Median won't change, however Mean will fall by 180.
What do mean and median?By summing all the numbers in a data collection and dividing by the total number of values in the set, one may get the mean (average) of the data set. When a data collection is sorted from least to largest, the median represents the midpoint value.
African elephants total 555 in number.
Elephants had a 3800 kg average mass.
Elephants had a 3600 kg median mass.
Lola, the elephant that was the smallest, weighed 2700 kg.
Later, Lola became really ill and lost a lot of weight, reaching a mass of 1800 kg.
What effect will Lola's weight loss have on the mean and median as well as Currently, the median is 3600 and the lowest is 2700.
now 2700 becomes 1800
so Median remains the same as 3600
No change in Median
The mean mass of the elephants was 3800 kg
=> total weight = 5 x 3800 = 19000 kg
2700 kg becomes 1800 kg
Hence new total mass = 19000 - 2700 + 1800 = 181000 kg
New Mean = 18100/5 = 3620 kg
Mean reduced by 3800 - 3620 = 180 kg
No change in Median weight
Mean reduced by 180 kg
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How is a system of two linear inequalities in two variables different from a system of two linear equations in two variables?
Answer:
A system of two linear inequalities in two variables is a set of two linear inequalities that involve two variables, such as x and y. A system of two linear equations in two variables is a set of two linear equations that involve two variables, also typically x and y.
There are several key differences between a system of two linear inequalities in two variables and a system of two linear equations in two variables:
Inequalities use symbols such as "less than" or "greater than" to indicate the relationship between the variables, whereas equations use the equal sign (=).
The solution to a system of linear inequalities is a region in the coordinate plane, whereas the solution to a system of linear equations is a single point.
The solution to a system of linear inequalities is found by graphing the inequalities on the coordinate plane and finding the region where they intersect, whereas the solution to a system of linear equations is found by solving the equations for the values of the variables.
The solution to a system of linear inequalities may include an infinite number of points, whereas the solution to a system of linear equations is always a finite number of points.
Overall, the main difference between a system of two linear inequalities in two variables and a system of two linear equations in two variables is the way in which the solutions are represented and found.
(3x-2)(2x2+5x-1) what is not equivalent to the product
The only option that is not an equivalent of the product of both polynomials is; C: 6x³ + 11x² − 13x + 2
What kinds of equations are there?Equations can be classified as either identities or conditioned equations. For each quantity of the variables, an identity is true. Only specific values of the variables make a conditional equation legitimate. The equals sign ("="), which separates two expressions, is a symbol for an equation.
Here,
We are given the expression;
(3x - 2)(2x² + 5x - 1)
The result of expanding the polynomial is;
6x³ + 11x² − 13x + 2
Looking at the given options as seen online, the only one that is not an equivalent of the given product is;
Option C) : 6x³ + 11x² − 13x + 2 is correct
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Compare the triangles and determine whether they can be proven congruent, if possible by SSS, SAS, ASA, AAS, HL, or N/A (not congruent or not enough information). Select your answer.... Take your time this is a grade!O N/AO SASO SSSO AASO HL
The triangles can be proven congruent using the ASA congruence postulate.
∠ABK is congruent to ∠CBK.BK is congruent to BK (common side )∠AKB is congruent to ∠CKB.Thus, we can say that triangles ABK and CBK are congruent.
Triangles are congruent, according to the Angle Side Angle Postulate (ASA), if any two angles and their included side are equivalent in the triangle. The side between two angles is considered an included side.
Additionally, you can confirm that your two triangles are congruent by employing the Side Angle Side Postulate (SAS). In this case, we choose a side and its equivalent side on two triangles rather than two angles.
Triangles are said to be congruent according to the SAS Postulate if any pair of corresponding sides and their included angle are also congruent.
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Which of the following is equivalent to 5(x+6)-6(3x+3)=10
Answer:
B
Step-by-step explanation:
5x + 30 - 18x - 18 = 10
-13x + 12 = 10
Question 1. Let the points A(2,-1), B(-3,4), and C(-5,-7) be the vertices of triangle A B C.
(a) Let P and Q be the midpoints of the sides AB and AC respectively. Find the coordinates of P and Q. (2 marks)
(b) Show that PQ is parallel to BC. (2 marks)
a) The coordinates of the midpoints P and Q are given as follows:
P(-0.5, 1.5).Q(-1.5, -4).b) The two segments are parallel because they have the same slope.
