}\)
the two negative signs in front of the 3 cancel out and it changes to +3
\(\frac{3+-\sqrt{3^2-4(-11)(1)} }{2(1)}\)
3² = 3 * 3 = 9
\(\frac{3+-\sqrt{9-4(-11)(1)} }{2(1)}\)
( above under square root ) : -4 * -11 * 1 = 44
below : 2 * 1 = 2
\(\frac{3+-\sqrt{9+44} }{2}\)
9 + 44 = 53
we're left with \(x=\frac{3+-\sqrt{53} }{2}\)
and we are done!
Answer:
I believe the answer should be x = 3 ± \(\sqrt{53}\) over 2 (Fraction)
Step-by-step explanation:
\(x^2-3x-11=0\)
\(a=1\)
\(b=-3\)
\(c=-11\)
\(x=\frac{-(-3) ± sqrt(-3)^2-4*1(-11)}{2*1}\)
= x = 3 ± \(\sqrt{53}\) over 2 (Fraction)
HELP ME it's almost due
find the length of the diagonals of rectangle QRST
Answer:
11.since diagonal are equal of rectangle
QS=RT
4x+6=6x-4
6+4=6x-4x
2x=10
x=10/2
x=5
now
diagonal :4x+6=4*5+6=26
12.
again
QS=RT
9x+12=11x-10
12+10=11x-9x
2x=22
x=11
now
diagonal=9*11+12=99+12=111
Nora took 10 bottles of water to a picnic. Of these bottles of water, she and her friends opened a certain number of bottles, b. What expression can be used to determine the number of unopened bottles at the end of the picnic?
Answer:
10 - B = U
Step-by-step explanation:
U stands for the unopened bottles
for example if they opened 3 bottles it would be 10 - 3 = U (unopened bottles)
The value of U is 7 because the 10 bottles of water minus the 3 bottles they opened it would equal 7.
therefore the equation 10 - B = U shows the amount of unopened bottles
The smallest circle in the figure has a radius of 2 inches. Which equation gives the area A of the shaded part of the figure? Recall that A = (pi)r^2
Answer:
60π in²
Step-by-step explanation:
Inner Circle:
r = 2 in
Area of inner circle = πr²
= π* 2 * 2
= 4π in²
Middle circle:
r = 6 + 2 = 8 in
Area of middle circle = π * 8 * 8
= 64π in²
Area of shaded region = area of middle circle -area of inner circle
= 64π - 4π
= 60π in²
Answer:
A = 60pi
Step-by-step explanation:
the radius of the smallest circle is 2 inches so that would give us an area of 4pi. the distance in the shaded part is 6 inches, since we're wanting to find the area of the shaded part, we'll add the radius of the smallest circle, 2 inches, and add it to the length of the shaded circle, 6 inches, to get a radius of 8 inches. plug 8 inches into the formula and youll get 64pi then subtract the 4pi from 64pi and youll get 60pi, which is the area of the shaded part of a circle.
please help will give brainly
Answer:
2.7
Step-by-step explanation:
mean = (1 + 2 + 2 + 3 + 8 + 8)/6 = 4
absolute values of differences:
|1 - 4| = 3
|2 - 4| = 2
|2 - 4| = 2
|3 - 4| = 1
|8 - 4| = 4
|8 - 4| = 4
sum of the absolute values of the differences:
(3 + 2 + 2 + 1 + 4 + 4)/6 = 16
MAD = 16/6 = 2.7
Answer: 2.7
express the following limit as a definite integral: lim n→[infinity] n∑i=1 i6/n7=∫b1 f(x)dx
The given limit can be expressed as the definite integral: lim (n→∞) n ∑(i=1 to n) i⁶/n⁷ = ∫[1/n, 1] x⁶ dx
To express the given limit as a definite integral, we need to determine the appropriate function f(x) and the integration limits b and 1.
Let's start by rewriting the given limit:
lim (n→∞) (1/n) ∑(i=1 to n) \(i^6/n^7\)
Notice that the term i⁶/n⁷ can be written as (i/n)⁶/n.
Therefore, we can rewrite the above limit as:
lim (n→∞) (1/n) ∑(i=1 to n) (i/n)⁶/n
This can be further rearranged as:
lim (n→∞) (1/n^7) ∑(i=1 to n) (i/n)⁶
Now, let's define the function f(x) = x⁶, and rewrite the limit using the integral notation:
lim (n→∞) (1/n^7) ∑(i=1 to n) (i/n)⁶ = ∫[a,b] f(x) dx
To determine the integration limits a and b, we need to consider the range of values that x can take. In this case, x = i/n, and as i varies from 1 to n, x varies from 1/n to 1. Therefore, we have a = 1/n and b = 1.
