Two vertical lines in geometry means parallel.
Answer:
|| means 'parallel to'.
Step-by-step explanation:
If we have 2 parallel lines AB and CD we can write it as:
AB || CD.
CITY PLANNING A city is planning to construct a new park.
Based on the blueprints, the park is the shape of an isosceles
triangle. If
represents the base of the triangle and
4x²+27x-7 represents the height, write and simplify an
3x²+23x+14
expression that represents the area of the park.
3x²-10x-8
4x²+19x-5
The expression that represents the area of the park is (1/2) * (x-4)/(x+5).
How to find the expression that represents the area of the park?We shall first find the area of a triangle, using the formula:
Area = (1/2) * base * height
Given:
The base of the triangle is represented by the expression: (3x²-10x-8)/(4x²+19x-5)
The height is represented by: (4x²+27x-7)/(3x²+23x+14)
Then, put the values into the formula to find the expression:
Area = (1/2) * [(3x²-10x-8)/(4x²+19x-5)] * [(4x²+27x-7)/(3x²+23x+14)]
We first simplify each of the fractions:
Area = (1/2) * [(3x²-10x-8)/(4x²+19x-5)] * [(4x²+27x-7)/(3x²+23x+14)]
= (1/2) * [(3x²-10x-8)/(4x²+19x-5)] * [(4x²+27x-7)/(3x²+23x+14)]
= (1/2) * [(3x²-10x-8)/(4x²+19x-5)] * [(4x²+27x-7)/(3x²+23x+14)]
Next, factorize the quadratic expressions in the numerator and denominator:
Area = (1/2) * [(3x+2)(x-4)/(4x-1)(x+5)] * [(4x-1)(x+7)/(3x+2)(x+7)]
= (1/2) * [(3x+2)(x-4)(4x-1)(x+7)] / [(4x-1)(x+5)(3x+2)(x+7)]
Then, cancel the common factors between the numerator and the denominator:
In the numerator, we have (3x+2), (4x-1), and (x+7), and in the denominator, we also have (4x-1), (3x+2), and (x+7).
Area = (1/2) * (x-4)/(x+5)
Therefore, the simplified expression that represents the area of the park is (1/2) * (x-4)/(x+5).
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I need help whats 5t = 7 1/2
Answer: t= 3/2
Step-by-step explanation: 5/ 7 1/2 = 3/2
Answer:
t = 7/10 = 0.700
Step-by-step explanation:
STEP
1
:
1
Simplify —
2
Equation at the end of step
1
:
1
5t - (7 • —) = 0
2
STEP
2
:
Rewriting the whole as an Equivalent Fraction
2.1 Subtracting a fraction from a whole
Rewrite the whole as a fraction using 2 as the denominator :
5t 5t • 2
5t = —— = ——————
1 2
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator :
2.2 Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
5t • 2 - (7) 10t - 7
———————————— = ———————
2 2
Equation at the end of step
2
:
10t - 7
——————— = 0
2
STEP
3
:
When a fraction equals zero :
3.1 When a fraction equals zero ...
Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.
Here's how:
10t-7
————— • 2 = 0 • 2
2
Now, on the left hand side, the 2 cancels out the denominator, while, on the right hand side, zero times anything is still zero.
The equation now takes the shape :
10t-7 = 0
Solving a Single Variable Equation:
3.2 Solve : 10t-7 = 0
Add 7 to both sides of the equation :
10t = 7
Divide both sides of the equation by 10:
t = 7/10 = 0.700
One solution was found :
t = 7/10 = 0.700
A factory process requires 3 steps to finish a product. The steps each have a mean completion time of
= 10 seconds and a standard deviation of g = 5 seconds. The time it takes to complete each step is
independent from the other steps. Let T be the total completion time of the 3 steps on a randomly chosen
product.
Find the mean of T.
HT=
seconds
Use a whole number.
Answer:
square root 75
Step-by-step explanation:
khan
Using the normal distribution, the mean of T is of 30 seconds.
How to get the z scores?If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.
If we have
\(X \sim N(\mu, \sigma)\)
\(Z = \dfrac{X - \mu}{\sigma}, \\\\Z \sim N(0,1)\)
The mean of T is 10 seconds
A normal distribution has two parameters: Mean and standard deviation .
The given parameters are the mean completion time of each step, μ = 10 seconds
The standard deviation, σ = 5 seconds.
For the total completion, there are 3 instances, hence ,n = 3(10)
Thus, the mean of T is of 30 seconds.
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7(m – 6) m = 8 Evaluate this expression for the given value(s) of the variable(s).
Answer:
14
Step-by-step explanation:
7(8-6)
So, PEMDAS
7(2)= 14
14 is the answer.