How to calculate the midpoints?The midpoints between two points is given by the mean of the coordinates of these two points.
Hence the midpoint P of AB has the coordinates given as follows:
x - coordinate: (2 - 3)/2 = -0.5.y - coordinate: (-1 + 4)/2 = 1.5.The midpoint Q of AC has the coordinates given as follows:
x - coordinate: (2 - 5)/2 = -1.5.y - coordinate: (-1 - 7)/2 = -4.What are parallel segments?Parallel segments are segments that have the same slope, that is, the same result of the division of the change in y by the change of x of two points in the segment.
The slopes of PQ and BC are given as follows:
PQ: m = (-4 - 1.5)/(-1.5 - (-0.5)) = 5.5BC: m = (-7 - 4)/(-5 - (-3)) = 5.5.More can be learned about midpoints at https://brainly.com/question/5566419
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Find the mean and standard deviation for each uniform continuous model. (Round "Mean" answers to 1 decimal place and "Standard deviation" answers to 4 decimal places.) Mean a. U(0, 15) b. U(90, 230) c. U(4, 92)
The mean and the standard deviation of the distributions are
Mean = 7.5, Standard deviation = 4.3301Mean = 160. Standard deviation = 40.4145Mean = 48, Standard deviation = 25.4034How to determine the mean and the standard deviation?The distribution is given as:
A uniform continuous model
The mean and the standard deviation of this type of model are
Mean = (a + b)/2
Standard deviation = (b−a)/√12
Using the above formulas, we have
a. U(0, 15)
Mean = (0 + 15)/2 = 7.5
Standard deviation = (15−0)/√12 = 4.3301
b. U(90, 230)
Mean = (90 + 230)/2 = 160
Standard deviation = (230 − 90)/√12 = 40.4145
c. U(4, 92)
Mean = (4 + 92)/2 = 48
Standard deviation = (92 - 4)/√12 = 25.4034
Hence, the standard deviation of U(4, 92) is 25.4034
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Why do you think taxes have become more complicated since 1913?
Answer:
Before 1913, federal government revenues came mainly from taxes on goods—tariffs on imported products and excise taxes on items like whiskey.
Step-by-step explanation:
What was the tax rate in 1913?
The act levied a tax of one percent on all incomes above the exemption with additional surtax rates imposed for progressively higher incomes. Those surtax rates started at one percent for those making $20,000 or more and topped out at a mere six percent on incomes in excess of $500,000.
Which of the following is the equation of the line that is perpendicular to y = - 4x - 5 and goes through the point (-2, 3)?
O y = - 4x-5
Oy = 4x + 11
O y = x + 1/
O y = -x + 1/
Answer:
[tex]y=\dfrac{1}{4}x+\dfrac{7}{2}[/tex]
Step-by-step explanation:
Given equation:
[tex]y=-4x-5[/tex]
If two lines are perpendicular to each other, their slopes are negative reciprocals.
The slope of the given equation is -4.
Therefore, the slope of the perpendicular line is ¹/₄.
[tex]\boxed{\begin{minipage}{5.8 cm}\underline{Point-slope form of a linear equation}\\\\$y-y_1=m(x-x_1)$\\\\where:\\ \phantom{ww}$\bullet$ $m$ is the slope. \\ \phantom{ww}$\bullet$ $(x_1,y_1)$ is a point on the line.\\\end{minipage}}[/tex]
Substitute the found slope and point (-2, 3) into the point-slope formula to create the equation of the perpendicular line.
[tex]\implies y-3=\dfrac{1}{4}(x-(-2))[/tex]
[tex]\implies y-3=\dfrac{1}{4}(x+2)[/tex]
[tex]\implies y-3=\dfrac{1}{4}x+\dfrac{1}{2}[/tex]
[tex]\implies y=\dfrac{1}{4}x+\dfrac{7}{2}[/tex]
Can a triangle be formed with side lengths 15, 7, and 6? Explain
Answer:no
Step-by-step explanation:
There is a property with triangles that the sum of two sides of a triangle should always be greater than the 3rd side.
Here if we take the two smaller sides their sum is 7 + 8 = 15 which is equal to the third side.
So it is not possible to construct a triangle with sides 7, 8, and 15 respectively.