Hence, the given limit can be expressed as the definite integral:
lim (n→∞) n ∑(i=1 to n) i⁶/n⁷ = ∫[1/n, 1] x⁶ dx
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A computer monitor has a width of 14.60 inches and a height of 10.95 inches. What is the area of the monitor display in square meters? area How many significant figures should there be in the answer? 2 3 4 5
The area of the computer monitor display is approximately 0.103 square meters, with three significant figures.
The area of the monitor display in square meters is found by converting the measurements from inches to meters and then calculate the area.
The conversion factor from inches to meters is 0.0254 meters per inch.
Width in meters = 14.60 inches * 0.0254 meters/inch
Height in meters = 10.95 inches * 0.0254 meters/inch
Area = Width in meters * Height in meters
We calculate the area:
Width in meters = 14.60 inches * 0.0254 meters/inch = 0.37084 meters
Height in meters = 10.95 inches * 0.0254 meters/inch = 0.27813 meters
Area = 0.37084 meters * 0.27813 meters = 0.1030881672 square meters
Now, we determine the number of significant figures.
The measurements provided have four significant figures (14.60 and 10.95). However, in the final answer, we should retain the least number of significant figures from the original measurements, which is three (10.95). Therefore, the answer should have three significant figures.
Thus, the area of the monitor display in square meters is approximately 0.103 square meters, with three significant figures.
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a journalist for an automotive magazine wants to determine how the weight of a passenger vehicle, in kilograms, is related to its length, in centimeters; the maximum number of passengers; and its safety rating on a 5-point scale. what is the correct format for a multiple regression equation?
the correct format for a multiple regression equation is
ŷ= \(b_{o} + b_{1}x_{1} + b_{2}x_{2} + b_{3}x_{3} + b_{4}x_{4}\)
multiple regression: The relationship between a single dependent or criterion variable and multiple independent or predictor variables is typically explained by multiple regression. The constant term and multiple independent variables with their corresponding coefficients are used to model a dependent variable. The term "multiple regression" refers to the fact that it requires two or more predictor variables.
because, the weight of a passenger vehicle, in kilograms, is related to its length, in centimeters; and the maximum number of passengers.
thus, ŷ=\(b_{o} + b_{1}x_{1} + b_{2}x_{2} + b_{3}x_{3} + b_{4}x_{4}\) is the multiple regression equation.
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how do you solve for quadrilaterals and their properties?
Opposite angles are equal.
Opposite sides are equal and parallel.
Diagonals bisect each other.
Sum of any two adjacent angles is 180°
Questian 14 (1 point) A solid metal prism has square base with sides of 4 inches, and height of 6 inches: A hole in the shape of a cylinder; with radius of inch, is drilled through the entire length of the rectangular prism. What is the approximate volume of the remaining solid, in cubic inches? 19 cubic inches 77 cubic inches 96 cubic inches 93 cubic inches 6 In
The approximate volume of the remaining solid is 77 cubic inches.
To find the approximate volume of the remaining solid, we need to subtract the volume of the cylinder from the volume of the rectangular prism.
Step 1: Find the volume of the rectangular prism
- Formula for the volume of a rectangular prism is V = lwh (length × width × height)
- The base of the prism is a square, so l = w = 4 inches
- The height is 6 inches, so V = 4 × 4 × 6 = 96 cubic inches
Step 2: Find the volume of the cylindrical hole
- Formula for the volume of a cylinder is V = π\(r^2\)h
- The radius of the cylinder is 1 inch (1/2 × 2), and the height is 6 inches (same as the height of the rectangular prism)
- V = π × \(1^2\) × 6 = 6π cubic inches (approximately 18.85 cubic inches)
Step 3: Subtract the volume of the cylinder from the volume of the rectangular prism
- Remaining volume = 96 - 18.85 ≈ 77.15 cubic inches.
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Please help me on this math problem. I does not make any sense>
Answer: She did not create it correctly because we have two science students and six music students instead of three science students and five music students. I believe pie charts work well because they give a quick overview of the students.
Would appreciate brainly <3
Is the number 1 prime? Explain why or why not.
Please explain why.
