Answer:
(x^2 + 4x) + (y^2 - 18 y) - 5, complete the square on on x by adding to both sides.
Step-by-step explanation:
Answer:
The 4th answer: ((x1+x2)/2 , (y1+y2)/2)
Step-by-step explanation:
To find the midpoint of a segment, you get the average of the x intercepts and y intercepts. So for the x-intercept, add the x-intercepts and divide by 2 and for the y-intercept, add the y-intercepts and divide by two.
((x1+x2)/2 , (y1+y2)/2)
5. Brad is using the following formula to model
the yearly depreciation in the new van he just
y = 25000(.9)^t
bought:
Question a): What is the y-intercept of this
exponential equation?
Question b): By what percentage is the new van
losing value each year?
Question c): What is the decay factor of the van
per year?
The y intercept is $25000, the percentage loss is 10% and the decay factor is 0.9
How to solve an equation?An equation is a mathematical expression that contains two or more numbers and variables linked together by mathematical operations such as exponents, multiplication, division, addition, subtraction and so on.
The standard form of an exponential function is:
y = abˣ
where a is the initial value and b is the multiplication factor.
Let y represent the cost of a van after x years. It is given by:
y = 25000(0.9)ˣ
hence, comparing gives a = 25000, b = 0.9
a) The y intercept is $25000
b) Percentage loss = 1 - 0.9 = 0.1 = 10%
b) Decay factor = b = 0.9
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molly nelson has been collecting temperatures in degrees fahrenheit, daily over the past five spring seasons, to determine the optimal point to plant her heirloom tomatoes. because the difference between each degree is the same, irrelevant of the temperature, this is what type of measurement scale?
The type of measurement scale is interval. A quantitative measuring scale with order, meaningful and equal differences between the two variables, and arbitrary zero presence is known as an interval scale.
In mathematics, an interval is quantified in terms of numbers. Every number between two specific integers is considered to be an interval. Between those two values, this range encompasses all real numbers. Real numbers can be of any type you can imagine. A fourth is a musical interval that spans four staff positions in Western music notation, and a perfect fourth is one that spans five semitones. The interval can be calculated by counting both the lines or spaces that the two notes are on as well as all the lines or spaces in between. A third of a second separates B from D. A sixth space separates A from F.
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a business magazine was conducting a study into the amount of travel required for mid-level managers across the u.s. eighty-six managers were surveyed for the number of days they spent traveling each year. mid-level manager travel days traveling frequency 0 -6 13 7 -13 25 14 -20 35 21 -27 6 28 -34 4 35 and above 3 step 1 of 2 : determine the cumulative frequency of the third class.
The cumulative frequency of the third class is 73. This means that 73 out of the 86 mid-level managers surveyed spent between 14 and 20 days traveling each year.
The cumulative frequency of the third class is the sum of the frequencies of all the classes up to and including the third class. In this case, the frequency of the third class is 35, and the frequencies of the first two classes are 13 and 25, respectively. So, the cumulative frequency of the third class is:
13 + 25 + 35 = 73
This means that 73 out of the 86 mid-level managers surveyed spent between 14 and 20 days traveling each year.
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I NEED HELP ASAPPP PLEASEEEE!!!!
Second bulb: When 3 is the input, the output is _____. When 10 is the input, the output is _______.
When 3 is the input, the output is 10. When 10 is the input, the output is 15.
How to explain the informationIt should be noted that the input for the function is time, measured in hours. The output of the function is energy usage, measured in kilo watts.
From the information, the energy usage of a light bulb is a function. The input for the function is time measured in hours. The output of the function is energy usage, measured in Kilo watts. E (energy) is a function of t (time).
The graph of the function will show energy usage on the y axis and time on the x axis.
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NEED HELP NOW DUE ON FRIDAY 25 POINTS!!!!!!!!!!!!!!
Find the perimeter and area of triangle ABC with altitude BD, given A (-5, 2), B (-3, 5), C (5, 2), and D (-3, 2).
The perimeter and area of triangle ABC are 22.15 units and 15 square units
How to find the perimeter and area of triangle ABCFrom the question, we have the following parameters that can be used in our computation:
A (-5, 2), B (-3, 5), C (5, 2), and D (-3, 2).
