Answer:
Step-by-step explanation:
Given :
Null Hypothesis :
Alterative Hypothesis
two tailed test
claim is Ha
Alterative Hypothesis: Ha: u ≠ 1
The alternative hypothesis that would be used to test the mean quantity is different from 1 liter is u ≠ 1.
What is alternative hypothesis?An assertion used in statistical inference experiments is known as the alternative hypothesis. It is contradictory to the null hypothesis and denoted by Ha or H1.
Given that the claim in the null us that u = 1.
Since, an alternative hypothesis is one in which the researchers anticipate a difference (or an effect) between two or more variables; thus, the observed pattern of the data is not the result of chance.
Therefore,
The alternative would be that u is not equal to 1.
Hence, the alternative hypothesis that would be used to test the mean quantity is different from 1 liter is u ≠ 1.
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Two sides of a triangle have lengths 8 and 11. Which inequalities describe the values that possible lengths for the third side?
The possible lengths for the third side 8² + 11² < x², 8² + 11² = x²
and 8² + 11² ≥ x².
What is the way of classifying a triangle?If a² + b² < c² then it is an acute angle triangle.
If a² + b² = c² then it is a right-angle triangle.
If a² + b² ≥ c² then it is an obtuse angle triangle.
Given, Two sides of a triangle have lengths 8 and 11.
Let, The third side be 'x'.
Therefore, The possible lengths for the third side are,
8² + 11² < x²...(i)
8² + 11² = x²...(ii)
8² + 11² ≥ x²...(iii)
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Draw A parallelogram with a 20 angle and a 160 angle
Answer:
see attached
Step-by-step explanation:
You want a parallelogram with angles of 20° and 160°.
AngleThe drawing will start with a line for one side. An angle of 20° can be drawn using a protractor, geometry app, or by approximating its slope.
The slope of a line 20° from the x-axis is tan(20°) ≈ 0.36397. A line with a slope of 4/11 = 0.3636... will have an angle of about 19.983° from the x-axis. For accuracy you can expect in a hand-drawn figure, this is "close enough." It is probably closer to 20° than you could draw using a protractor.
DrawingA parallelogram with the required angles is shown in the attachment. Point B is 11 units right and 4 units up from point A, so the angle at A is 20° when rounded to the nearest tenth.
__
Additional comment
Another very close approximation of tan(20°) is 9.9/27.2. A line with that slope makes an angle of 20.00002° with the x-axis.
Select the correct answer from the drop-down menu.
A company sells its product to distributors in boxes of 10 units each. Its profits can be modeled by this equation, where p is the profit after selling
n boxes.
p = n² + 300n + 100,000
Use this equation to complete the statement.
The company breaks even, meaning the profits are $0, only when it sells
Reset
Next
boxes.
Answer:
Step-by-step explanation:
The company breaks even, meaning the profits are $0, only when it sells 10,000 boxes.
Find an ordered pair (x, y) that is a solution to the equation.
4x-y=3
(x, y) = (_, _)
An ordered pair (x, y) that is a solution to the equation include the following: (x, y) = (-3, 0).
What is an ordered pair?In Mathematics, an ordered pair is sometimes referred to as a coordinate and it can be defined as a pair of two (2) elements or data points that are commonly written in a fixed order within parentheses as (x, y), which represents the x-coordinate (abscissa) and the y-coordinate (ordinate) on the coordinate plane of any graph.
How to find an ordered pair (x, y) that is a solution to the equation?In order to determine the ordered pairs that represent points on the graph of the given function, we would plot its equation by using an online graphing calculator and then read all the ordered pairs that lie on the line.
By critically observing the graph of the given function (see attachment), the required solutions are include following;
Ordered pair = (0.75, 0).
Ordered pair = (-3, 0).
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An isosceles right triangle has 12 cm legs.
Find the length of the hypotenuse.
Which statement is true about the graph? Select all that apply. (Lesson 3) Long Description The ratio of the rise to the run of each triangle is the same. The smaller triangle and the larger triangle shown are similar. The slope of the line is 2. The slope of the line is −2. The corresponding sides of the two triangles are not proportional.