1 can only be divided by one other integer except1, hence it is not a prime number.
The reason why 1 is not a prime number.Any natural number higher than 1 that is not the sum of two smaller natural numbers is referred to be a prime number. A composite number is a natural number greater than one that is not prime.
Given this definition, 1 is not a prime number because it can only be divided by one other integer, which is 1 itself.
Based on the explanation above, we can then conclude that 1 is not a prime number.
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plss tell me the ans
Answer:
I dont know if this is right but I think its 125/343
PLEASE HELP I WILL GIVE BRAINLIEST
Answer:
x > 2
Step-by-step explanation:
Since the dot is not filled in, it does not include 2. Since it is moving to the right, it means it is more than 2.
Hope that helps!
Answer:
x>2
Step-by-step explanation:
since the circle on the number two is a hollowed-out circle then it is less than greater than so it is not equal to anything. and since the arrow is pointed greater than 2.
So all values of x are greater than 2
Hope this helps :)
EXPLAIN EXPLAIN EXPLAIN!!!! Abdul is painting his bedroom. Two of the walls are 10 feet in length by 9 feet high. The other two walls are 12 feet in length by 9 feet high. He is painting the room white, along with the ceiling. His door measures 3 feet wide by 7 feet tall and his closet is 6 feet wide by 7 feet tall. He won’t be painting either the door or closet. One gallon of paint will cover 400 square feet. How many gallons of paint does Abdul need to purchase? Explain how you found your answer.
EXPLAIN
As one gallon of paint will cover 400 square feet, then Abdul needs to purchase 2 gallons of paint.
To find the total area that Abdul needs to paint, we need to calculate the area of each wall and the ceiling, and then add them up.
Area of first wall = length x height = 10 ft x 9 ft = 90 sq ft
Area of second wall = length x height = 10 ft x 9 ft = 90 sq ft
Area of third wall = length x height = 12 ft x 9 ft = 108 sq ft
Area of fourth wall = length x height = 12 ft x 9 ft = 108 sq ft
Area of ceiling = length x width = 10 ft x 12 ft = 120 sq ft
Total area to be painted = 90 + 90 + 108 + 108 + 120 = 516 sq ft
Abdul is not going to paint the door or closet, so we need to subtract their areas from the total area.
Area of door = width x height = 3 ft x 7 ft = 21 sq ft
Area of closet = width x height = 6 ft x 7 ft = 42 sq ft
Total area to be painted after subtracting door and closet = 516 - 21 - 42 = 453 sq ft
Since one gallon of paint covers 400 square feet, Abdul needs to purchase:
453 sq ft ÷ 400 sq ft/gallon = 1.13 gallons of paint
Thus, as we round up to the nearest gallon since Abdul cannot purchase a fraction of a gallon. Abdul needs to purchase 2 gallons of paint.
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Hi. I need help with these questions.
See image for question.
Answer:
(a) P(1) = 3
(b) P(-2) = 15
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Function NotationStep-by-step explanation:
Step 1: Define
P(x) = x³ + 4x² - 3x + 1
P(1) is x = 1
P(-2) is x = -2
Step 2: Evaluate
P(1)
Substitute: P(1) = 1³ + 4(1)² - 3(1) + 1Exponents: P(1) = 1 + 4(1) - 3(1) + 1Multiply: P(1) = 1 + 4 - 3 + 1Add: P(1) = 5 - 3 + 1Subtract: P(1) = 2 + 1Add: P(1) = 3P(-2)
Substitute: P(-2) = (-2)³ + 4(-2)² - 3(-2) + 1Exponents: P(-2) = -8 + 4(4) - 3(-2) + 1Multiply: P(-2) = -8 + 16 + 6 + 1Add: P(-2) = 8 + 6 + 1Add: P(-2) = 14 + 1Add: P(-2) = 15Answer:
a) 3b) 15Step-by-step explanation:
GivenP(x) = x³ + 4x² - 3x + 1Finda) P( 1 ), b) P( - 2)SolutionSubstitute the value of x:
a) P(x) = x³ + 4x² - 3x + 1
P(1) = 1³ + 4(1)² - 3(1) + 1 = 1 + 4 - 3 + 1 = 3P(1) = 3b) P(x) = x³ + 4x² - 3x + 1
P(-2) = (-2)³ + 4(-2)² - 3(-2) + 1 = -8 + 16 + 6 + 1 = 15P(-2) = 15At a restaurant jars of tomato sauce are stored in boxes in the pantry. Each box contains 8 jars of tomato sauce. A cook uses 2 jars from 1 of the boxes.