What is the quotient of 14 divided by 3/4
Answer:
18.6
Step-by-step explanation:
Find the area of the shaded region in the figure. Round results to the nearest uni. Use 3.14
The Area of the shaded part is 3.44 cm²
Area of circle:The formula used to find the Area of a circle is given by
Area of circle = 2πrWhere r is the radius of the circle
Area of Square:The formula used to find the Area of a Square is given by
Area of Square = Side²
Here we know
The radius of the circle = 2m
As we know Area of a Circle = 2πr
=> Area of given circle = 2(3.14)2 = 12.56 cm²
Area of circle = 12.56 cm²
As we can see the circle is inscribed in a square
Then the Length of the side square = diameter of the circle
=> Length of side = 2 × Radius of circle = 2 × 2 cm = 4 cm
Length of side = 4 cm
As we know Area of the square = side²
=> Area of given square = 4 × 4 = 16 cm²
Now using the above value we will friend the area of the shaded part
Area of shaded part = Area of the square - Area of the circle
= 16 cm² - 12.56 cm² = 3.44 cm²
Therefore,
The Area of the shaded part is 3.44 cm²
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or
Rewrite the following equation in standard form.
y = 9x + 6
Answer:
9x-y=10
Step-by-step explanation:
The formula for standard form is Ax + By =C
So, y=9x-10
-1(-9x+y=-10)
9x-y= 10
URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
identify the conic section represented by the equation (x+1)^2+(y-2)^2=8
Step-by-step explanation:
A circle with a center of (-1,2) and a radius
of
[tex]2 \sqrt{2} [/tex]
What is the domain of the inverse of the function graphed below?
Write your answer as a compound inequality.
The domain of the inverse function is {5,6}. And as a compound inequality the domain is 5<x<6.
What is compound inequality?A mathematical statement that expresses the inequality between two inequalities combinedly.
from the graph, we have two inequalities, x>5 and x<6
it can be written as 5<x<6
What is inverse of a function?A function that can be obtained by reversing the primary function is termed as inverse of function. it is denoted by f⁻¹.
The graph shown is got from an inverse function whose domain is {5,6} and ranges are {-2, -4}
The graph also refers the inequalities of x>5 And x<6
compound inequalities of domain 5<x<6
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-8y² - 1 = -8y
Quadratic equation
Answer:
y = (2 + √2)/4 ; y = (2 - √2)/4
Step-by-step explanation:
-8y² + 8y - 1 = 0
8y² - 8y + 1 = 0
discriminant = 64 - 4(8) = 64 - 32 = 32 = 2^4 * 2
y = (8 + [tex]\sqrt{2^4 * 2}[/tex])/16
(8 + 2²√2)/16
(8 + 4 √2) / 16
4(2+√2)/16
(2+√2)/4
y = (8 - [tex]\sqrt{2^4 * 2}[/tex])/16
(8 - 4√2) / 16
4(2-√2)/16
(2-√2)/4
A wood state casket labeled 6/6XX would measure in length 6 feet 6 inches and in width
Answer: 28 inches
Hope this helps!!! :)
Dos lados de un triángulo miden 10 y 14m y el ángulo comprendido entre ellos mide 37º. Calcula el área de dicha región triangular.
From the given parameters, the area of the triangle is 288m².
How to calculate the area of a triangle?
A triangle is a polygon with three angles, three vertices and three sides whose sum of angles is 180⁰
Let the vertices of the triangle be labelled ABC
/AB/=16m
/BC/=45m
<ABC=127⁰
The given information formed an obtuse angled triangle.
Area of the triangle (A) = [tex]\frac{1}{2}[/tex]ACsinB
Substituting the various values in the formula we have;
A=[tex]\frac{1}{2} *16*45*sin127^{0}[/tex]
simplifying the equation to get;
A=8*45*0.7986
A=287.5088
A=288m²
Therefore, the area of the triangle to the nearest whole number is 288m²
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Find how long it takes$ 2500 to double if it is invested at 6 % interest compounded semiannually. Use the formula A=P(1+r/n ) to solve the compound interest problem.
It will take approximately ___years.
It takes 11.55 years for money to double if invested at 6% compound interest.
What is compound interest?
The interest that is calculated using both the principal and the interest that has accrued during the previous period is called compound interest.It differs from simple interest in that the principal is not taken into account when determining the interest for the subsequent period with simple interest.Compound interest is commonly abbreviated C.I. in mathematics.Calculating the answer exactly: P⁰°⁰⁶ⁿ=A .
We don’t know the initial value of the principal but we do know that the accumulated value is double (twice) the principal.