The correct statements about the graph are given as follows:
The ratio of the rise to the run of each triangle is the same. The smaller triangle and the larger triangle shown are similar.The slope of the line is of -2.What are the rise and the run of a graph?The rise and the run of a graph are defined as follows:
Rise: change in the output, that is, the change in y.Run: change in the input, that is, the change in x.The slope of a line is given by the change in y divided by the change in x, hence it's equation is given as follows:
Slope = Rise/Run.
For the first triangle, the rise and the run are given as follows:
Rise = -6.Run = 3.Hence the slope is of:
Slope = -6/3 = -2.
For the second triangle, the rise and the run are given as follows:
Rise = -2.Run = 1.Hence the slope is of:
Slope = -2/1 = -2.
As the ratios are the same, the triangles are similar, the line has a slope of -2, and the corresponding sides are proportional.
Missing InformationThe graph is given by the image presented at the end of the answer.
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Picture below Please Help!
The angles forming the triangle must be equal to prove that they are parallel.
What are similar triangles?Two triangles are similar if they have the same ratio of corresponding sides and equal pair of corresponding angles.
Given here: AX/AB=XY/BC=AY/AC
Thus the triangles are similar (ΔAXY≈ABC)
Therefore ∠x=∠B & ∠Y=∠C , so we can conclude that the two lines (XY||BC)
Hence, The angles forming the triangle must be equal to prove that they are parallel.
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1. Solve for BC using Law of Cosines. Round to the nearest tenth when necessary.
Answer:
Step-by-step explanation:
Let's start by labeling the sides of the triangle ABC:
A = 12
B = x
C = 10
Using the Law of Cosines, we can write the following equation:
C² = A² + B² - 2ABcos(C)
Substituting the values we have, we get:
10² = 12² + x² - 2(12)(x)cos(10)
Simplifying, we get:
100 = 144 + x² - 24xcos(10)
Rearranging, we get:
x² - 24xcos(10) + 44 = 0
Solving for x, we get:
x = [24cos(10) ± √(576cos²(10) - 176)]/2
Calculating the values, we get:
x = [24cos(10) + √(5232)]/2 ≈ 18.3
x = [24cos(10) - √(5232)]/2 ≈ 7.7
Therefore, BC = 18.3 or BC = 7.7
How many times greater is the value represented by the digit 6 in the number 6419 then the value represented by the digit six in the number 84,362
Answer: The value represented by the digit 6 is 100 times greater.
Step-by-step explanation: The digit 6 in the number 84,362 is in the tens place, whereas the digit 6 in the number 6,419 is in the thousandths place. One thousand is equal to 10 x 100, meaning that the value is 100 times greater. Hope this helps and have a great day!
The value of digit 6 in 6419 is 100 times greater than the value of the digit 6 in 84362.
What is place value?Place value describes the position or place of a digit in a number. Each digit has a place in a number.
When we represent the number in general form, the position of each digit will be expanded.
Those positions start from a unit place, or we also call it one’s position. The order of place value of digits of a number of right to left is units, tens, hundreds, thousands, ten thousand, a hundred thousand, and so on.
Given that are two numbers 6419 and 84362, we need to determine that the value digit 6 in 6419 is how much times greater than the value of the digit 6 in 84362.
So, the expanded form of the numbers =
6419 = 6000 + 400 + 10 + 9
84362 = 80000 + 4000 + 300 + 60 + 2
Place values of 6 in each =
In 84362 = 60
In 6419 = 6000
∴ 6000 / 60 = 100
Hence, the value of digit 6 in 6419 is 100 times greater than the value of the digit 6 in 84362.
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When solving for a system of equations, if you get an answer of 6 = 0, what does this solution mean regarding the solution to the system?
Answer:
It means there is no solution.
Step-by-step explanation:
When you work on a system of equations and the variable falls out of the equation and you're left with a false statement...that means there is no solution.
help help help help help
Answer:
[tex]3x^{2}[/tex] + x + 6
Step-by-step explanation:
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Cool Down: Triangles and Cubes
5
A triangle has a base of 3 inches and an area of 5 square inches. Find the height
of the triangle. Show your reasoning.
10
3
im
16-21 x 17
Fat
17
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먹호를 30 50%
5.