For the perimeter, we calculate the side lengths using the distance formula
So, we have
AB = √[(-5 + 3)² + (2 - 5)²] = √13
AC = √[(-5 - 5)² + (2 - 2)²] = 10
BC = √[(-3 - 5)² + (5 - 2)²] = √73
So, we have
Perimeter = √13 + 10 + √73
Evaluate
Perimeter = 22.15 units
For the area, we have
Area = 0.5 * | (x1 * y2 + x2 * y3 + x3 * y1) - (x2 * y1 + x3 * y2 + x1 * y3) |
Area = 0.5 * | (-5 * 5 + -3 * 2 + 5 * 2) - (-3 * 2 + 5 * 5 + -5 * 2) |
Area = 15 square units
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if 800 feet of fencing is used to enclose a rectangular plot of land that borders a river, what is the maximum area that can be enclosed?
Answer:
Below
Step-by-step explanation:
The maximum area of land that can be enclosed is a SQUARE
using the river as one side of the square means there are 3 sides that total 800 ft 800 / 3 = 266 2/3 ft per side
area would then be L x W = 266 2/3 * 266 2/3 = 71111 1/9 ft^2
<1 and <2 are vertical angles and <2 is
supplementary to <3. If m/1 = (4x + 9)° and
m<2 = (8x - 15)°, find m<3.
Since <1 and <2 are vertical angles, they are equal, so m<2 = 8x - 15 = 8(6) - 15 = 39° , Since <2 is supplementary to <3, m<3 = 180° - 39° m<3 = 141°
What is vertical angles ?Vertical angles are angles that are opposite each other when two lines cross. They always have the same measure and are supplementary angles (add up to 180°). Vertical angles are also known as opposite angles or vertically opposite angles. When two lines intersect, four angles are formed. The two pairs of angles opposite each other are known as vertical angles. This is because the lines that they share are vertical to each other, which is why they are also known as vertically opposite angles. Vertical angles can be found in a variety of shapes and figures, including parallelograms, triangles, and quadrilaterals. They can be used to solve many mathematical problems and are an important concept to learn in geometry.
4x + 9 = 8x - 15
4x - 8x = -15 - 9
-4x = -24
x = 6
Therefore, m<2 = 8x - 15 = 8(6) - 15 = 39°
Since <2 is supplementary to <3,
m<3 = 180° - 39°
m<3 = 141°
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why does security with a correlation coefficient -.9 have a smaller standard deviation than correlation coefficient of 0
A correlation coefficient of -0.9 means that there is a strong negative linear relationship between two variables, while a correlation coefficient of 0 means that there is no linear relationship between the two variables.
When two variables have a strong negative linear connection, the values of one variable grow while the values of the other variable fall, and vice versa. When there is no linear relationship, the values of the two variables are more densely packed around the line of best fit, resulting in a smaller standard deviation.
When there is no linear relationship between two variables, the values of the variables are randomly distributed, and there is no consistent link between them. The standard deviation is bigger in this case because the values of the two variables are more spaced apart.
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The number of boys in a school class is given by x+6 The number of girls is given by x-y. What expressions represent the total number of students?
Answer:
x+6+x-y = 2x-y+6
Step-by-step explanation:
Prove the Isosceles Base Angles Theorem
Given: GB GD, GU bisects ZDGB
Prove: ZB ZD
Statements
1. GB = GD
2.
3.
4. GU GU
5.
6. ZB ZD
Reasons
1. Given
2.
3. Definition of bisects
4.
5.
6.
Answer:
The Isosceles Base Angles Theorem states that if two sides of a triangle are equal, then the angles opposite to those sides are equal.
Given: GB = GD
Since GB = GD, triangle ZDGB is isosceles.
By definition of bisects, GU bisects ZDGB.
By the Angle Bisector Theorem, ZG/ZU = GD/GU.
Because GB = GD, ZG = ZU.
By substitution, ZG/ZU = ZG/ZU. Hence, ZB = ZD.