P⁰°⁰⁶ⁿ = 2P
We divide both sides by P
e⁰°⁰⁶ⁿ = 2
Using natural logarithm:
0.06 n = ln(2)
n = ln(2)/0.06
n = 11.55 years
Hence, It takes 11.55 years for money to double if invested at 6% compound interest.
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Music Company A charges a $ 15 membership fee and $ 0.75 each to download a song. Music Company B charges $ 0.90 each to download a song with no membership fee.
a. For what number of songs will both companies charge the same amount? Justify your answer using mathematics.
songs
You anticipate that you will download 150 songs. Which company should you choose if you want to spend the least amount of money? Justify your answer using mathematics.
(i) At a total of 100 Songs the Charges for Company A and Company B will be Equal.
(ii) I would rather suggest to select Company A as the Total Charges to download 150 Songs is $127.5
What is Linear Equation in One Variable?
A linear equation is a one-variable equation of a straight line. The variable's only power is 1. Linear equations in one variable have the form ax + b = 0 and are solved using simple algebraic techniques.
Solution:
Let, Songs Downloaded be x
Total Charges of Company A = 15 + 0.75*x
Total Charges of Company B = 0.9*x
(i) Total Charges by Company A = Total Charges by Company B
15 + 0.75*x = 0.9*x
15 = 0.15*x
x = 100 songs
(ii) Charges by Company A to Download 150 Songs = 15 + 0.75 * 150
= 15 + 112.5 = $127.5
Charges by Company B to Download 150 Somgs = 0.9 * 150 = $135
I would rather suggest to select Company A as the Total Charges to download 150 Songs is $127.5
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Which of the following graphs represents the equation x-5y=27
The graph that shows the straight line → x - 5y = 27 is plotted and attached.
What is the general equation of a straight line?The general equation of a straight line is -
y = mx + c
where -
[m] is slope of the line.
[c] is the y - intercept of the line.
Given is the equation of the line as -
x - 5y = 27
The given equation of the line is -
x - 5y = 27
Rearranging the equation, we get -
5y = x - 27
y = (1/5)x - (27/5)
y = 0.2x - 5.4
Now, refer to the graph attached. The slope [m] of the equation will be -
m = 0.2 and the [y] - intercept will be y = - 5.4.
Therefore, the graph that shows the linear relation → y = 0.2x - 5.4 is plotted and attached.
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A total of 627 tickets were sold for the school play. They were either adult tickets or student tickets. There were 73 fewer student tickets sold than adult tickets. How many adult tickets were sold?
Answer:
350
Step-by-step explanation:
Let "a" represent the number of adult tickets sold and "s" represent the number of student tickets sold. We can set up the following equation to represent the information given:
a + s = 627
s = a - 73
Substituting the second equation into the first equation gives us:
a + (a - 73) = 627
2a - 73 = 627
2a = 700
a = 350
Thus, there were 350 adult tickets sold.
write 500;000 in expanded form in tow different ways
Answer:
500,000 can be written in expanded form in two different ways:
500,000 = 500,000
500,000 = 5 x 100,000 + 0 x 10,000 + 0 x 1,000 + 0 x 100 + 0 x 10 + 0 x 1
In both cases, the expanded form shows the value of each digit in the number. The first way simply lists the number itself, while the second way breaks down the number into its component parts and shows the value of each digit in relation to the place value it holds in the number.
f(x)=x²-25
Find f(9)
Evaluate the expression (x+3)(3x^2-4x-5) ?
3x³ + 5x² - 17x - 15
Step-by-step explanation:Here are the steps for solving your problem:1. Distribute
(x + 3)(3x² - 4x - 5)
x(3x² - 4x - 5) + 3(3x² - 4x - 5)
2. Distribute
x(3x² - 4x - 5) + 3 (3x² - 4x - 5)
3x³ - 4x² - 5x + 3 (3x² -4x - 5)
3. Distribute
3x³ - 4x² - 5x + 3 (3x² -4x - 5)
3x³ - 4x² -5x + 9x² - 12x - 15
4. Combine like terms
3x³ - 4x² -5x + 9x² - 12x - 15
3x³ + 5x² - 5x - 12x - 15
5. Combine like terms
3x³ + 5x² - 5x - 12x - 15
3x³ + 5x² - 17x - 15
Solution:
3x³ + 5x² - 17x - 15
I hope my answer helped you! If you need more information or help, comment down below and I will be sure to respond if I am online. Have a wonderful rest of your day!