When the triangle has a base of 3 inches and an area of 5 square inches, its height is 3.33 inches.
what is triangle ?Since a polygon has number of sides and three vertices, it is a polygon. It is a fundamental geometric shape. Triangle ABC is the moniker given to a pyramid that has vertices A, B, and C. When the three factors are not collinear, a singular plane and triangle are found in Euclidean geometry. A triangle is a polygon if it has three sections and three corners. The points where the three sides meet are known as the triangle's corners. The product of three triangle angles is 180 degrees.
given
triangle's surface area is equal to 1/2 * b*h
5 = 1/2 * 3 * h
10 = 3h
h = 3.33 inches.
When the triangle has a base of 3 inches and an area of 5 square inches, its height is 3.33 inches.
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The vertex angle of isosceles is triangle ABC is angle C. What can you prove? Select all that apply.
A. AB = BC
B. angle A = angle B
C. angle B = angle C
D. segment BC = segment AC
E. segment AB = segment AC
Answer: A. AB = BC can be proven true.
An isosceles triangle has two equal side lengths, and since the vertex angle is angle C, it means that sides AB and BC are the equal sides.
B. angle A = angle B can be proven true.
In an isosceles triangle, since the two sides are equal, the base angles are also equal.
D. segment BC = segment AC can be proven true.
In an isosceles triangle, since the two sides are equal, the base segments are also equal.
E. segment AB = segment AC can be proven true.
In an isosceles triangle, since the two sides are equal, the base segments are also equal.
C. angle B = angle C is not true.
Because the vertex angle is angle C, and it is formed by the two base segments, so it will be different than angle B and angle A.
Step-by-step explanation:
Answer:
B, D
Step-by-step explanation:
You want to know what you can prove, given that the vertex angle of isosceles triangle ABC is angle C.
Isosceles triangleA triangle is isosceles if it has two congruent sides or two congruent angles. In either case, the angles opposite the congruent sides are congruent, and vice versa.
The vertex angle is opposite the "base" of the isosceles triangle. The sides of the vertex angle are the congruent sides, and the angles that are not the vertex angle are the congruent angles.
A. AB = BCThese sides share point B, which is not the vertex. This cannot be proven.
B. Angle A = Angle BThese are the base angles of the triangle, hence congruent. This can be proven.
C. Angle B = Angle CThese angles cannot be proven congruent using the given information. This will be true if and only if the isosceles triangle is also an equilateral triangle.
D. BC = ACThese sides share point C, which is the vertex. This can be proven.
E. AB = ACThese sides share point A, which is not the vertex. This cannot be proven.
What are the solution of 3x^2+6x+6=0
Is correct?
To solve the equation for x, locate squares a, b, and c and use the quadratic formula. x= [tex]-1\±I[/tex]
Write about quadratic equation?A second order polynomial can be used to define a square. It has at least one term that needs to be squared, in other words. They go by the name quadratic equations as well. The quadratic equation's generic form is
[tex]ax^2\+ bx + c = 0[/tex]
Where x is an unknown variable and a, b, and c are numerical coefficients, the formula is: ax2 + bx + c = 0. An example of a quadratic equation is x2 + 2x + 1. in which a 0. The equation becomes a linear equation when this value is zero and ceases to be a quadratic equation.
bx+c=0
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From the triangle below, if AD = 8 and CD = 18, find the length of side BD.
Answer:
19.7
Step-by-step explanation:
A^2 + B^2 = C^2
8^2 + 18^2 = sqrt(388)
Prove AB || CD and BC || AD
The indicated congruency of the angles ∠BEC and ∠AED (∠BEC ≅ ∠AED) and ∠BEA and ∠CED (∠BEA ≅ ∠CED), according to the alternate interior angles postulate, shows that [tex]\overline{AB}[/tex]║[tex]\overline{CD}[/tex] and [tex]\overline{BC}[/tex]║[tex]\overline{AC}[/tex] are parallel.
What are parallel lines or segments?Two segments on a plane are parallel if the distance between the segments remain the same, through the lengths of the segments.