Stephanie is earning simple interest of 3.5% on her money each month. She currently has $1325 in her account. What will her balance be in 5 months?
Answer:
$1556.88
Step-by-step explanation:
Since Stephanie is earning simple interest and not compound interest, we can multiply her interest rate for each month by how many months we are calculating for.
0.035 x 5 = 0.175
Then multiply that by her current balance but change the 0 in front of the 0.175 to a 1 to reduce the number of steps we have to take. (It automatically adds what is earned in interest to her current balance.)
1.175 x 1325 = 1556.875
What are the Domain and Range of this graph in set notation?
The domain is {│∈ℝ }
The range is {∈ℝ│ }
Answer:
The domain is {x│x∈ℝ }
The range is {y│y≤-3 }
Step-by-step explanation:
The domain is the values that x can take
x is all real numbers
The domain is {x│x∈ℝ }
The range is the values that y can take
Y must be less than or equal to -3
The range is {y│y≤-3 }
1 - 3x = -5
How do you solve it step by step
Answer:
x = 2
Step-by-step explanation:
1 - 3x = -5
Subtract 1 from each side
1-3x-1 = -5-1
-3x = -6
Divide each side by -3
-3x/-3 = -6/-3
x = 2
Can you please help me?
Answer:
is below
Step-by-step explanation:
(A) 1/10
(B) 3/10
(C) 2/10
Hope this helps
Segments and Angles again.. this is a struggle for me
The calculated length of the segment AD is 14
How to determine the length of the segment ADFrom the question, we have the following parameters that can be used in our computation:
B is the midpoint of AC
BD = 9 and BC = 5
Using the above as a guide, we have the following:
AB = BC = 5
CD = BD - BC
So, we have
CD = 9 - 5
Evaluate
CD = 4
So, we have
AD = AB + BC + CD
substitute the known values in the above equation, so, we have the following representation
AD = 5 + 5 + 4
Evaluate
AD = 14
Hence, the length of the segment AD is 14
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Determine whether this table represents a probability distribution.xP(x)00.0510.120.330.55Yes, it is a probability distributionNo, it is not a probability distribution
Recall that to determine if a table represents a probability distribution, the sum of the probabilities must add up to 1, and all the probabilities have to be positive numbers less or equal to 1.
Now, notice that:
\(0.05+0.1+0.3+0.55=1.\)From the table, we notice that all the given probabilities are positive numbers between 0 and 1. Therefore, we can conclude that the given table represents a probability distribution.
Answer:Yes, it is a probability distribution.
56. Christy and Adam went to Wal-mart to buy a few items. They bought a pack of
chicken for $12. 97, a gallon of milk for $4. 97 , 4 bags of chips for 2 for $5. 00, and
10 Sam's Choice 2 liter drinks for $. 67 each. When they got to the register the clerk
told them that the chicken was on sale for 30% off the price. How much did they
spend in all?
Christy and Adam spent a total of $30.749 at Walmart.
To calculate the total amount spent, we need to determine the individual costs of each item and then sum them up.
1. The pack of chicken is priced at $12.97.
2. The gallon of milk costs $4.97.
3. They bought 4 bags of chips for a deal of 2 for $5.00. This means each bag costs $5.00 / 2 = $2.50. So, the total cost of 4 bags of chips is 4 * $2.50 = $10.00.
4. They purchased 10 Sam's Choice 2-liter drinks for $0.67 each. The total cost of these drinks is 10 * $0.67 = $6.70.
So far, the total cost without considering any discounts is:
$12.97 (chicken) + $4.97 (milk) + $10.00 (chips) + $6.70 (drinks) = $34.64.
However, there was a 30% discount on the pack of chicken. To calculate the discounted price, we need to find 30% of $12.97, which is (30/100) * $12.97 = $3.891.
The discounted price of the pack of chicken is $12.97 - $3.891 = $9.079.
Therefore, the final total amount spent is:
$9.079 (discounted chicken) + $4.97 (milk) + $10.00 (chips) + $6.70 (drinks) = $30.749.
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whats 2+7
a. 14
b. 19
c.88383838837
Answer:
9
Step-by-step explanation:
Was this a joke or something
a circle has a circumference of 615.44615.44615, point, 44 units. what is the radius of the circle? use 3.14 for \piπpi and enter your answer as a decimal. units
Answer:
98 units.
Step-by-step explanation:
Circumference = 2 * pi * radius
615.44 = 2 * 3.14 * r
r = 615.44 / (2 * 3.14)
=2 * 3.14
= 98 units.
The angle between the top of a building and a point 80 feet away from the base (on level ground) is 70° . To the nearest foot, how tall is the building?