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[tex]x=-2 \implies y=(1/3)^{-2}=3^{2}=9\\\\x=-1 \implies y=(1/3)^{-1}=3\\\\x=0 \implies y=(1/3)^0=1\\ \\ x=1 \implies y=1/3\\\\x=2 \implies y=(1/3)^2 =1/9[/tex]
Using these points, the correct graph is shown in option C.
Could some one please help me with this question.
In the octagon, the measurement of the largest exterior angle is 90°.
What is polygon?In a two-dimensional plane, a polygon is a closed object formed of line segments rather than curves. Polygon is a word that combines the words, poly, which means numerous and gon, means sides.
The given exterior angles of the octagon are,
x°, 2x°, 3x°, 4x°, 5x°, 7x°, 8x°, and 10x°.
The sum of the exterior angle of the octagon is 360°.
Implies that,
x + 2x + 3x + 4x + 5x + 7x + 8x + 10x = 360
40x = 360
x = 9
The largest exterior angle = 10 x = 10 × 9 = 90°.
The required largest exterior angle is 90°.
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Select all the equations that are equivalent to y-4 =2/3(x-1)
The equivalent equations of y - 4 = 2/3(x - 1) are y - 4 = 2/3x - 2/3 and y = 2/3x + 10/3
How to determine the equivalent equation?From the question, we have the following parameters that can be used in our computation:
y - 4 = 2/3(x - 1)
We start by expanding the bracket
So, we have the following representation
y - 4 = 2/3x - 2/3
Next, we add 4 to both sides of the equation
This gives
y - 4 + 4 = 2/3x - 2/3 + 4
Evaluate the like terms
So, we have the following representation
y = 2/3x + 10/3
Hence, the equivalent equation is y = 2/3x + 10/3
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Liam spent $5.76 on 12 pounds of potatoes. How much did he spend per pound?
Answer:
$0.48/pound
Step-by-step explanation:
$5.76 divided by 12
Parul attempted to solve an inequality but made one or more errors. Her work and the graph she drew are shown below.
Negative 5 x minus 3.5 greater-than 6.5. Negative 5 x greater-than 10. x greater-than negative 50.
A number line going from negative 110 to positive 10. A closed circle is at negative 50. Everything to the right of the circle is shaded.
She should divide both sides by -5 while multiplying the other side by -5. She also did not replace the > symbol with a symbol.
What is an inequality ?An inequality in mathematics is a relationship that makes a non-equal comparison between two numbers or other mathematical expressions. It is most commonly used to compare the sizes of two numbers on a number line.
From given question :
-5x-3.5>6.5
-5x > 10
X > -50
Since, we have to solve for x
so, we will isolate x on anyone side
step-1:
Add both sides by 3.5
- 5x - 3.5 + 3.5 > 6.5 + 3.5
- 5x > 10
step-2:
Divide both sides by -5
we know that whenever we divide both sides by negative sign , it's inequality gets revered
so, we get
- 5x / -5 < - 50 / -5
we get
x < 10
so,
She should divide both sides by -5 while she multiplied by -5 on other side
and she also did not change the > symbol to a < symbol
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43. What system of inequalities is represented by the graph? (1 point)
-2 -1
2
- C
0
-1
0 1
2
Oy≤3x-2 and y2-4x+2
Oy23x-2 and y≤-4x+2
Oy≤-2x+3 and y 22x-4
Oy2-3x-2 and y ≤4x+2
3 4 question is in the photo. Please help if you can and thank you in advance.
The graph's representation of the inequality system is
y≤3x-2 and y≥-4x+2. So, option a is correct.
What is meant by inequality?One of the basic ideas of social justice theories is the existence of unequal status, rights, and opportunities. In public conversation, it might be confusing because various people often interpret it differently. There are some frequent variants, though. In mathematics, an unjust comparison between two numbers or other mathematical expressions is referred to as an inequality. A relationship between two expressions or values that is not equal to each other is known as inequality in mathematics. So inequality emerges from an imbalance. As an illustration, suppose you wish to get a 250 new bicycle. Different types of inequality are indicated by a variety of notations, including:
A less than sign, such as a, denotes that an is greater than b.
Therefore, The system of inequalities that is represented by the graph is
y≤3x-2 and y≥-4x+2. So, option a is correct.
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