The specified details of the dimensions of the segments in ABCD are;
Segments [tex]\overline{AC}[/tex] bisects segment [tex]\overline{BD}[/tex] and vice versa
Required to prove that [tex]\overline{AB}[/tex] ║ [tex]\overline{CD}[/tex] and [tex]\overline{BC}[/tex] ║ [tex]\overline{AD}[/tex]
The two column consisting of the statements and reasons to prove that the specified sides are parallel is presented as follows;
Step [tex]{}[/tex] Statement Reasons
1. [tex]{}[/tex] [tex]\overline{AC}[/tex] and [tex]\overline{BD}[/tex] bisect each other Given
2. [tex]{}[/tex] [tex]\overline{BE}[/tex] ≅ [tex]\overline{ED}[/tex] and [tex]\overline{CE}[/tex] ≅ [tex]\overline{AE}[/tex] Definition of bisected segments
3. ∠BEC ≅ ∠AED and ∠BEA ≅ ∠CED Vertical angles theorem
4. [tex]{}[/tex] ΔBCE ≅ ΔADE and ΔBEA ≅ ΔCED SAS congruency rule
5. [tex]{}[/tex] ∠EBC ≅ EDA and ∠EBA ≅ ∠EDC CPCTC
6. [tex]{}[/tex] [tex]\overline{AB}[/tex] ║ [tex]\overline{CD}[/tex] and [tex]\overline{BC}[/tex] ║ [tex]\overline{AD}[/tex] Converse of alt. int. ∠s theorem
The details of the reasons in the above table are;
Vertical angles theorem
The vertical angle theorem states that the vertical angles formed by two intersecting straight lines are congruent.
SAS congruency rule
The SAS (acronym for Side-Angle-Side) congruency rule states that if two sides and an included angle in one triangle are congruent to two sides and an included angle in a second triangle, the two triangles are congruent
CPCTC
CPCTC is an acronym for Corresponding Parts of Congruent Triangle are Congruent.
Converse Alt, Int, ∠s theorem
The converse of the alt. int. ∠s (abbreviation for alternate interior angles) theorem state that if the the alternate interior angles formed by two lines and a common transversal are congruent, then the two lines are parallel
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A particle undergoes motion according to the equation: x = 5t^4- 2t^2- 8 where x is in meters and t is in seconds. Find the instantaneous acceleration at t=0.65 seconds.
Refer to the image attached.
Two consecutive numbers exist such that 3 times the greater number exceeds twice the lesser by 24. Find the numbers
The consecutive numbers are 21 and 22.
What are consecutive numbersConsecutive numbers are numbers that follow each other in order and they have a difference of 1 between every two numbers.
We shall represent the consecutive numbers with n and (n + 1) so that:
3(n + 1) = 2n + 24 {open bracket}
3n + 3 = 2n + 24
3n - 2n = 24 - 3 {collect like terms}
n = 21
since the lesser number is 21, then the greater number is 21 + 1= 22.
Therefore, the two consecutive numbers such that 3 times the greater number exceeds twice the lesser by 24 are 21 and 22.
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Answer:
Step-by-step explanation:
poop
-5(x - 10) = -35
What is x representing?
Answer: x is 17
Step-by-step explanation:
Distribute the -5: -5x + 50 = -35
Subtract 50 from both sides: -5x = -85
Divide both sides by -5: x = 17
Answer: x is representing here.
Step-by-step explanation: as the equation is -5(x-10) = -35
(-) sign in both sides will cancel out each other so the equation will become 5(x-10)= 35
now we will solve the equation
5x-50 = 35
5x = 35+50
5x = 85
x=85/5 = x =
The function f ( x ) = | cos ( π x ) | is differentiable everywhere on the interval ( 0 , 5 4 ) except at which value of x?
A. x= 1/8
B. x= 1/4
C. x= 1/2
D. x= 3/4
E. 1
Please show all work!!
The function f( x ) = |cos( π x )| is differentiable everywhere on the interval ( 0 , 5 4 ) except at x= 1/2.
The correct option is (C).
What is Function?In mathematics, a function is represented as a rule that produces a distinct result for each input x.
The collection of all the values that the function may input while it is defined is known as the domain. The entire set of values that the function's output can produce is referred to as the range. The set of values that could be a function's outputs is known as the co-domain.
Given:
Function, f( x ) = |cos( π x )|
Now, if we plot the graph for function f( x ) = |cos( π x )|.