Therefore, ZB ZD, which proves the Isosceles Base Angles Theorem.
The distance around the edge of a circular swimming pool is 24 m.
Calculate the distance from the edge of the pool to the centre of the pool.
Give your answer in metres(m) to 1.dp
will award brainliest to correct answers.
Answer:
The distance around the edge of a circular pool is equal to its circumference. If the circumference is 24 meters, then we can use the formula for circumference of a circle, C = 2πr, to find the radius, r.
C = 2πr
24 = 2πr
12 = πr
r = 12/π
The distance from the edge of the pool to the center is equal to the radius of the pool. So, the distance from the edge of the pool to the center is:
r = 12/π = 12/3.14 = 3.83 meters (rounded to 1 decimal place)
I need help with tease questions
In the expression "3(x+2)," there is only one variable, "x." There are two factors in this expression: "3" and "(x + 2)." The "3" is performing multiplication , so it is multiplying the expression "(x + 2)" by 3, the answer is product.
In mathematics, a variable is a symbol that represents a value that can change or vary. Variables are often used in mathematical equations and formulas to represent unknown or unspecified values.
A factor is an element in a mathematical expression that is being multiplied by another element In general, a mathematical expression can have multiple factors. The factors of a polynomial are the terms that are being multiplied together to form the polynomial.
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each pair of opposite sides of an octagon are parallel. we know three interior angles of the octagon are and what is the degree measure of the largest interior angle of the octagon?
An octagon is a two-dimensional shape with eight sides, the degree measure of the largest interior angle of the octagon.
Each pair of opposite sides of the octagon are parallel. We can use the formula to determine the degree measure of the largest interior angle of the octagon.
The formula used is: 180(n-2)/n, where n represents the number of sides in the shape. In this case, n is 8, so the equation would be: 180(8-2)/8, which would give us the result of 160.
Therefore, the degree measure of the largest interior angle of the octagon is 160 degrees. This can also be calculated by adding up the internal angles of the octagon, as each interior angle is equal to 360 divided by the number of sides, in this case 8. 360/8 = 45, so 8x45 = 360. If we add all the angles together (4x45 + 3x45 + 3x45) we get 360, which is equal to the degree measure of the largest interior angle of the octagon.
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Write your answers as decimals or whole numbers.
The dimensions of the sides DH, VW, and WX are, respectively, 14, 12, and 30.
Similar figures and side measuresTwo figures are known to be similar if the ratio of their similar sides is equal to a constant.
From the polygons given, the following expressions are true;
DH/12 = 21/18
18DH = 12 × 21
18DH = 252
DH = 14
Similarly:
VW/14 = 18/21
21VW = 14 * 18
21VW = 252
VW = 12
Also;
35/WX = 21/18
21WX = 35 * 18
21WX = 630
WX = 30
Therefore the measure of the sides DH, VW and WX are 14, 12 and 30 respectively.
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coseca _cota =tan a/2
if two dice are rolled, what is the probability that the sum of the upturned faces will equal 7? provide your answer as a decimal and round to the hundredths place.
The probability of the sum of the upturned faces equal to 7 is Decimal answer is 0.1666667 and rounding to the hundredths place is 16.6%.
There are 66=36 potential pairs of die rolls because the two are independent of one another. Only the following pairs of rolls total seven out of those. (1,6), (2,5), (3,4), (4,3), (5,2), (6,1). The probability of our two die rolls adding up to 7 would then obviously be: 6 ÷ 36 = 1 ÷ 6 = 0.1666667 rounding to the hundredths place = 16.6%. Probability is simply the possibility that something will happen. When we don't know how something will turn out, we can talk about the possibility of one outcome or the likelihood of several.
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Solve for x and all missing angles
The value of x in the first figure is 10
The value of x in the second figure is 12
How to find xIn the first figure the value of x is solved using the concept of angels on a straight line which is 180 degrees
Therefore,
6x - 10 + 4x + 6 + 7x + 14 = 180
collecting like terms
6x + 4x + 7x + 6 + 14 - 10 = 180
17x + 10 = 180
17x = 180 - 10
17x = 170
x = 10
The second figure is solved using alternate interior angles
4x + 10 = 58
solving for x
4x = 58 - 10
4x = 48
x = 12
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Pleeeeeeeeeeaaaaaaaase help me
If 10 miles is about 16 kilometers how many kilometers is 40
16 × 40 = 640
Therefore, 40 miles is 640 kilometers.