Which function shows the relationship between y , the total number of jars of tomato sauce remaining in the pantry, and x , the number of boxes in the pantry?
The equation that represents the total number of jars of tomato sauce remaining will be y = - 0.25x + 1.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
At an eatery containers of pureed tomatoes are put away in an enclosed storage space. Each case contains 8 containers of pureed tomatoes. A cook utilizes 2 containers from 1 of the crates.
Let 'x' be the number of boxes and 'y' be the tomato sauce remaining in the pantry. Then the equation is given as,
y = - (2 / 8)x + 1
y = - 0.25x + 1
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Find the 54th term of the following arithmetic sequence.15, 22, 29, 36,...
what is the GCF of 16;14 ?
Answer:
2
Step-by-step explanation:
Factors for 14: 1, 2, 7, and 14. Factors for 16: 1, 2, 4, 8, and 16.
The greatest common factor being 2, as they both have it.
The yield in bushels per acre is related to the average temperature. The attached sample data was obtained in a recent study. The least-square regression equation for yield in bushes and the average temperature is:Region Temperature Yield (in bushels per acre)1 4 32 8 73 10 84 12 105 9 86 6 4A) y = 1. 3 + 1. 1x B) y = 2. 1 + 0. 9xC) y = -0. 8 + 0. 9x D) y = -1. 3 + 1. 1x E) None of these
The least-square regression equation for yield in bushes and the average temperature is option (c) y = -0. 8 + 0. 9x
To find the least-square regression equation for the given sample data, we can use a statistical software or do the calculations manually. The calculations involve finding the slope and y-intercept of the line that best represents the relationship between the yield and average temperature.
After performing the calculations, we get the least-square regression equation for the given sample data, which is y = -0.8 + 0.9x. This equation tells us that for every one unit increase in the average temperature, the yield of crops increases by 0.9 bushels per acre. The y-intercept (-0.8) represents the yield of crops when the average temperature is zero, which is not practically possible.
Therefore, the correct answer to the question is option C, y = -0.8 + 0.9x.
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Each triangle in the STL file is defined by the vertices and inward pointing surface normal vector True O False Since the STL file is created from the Solid Model, it can be reconverted into the original CAD model O True False Which one of the following is NOT an advantage of using lattice structure? Reducing the weight Saving the material cost Simplifying the design and manufacturing process Increasing the heat exchange area for a heat exchanger
False. Each triangle in the STL file is defined by the vertices, but not necessarily by the inward pointing surface normal vector. The surface normal vector is often calculated based on the vertex positions.
False. The STL file is a mesh representation of the CAD model, and it does not contain all the information needed to fully reconstruct the original CAD model. It lacks information such as parametric features, assembly relationships, and design intent, making it difficult to recreate the exact original model.
The option "Increasing the heat exchange area for a heat exchanger" is NOT an advantage of using a lattice structure. Lattice structures are known for their lightweight properties, material-saving benefits, and simplified design and manufacturing processes.
However, increasing the heat exchange area for a heat exchanger is not typically associated with lattice structures. Heat exchangers usually rely on other design considerations, such as fin arrays or extended surfaces, to enhance heat transfer efficiency, rather than lattice structures.
Therefore, increasing heat exchange area is not a direct advantage of lattice structures.
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Use the Pythagorean Theorem to find the missing length. Round your answer to the
nearest tenth.
In this triangle it is clear that the unknown side x is the hypotenuse of both the triangles that are being formed . So , let us take any one of the triangles and with it's length let us find the length of their hypotenuse which is side x .
= 5² + 5² = x² ( according to the pythagorean theorem the square on the hypotenuse will be equal to the sum of the squares on the other two legs )
= 25 + 25 = x²
= 50 = x²
= 7.0710678119 = x
But they have given that we have to round it off to the nearest tenths , so ;
= 7.0710678119 will be equal to = 7.10
= 7.1 = x
Therefore , the length of the unknown side x = 7.1 .
Point V lies between points U and W on Line segment U W.
If UW = 9x – 9, what is UW in units?