The graph touches the x axis at two points, x= 0.5 and x= 1.25.
We know, the function touches at point on x- axis cannot be differentiable at that point.
Hence, except x= 0.5 the function is differentiable.
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Does anyone know the answer to this question!! Please help!!!
Answer:
square root 27
Step-by-step explanation:
3³/² =
(3×3×3 )½ =27½
CV={(Standard Deviation)/(Mean)}*100%
You are thinking about investing money in the stock market and have narrowed your choices to one of two
stocks: TD Bank or Cenovas Energy. For TD Bank you have the following statistics:
• Mean monthly closing price: $70.00
Sample standard deviation: $6.30
The monthly closing stock prices of Cenovas Energy for the last eight months is shown below:
Closing Stock Price: ($) 18.00 19.00 12.00 16.00 17.50 12.00 7.50 10.00
(a) Calculate the mean stock price of Cenovas Energy.
Answer=$
(b) Calculate the standard deviation for the sample prices of Cenovas Energy.
Answer=$
(c) What is the median stock price for Cenovas Energy?
Answer=$
(d) What is the range in Cenovas Energy's stock price?
Answer=$
(e) Calculate the coefficient of variation for each stock.
TD Bank Answer= %
Cenovas Energy Answer= %
(f) Which stock is riskier and why?
a. The mean stock price of Cenovus Energy is 15.437.
b. The standard deviation for the sample prices of Cenovus Energy is
3.93.
c. The median stock price for Cenovus Energy is 14
d. The range in Cenovus Energy's stock price is 11.5.
e. The coefficient of variation for each stock are 28.071% Cenovus Energy for % and 9% for TD Bank.
f. As the coefficient of variation is more for TD Bank it is riskier to buy.
What is the standard deviation?The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation suggests that the values are dispersed over a wider range, a low standard deviation suggests that the values tend to be close to the mean.
a. The mean stock price of Cenovus Energy is,
= (18 + 19 + 12 + 16 + 17.50 + 12 + 7.50 + 10)/8.
= 112/8.
= 14.
b. The variance for the sample prices of Cenovus Energy is,
= [tex]\frac{1}{n}\[ \sum_{i=1}^{n}[x_i - \overline{x}]^2[/tex].
= (1/8)×[(18 - 14)² + (19 - 14)² + (14 - 12)² + (16 - 14)² +(17.50 - 14)² +(14 - 12)² +(14 - 7.50)² + (14 - 7.50)² +(14 - 10)²].
= (1/8)×[16 + 25 + 4 + 4 + 12.25 + 4 + 42.25 + 16].
= (1/8)×(123.5).
= 15.437.
Standard deviation = √(15.437).
= 3.93.
c. To find the median stock price for Cenovus Energy first we have the data set in ascending order.
7.50, 10.00, 12.00, 12.00, 16.00, 17.50, 18.00, 19.00.
So, The median of the stock price for Cenovus Energy is,
= (12 + 16)/2.
= 28/2.
= 14.
d. The range in Cenovus Energy's stock price is (19.00 - 7.50).
= 11.5.
e. The coefficient of variation for each stock is,
CV = {(Standard Deviation)/(Mean)}×100%.
CV = (3.93/14)×100%.
CV = 28.071 for Cenovus Energy.
CV = (6.30/70)×100%.
CV = 9% for TD Bank.
f. TD Bank's higher coefficient of variance makes investing riskier.
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The formula for simple interest is I= Prt,where I is the interest earned, P is the principal, r is the interest rate and t is the number of years. Solve the formula for t in terms of P, I and r.
Answer: To solve for t in terms of P, I and r, we'll use algebraic manipulation of the given formula:
I = Prt
To solve for t, we'll divide both sides of the equation by Pr:
I/Pr = t
So, t = I/Pr
So we can say that the time (in years) is the ratio of the interest earned over the product of principal and the interest rate.