Please help me. NEED THIS ASAP
The solution to the system of Inequalities is gotten as; (1, 1)
How to solve Inequalities Graphically?The system of inequalities given for which we are to graph are;
y ≤ x + 2
y < -2x - 1
Now, to find the solution of the system of Inequalities, we will graph both of them on the same graph and the solution will be the point at which both lines intersect each other.
The graph attached shows that the solution of the inequalities is (1, 1)
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what is the correct answers
The inequality to model the situation will be 24b ≤ 250
How to calculate the inequalityInequalities are simply created through the connection of two expressions. In this case, it should be noted that the expressions in an inequality are not always equal. Inequalities implies that the expressions are not equal. Here, they are denoted by the symbols ≥ < > ≤.
Based on the information, the inequality to model the situation will be 24b ≤ 250. The number of baseball will be:
24b ≤ 250
b ≤ 250 / 24
b ≤ 10
The number of baseball will be 10 or less.
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Solve for p. 25(p − 949) = 650
Answer:
p = 975
Step-by-step explanation:
Divide both sides by 25
25 (p - 949)
-------------------- = 650/25
25
Then Simplify
p - 949 = 26
Move 949 to the right side
And For your answer you will get:
p = 975 (sorry if i got it wrong)
how much would $20,000 due in 50 years be worth today if the discount rate were 7.5%?
$20,000 due in 50 years would be worth approximately $6,307.51 today, if the discount rate were 7.5%.
How to calculate the present valueThe present value of $20,000 due in 50 years, discounted at 7.5%, can be calculated using the formula:
PV = FV / (1 + r)^t
Where:
PV = present value
FV = future value ($20,000)
r = discount rate (7.5%)
t = number of years (50)
Plugging in the numbers, we get:
PV = $20,000 / (1 + 0.075)^50
PV = $20,000 / (1.075)^50
PV = $20,000 / 3.16907
PV = $6,307.51
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a brain-building website claims that it can improve concentration, problem solving, and creativity through simple game-like experiences. darius wants to test the website's claims by creating a hypothesis and designing a study around the games provided on the website. in order to develop a solid hypothesis, darius should:
To form a solid hypothesis, Darius needs to have defined parameters for concentration, problem-solving, and creativity, a designed measurable methodology, and a control group for comparison. An example of a hypothesis could be that individuals who use the brain-building website will display significant improvement compared to those who don't. Darius could test his hypothesis by measuring the changes in the parameters in two groups of participants at different time intervals.
Explanation:Darius needs to focus on three primary aspects to construct a hypothesis that can test the claims of the brain-building website. These include clearly defining parameters for concentration, problem-solving skills, and creativity, designing a measurable methodology to observe any potential changes in these parameters, and determining a control group for comparison with the group using the website.
An example of a hypothesis might be, 'Individuals who regularly engage with the brain-building website for a period of six weeks will display a statistically significant improvement in validated measures of concentration, problem-solving skills, and creativity compared to a control group of similar individuals not using the website.'
Darius could then design a study where one group of participants regularly use the website over a period of time while another group does not, measuring changes in the defined parameters in both groups at the start, middle, and end of the study period.
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lisa prints parking passes for the baseball stadium a month in advance. the stadium parking lot holds 20,000 cars. lisa prints 240,000 passes. how many home games are scheduled next month?
If the stadium parking lot holds 20,000 cars and lisa prints 240,000 passes then 12 home games are scheduled next month.
Given that Lisa prints parking passes for the baseball stadium a month in advance the stadium parking lot holds 20,000 cars.
Lisa prints 240,00 passes,
We have to find the number of home games are scheduled next month.
To find this we have to division of 240000 by 20000
240000/20000 = 12
Divide Two lakh forty thousand by twenty thousand we get twelve.