Answer:
See Below
Step-by-step explanation:
2x - 4 + 4x + 10 = 9x - 9
6x + 6 = 9x - 9
3x = 15
x = 5
UW = 9x-9 = 9*5-9
UW = 36 units
Answer:
36
Step-by-step explanation:
UW = UV + VW
9x - 9 = 2x - 4 + 4x + 10
9x - 2x - 4x = -4 + 10 + 9
3x = 15
x = 5
UW = 9x - 9 = 9(5) - 9 = 45 - 9 = 36
-3b-75=0 I need 2 solutions
Answer:
-25
Step-by-step explanation:
-3b-75=0
+75 +75
-3b=75
/-3 /-3
b=-25
There isn't 2 solutions
---
hope it helps
nxz - f = 3f
Solve for x
Answer:
x = 4f/nz
Step-by-step explanation:
nxz - f = 3f solve for x
nxz = 3f+f
Factor of nxz is x(nz)
x(nz) = 3f+f
x(nz) = 4f
MUltiply both side with 1/nz and you get
x = 4f/nz
Help please important if you help you get brain lay
[1] 1/2
- It will be 1/2 as large because of the scale factor
[2] 1/4
- 1/2 * 1/2 = 1/4
[3] (1/2)n
- For every scale factor (n), there will be a chance of 1/2
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Evaluate.
(23)4
Enter your answer by filling in the boxes.
Answer:
The answer is 92.
Step-by-step explanation:
Hope it helped good luck dude(☞゚ヮ゚)☞
look at this set of 8 numbers: 24557685 by how much would the range increase if the number 1 replaced the number 4 in the set?
To calculate the increase in range when the number 1 replaces the number 4 in the set {2, 4, 5, 5, 7, 6, 8, 5}, we need to first find the range of the original set and then find the range of the modified set.
The range of a set of numbers is the difference between the maximum and minimum values in the set.
Original set: {2, 4, 5, 5, 7, 6, 8, 5}
Maximum value: 8
Minimum value: 2
Range of the original set: 8 - 2 = 6
Modified set (with 1 replacing 4): {2, 1, 5, 5, 7, 6, 8, 5}
Maximum value: 8
Minimum value: 1
Range of the modified set: 8 - 1 = 7
Therefore, the range increases by 7 - 6 = 1 when the number 1 replaces the number 4 in the set.
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Justin made a scale drawing of a sailboat he saw at the harbor. The length of the actual boat is 24 feet, and the mast is 20 feet high. In Justin's sketch, the length is 6 inches. What is the height of the mast in his sketch?
Suppose ax^2+bx+c is a factorable trinomial in which a and c is a positive prime number. Write an expression to represent the value of b.
B is therefore represented by the expression: b = 2a + 2c.
Basic trinomial examples: what are they?An algebraic equation known as a trinomial has three non-zero elements and more than one variable. Examples include: x² + 5y - 25, a³ - 16b + 10, etc. Due to their three elements, these are trinomials.
Let's assume that the factorization of the trinomial ax² + bx + c is of the form (mx + p)(nx + q), where m, n, p, and q are integers.
Expanding this expression using FOIL, we get:
mnx² + (mq + np)x + pq
We know that this expression is equal to ax² + bx + c, so we can equate the corresponding coefficients:
mn = a
mq + np = b
pq = c
Since a and c are positive prime numbers, they have exactly two factors each (1 and themselves). Therefore, m and n must each be equal to either a or 1, and p and q must each be equal to either c or 1.
If m and n are both equal to a, then their product mn is equal to a², which is not prime (since a is prime and greater than 1). Therefore, one of m and n must be equal to 1, and the other must be equal to a. Similarly, one of p and q must be equal to 1, and the other must be equal to c.
Without loss of generality, assume that m = 1 and n = a, and that p = c and q = 1. Then we have:
mn = a
mq + np = a + c
pq = c
Substituting these values into the expression mn + mq + np + pq, we get:
a + a + c + c = 2a + 2c
Therefore, the expression that represents the value of b is:
b = 2a + 2c
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1. The population of a bacteria culture increases at the rate of 3 times the square root of the present population. A.Model the population P P() of the bacteria population with a differential equation. B. Solve the differential equation that models the population P population. Pt) of the bacteria C. Suppose the population at time r 0 hours is 1000. Derive an equation for the population P as an explicit function of time r (in hours). Your equation should contain no undetermined constants. D. What's the population of the bacteria culture at the end of 10 hours? After 100 hours? (You can round down to an integer for your population solutions.)
Answer
Solved Calculus AB, Semester 2 Assignment: Applications of ...
The population of a bacteria culture increases at the rate of 3 times the square root of the present population.