Step-by-step explanation:
Answer:
I/Pt
Step-by-step explanation:
bottom one wrong ash
determine whether the three points P=(-7,6,-8), Q=(-8,4,-11), R=(-9,3,-14) are colinear by computing the distances between pairs of points
Answer:
To determine whether the three points P, Q, and R are colinear, we can calculate the distances between pairs of points using the distance formula:
d(P,Q) = √((-8 - (-7))^2 + (4 - 6)^2 + (-11 - (-8))^2) = √((-1)^2 + (-2)^2 + (-3)^2) = √14
d(Q,R) = √((-9 - (-8))^2 + (3 - 4)^2 + (-14 - (-11))^2) = √((-1)^2 + (-1)^2 + (-3)^2) = √9
d(P,R) = √((-9 - (-7))^2 + (3 - 6)^2 + (-14 - (-8))^2) = √((-2)^2 + (-3)^2 + (-6)^2) = √19
If the three points are collinear, the distance between any two points should be a multiple of the distance between the other two points. Since √14, √9, and √19 are not multiples of each other, it can be concluded that the three points P, Q, and R are not collinear.
(01.04 MC)
Which radical function has a domain of (x € R|x≤-3) and range of y€R|y24}?
The domain and range of the the function are given below -
Domain → [-5, 10)
Range → [-3, 3)
What is a function?A function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).The domain of a function f(x) is the set of all values for which the function is defined, and the range of the function is the set of all values that function takes.Given is a graph of the function.
The domain of a function f(x) is the set of all values for which the function is defined, and the range of the function is the set of all values that function takes. So, we can write the domain as -
Domain → [-5, 10)
Range → [-3, 3)
Therefore, the domain and range of the the function are given below -
Domain → [-5, 10)
Range → [-3, 3)
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0.276 a rational number, why? explain please.
Answer:
It can be represented as a fraction, 276/1000. It isn't non-terminating.
0.276 is a rational number because we can write it as a fraction, where both denominator and numerator are integers.
5. Solve △YZX using Law of Sines when m∠Y=79°, m∠Z=81° and x=9.
Angle X= y= z=
Using sum of angles in a triangle theorem and sine law, the angle x is 20 degrees, while the length of y and z are 25.83 and 26 respectively.
What is Law of SineSine law is a mathematical law that states that the ratio of the lengths of two sides of a triangle to the sines of the angles opposite to them is constant. It is also known as the sine rule or the law of sines.
This is represented mathematically as;
x /sin X = y / sin Y = z / sin Z
To find angle X, we can simply use the theorem of sum of angles in a triangle.
X + Y + Z = 180°
X + 79 + 81 = 180
X = 20°
Using sine law
x / sin X = y / sin Y
9 / sin 20 = y / sin 79
y = (9 * sin 79) / sin 20
y = 25.83
Using sine rule again
z / sin Z = x / sin X
z / sin 81 = 9 / sin 20
z = (9 * sin 81) / sin 20
z = 25.99≅ 26
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help with this please
Answer: A, B, and E can be used to satisfy the equation
Step-by-step explanation:
A applies because 45 is the same exact number as 45, so the equal sign accurately compares them.
B applies because that symbol means less than or equal to, and 45 is not less than but is equal to 45.
C does not apply because that symbol means is not equal to, but 45 is equal to 45.
D does not apply because that is the less than symbol, and 45 is not less than 45.
E applies because it is greater than or equal to symbol, and 45 is not greater than but is equal to 45.
F does not apply because that is the greater than symbol and 45 is not greater than 45.
Hope this helps!
Solve for a. Help please!
[tex]\textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies \sqrt{c^2 - b^2}=a \qquad \begin{cases} c=\stackrel{hypotenuse}{12}\\ a=adjacent\\ b=\stackrel{opposite}{9}\\ \end{cases} \\\\\\ \sqrt{12^2 - 9^2}=a\implies \sqrt{144 - 81}=a\implies \sqrt{63}=a[/tex]
How many solutions does each system have? System I: 4x+3y=-1 12x+9x=21 System II: 5x+2y=-7 15x+6y=21
Answer:
Step-by-step explanation:
System I: This system has one solution. To solve, you would need to first solve for one of the variables, say x. Then, substitute the value of x into the other equation to solve for y.
System II: This system has an infinite number of solutions. To solve, you would need to first solve for one of the variables, say x. Then, substitute the value of x into the other equation to solve for y. Since both equations are linear, they will have an infinite number of solutions.