By means of division we get 12 Hence, 12 mant home games are scheduled next month
A division is a process of splitting a specific amount into equal parts.
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Directions: Based on the information given in the following problem, compute the gross pay.
Regular hours worked: 40
Overtime hours worked: 4
Regular rate of pay: $7.80 per hour
Round your answers to two decimal places.
The gross pay for the given service is $343.2.
What is gross pay?Gross pay is what employees earn before taxes, benefits and other payroll deductions are withheld from their wages.
Given that, the regular salary of some service is $7.80 per hour, we need to calculate the gross payment with over time hour, which is 4 hours and regular hour of work is 40 hours.
Therefore,
To find, gross payment, we will multiply by 7.80 by 4 and 40, and add both to get the regular salary,
Gross payment = 7.80 × 4 + 7.80 × 40
= 7.80(4+40)
= 7.80 × 44
= 343.2
Hence, the gross pay is $343.2
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If 65% of a number is 39 and 35% of the same number is 21, find 100% of that number. Help!
Answer:
60
explanation
divide 39 by 65%,
you will get
39 / ( 65/ 100)
= 39 * (100/65)
= 39 * (20 /13)
= 3*20
= 60
Question 6
Isosceles trapezoids ABCD and PQRS are similar. The perimeter of ABCD is 72.8 inches and
the perimeter of PQRS is 91 inches. If the legs of ABCD measure 12.4 inches, what are the measures of the legs of PQRS?
O 19.375 inches
O 30.6 inches
O 15.5 inches
O9.92 inches
The solution is Option C.
The measures of the legs of the isosceles trapezoid is given by the proportion equation L₂ = 15.5 inches
What is a trapezoid?The Trapezoid is a 4 sided polygon. Two sides of the shape are parallel to each other and they are termed as the bases of the trapezoid. The non-parallel sides are known as the legs or lateral sides of a trapezoid.
There are three types of trapezoids , and those are given below:
a) Isosceles Trapezoid
b) Scalene Trapezoid
c) Right Trapezoid
The area of the Trapezoid is given by
Area of Trapezoid = ( ( a + b ) h ) / 2
where , a = shorter base of trapezium
b = longer base of trapezium
h = height of trapezium
Given data ,
Let the measure of legs of PQRS trapezoid be L₂
Let the first trapezoid be represented as T₁ = ABCD
The measure of the legs of T₁ = L₁
And , Let the second trapezoid be represented as T₂ = PQRS
The measure of the legs of T₂ = L₂
The perimeter of T₁ = 72.8 inches
The perimeter of T₂ = 91 inches
The measure of L₁ = 12.4 inches
Now , the two trapezoids are similar
So , measure of L₁ / perimeter of T₁ = measure of L₂ / perimeter of T₂
Substituting the values in the equation , we get
( 12.4 / 72.8 ) = L₂ / 91
Multiply by 91 on both sides of the equation , we get
The measure of L₂ = ( 12.4 x 91 ) / 72.8
The measure of L₂ = 15.5 inches
Hence , the measure of legs of trapezoid is 15.5 inches
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Select the correct answer. What is an approximate solution to this equation? 4/x-5= √x+3+2
Answer:
x = 0.37686455
Step-by-step explanation:
Answer: x≈0.37686455
Step-by-step explanation:
Create an original expression of eight terms that includes at least three operations and two different variables.
Therefore , the solution of the given problem of expression comes out to be the 8 expressions are given below.
Describe this expression.Addition, multiplication, division, and other mathematical operations are required. When combined, they produce the following: A mathematical operator, some data, and an equation A statement of fact contains values, parameters, and operations like additions, subtractions, multiplications, and divisions. It is possible to contrast and compare various phrases and words.
Here,
Given :
Original expression of eight terms including 3 operations are:
=> 10*2-10 =10
=> 100 * 2 -100 = 100
=> 50/2 - 10 = 15
=> 400/2 - 100 + 100 = 200
=> 500 - 100 + 200 = 600
=> 10/2 - 5=0
=> 6 * 10 - 8 = 52
=> 10*8 - 8 =72
Therefore , the solution of the given problem of expression comes out to be the 8 expressions are given below.
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