Answer: 220 feet tall
Step-by-step explanation:
1. Draw!
2. Use trigonometric ratios to solve for the height (Remember SOH CAH TOA)
Answer:
The building is 220 ft tall
Step-by-step explanation:
If a figure is a square, its diagonals divide it into isosceles triangles.
p: A figure is a square.
q: A figure's diagonals divide into isosceles triangles.
Which represents the converse of this statement? Is the converse true?
The converse of the statement "If a figure is a square, its diagonals divide it into isosceles triangles" would be:
"If a figure's diagonals divide it into isosceles triangles, then the figure is a square."
The converse statement is not necessarily true. While it is true that in a square, the diagonals divide it into isosceles triangles, the converse does not hold. There are other shapes, such as rectangles and rhombuses, whose diagonals also divide them into isosceles triangles, but they are not squares. Therefore, the converse of the statement is not always true.
Therefore, the converse of the given statement is not true. The existence of diagonals dividing a figure into isosceles triangles does not guarantee that the figure is a square. It is possible for other shapes to exhibit this property as well.
In conclusion, the converse statement does not hold for all figures. It is important to note that the converse of a true statement is not always true, and separate analysis is required to determine the validity of the converse in specific cases.
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Can someone help me with this. Will Mark brainliest.
Answer:
The answer is 17ft hope this helps
Answer:
17feet
Step-by-step explanation:
Please mark as brainliest
What is the area of the triangle?
4
:10
2
units
Answer:
Your answer is 20
Step-by-step explanation:
as the formula 1/2*4*10=20.
hope it help you if yes then please make me the brainiest.
Thank you
parshv
1. Why is it so important to compute a measure of
variability?
2. Explain what nominal and ordinal data
mean.
Computing a measure of variability is important to understand the spread and dispersion of data, providing insights into the consistency and reliability of the dataset.
Nominal data represent categories or labels without an inherent order, while ordinal data have categories with a meaningful order or ranking, but the differences between categories may not be quantifiable.
Computing a measure of variability is important because it provides insights into the spread and dispersion of data points within a dataset. Measures of variability, such as range, variance, and standard deviation, allow us to understand the extent to which data points deviate from the central tendency (such as the mean or median). This information is valuable in various fields, including statistics, research, and decision-making processes. By quantifying variability, we can assess the consistency, stability, and reliability of data, identify outliers or extreme values, compare datasets, and evaluate the effectiveness of interventions or treatments.
Nominal data refer to categories or labels that have no inherent order or numerical value. They simply represent different groups or classifications. Nominal data are used to differentiate or identify distinct entities or attributes. For example, in a survey asking participants about their favorite color, the options may be red, blue, or green. There is no natural order or ranking associated with these colors. Ordinal data, on the other hand, have categories with an inherent order or ranking. Although the differences between categories may not be quantifiable or equal, there is a meaningful order. Examples of ordinal data include survey ratings or Likert scales, where participants express their agreement or disagreement on a scale from "strongly agree" to "strongly disagree." The order of the responses reflects varying levels of agreement without indicating precise numerical differences between them.
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Me ayudan redondea tu respuesta ala centésima más cercana
Using a trigonometric relation we can see that:
CA = 5.03
How to find the value of AC?On the image we can see a right triangle, we can see that the angle B is 40°, and the length of BC is 6 units.
We want to get CA, which is the opposite cathetus, if we use the trigonometric relation:
tan(B) = (opposite cathetus)/(adjacent cathetus)
Then we will get:
tan(40°) = CA/6
Solving for CA
CA = 6*tan(40°)
CA = 5.03
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Apply the distributive property to create an equivalent expression.
(6e - 3f - 4)\cdot 2 =(6e−3f−4)⋅2=? #algebra
Answer:
12e - 6f -8
Step-by-step explanation:
(6e−3f−4)⋅2
Multiply the 2 by each term inside the parentheses
2*6e -2*3f -4*2
12e - 6f -8
what is the sum of (2x-5y) and (x+y)?
Answer:
= 3x -4y
Step-by-step explanation:
Which type of graph is most appropriate for graphing heart rate data over the time period of 120 seconds?.
The most appropriate type of graph for graphing heart rate data over the time period of 120 seconds would be a line graph or a scatter plot.
A line graph is useful when we want to show the trend or changes in a variable over time. It would allow us to plot the heart rate on the y-axis and the time on the x-axis, connecting the data points with a line to represent the change in heart rate over the 120-second period.
A scatter plot can also be used to display heart rate data over time. In a scatter plot, each data point represents a heart rate measurement at a specific time point. By plotting the heart rate on the y-axis and the time on the x-axis, we can observe the distribution of the data points and any potential patterns or trends.
Ultimately, the choice between a line graph and a scatter plot depends on the specific nature of the data and the purpose of the graph. If the heart rate data is continuous and measured at regular intervals, a line graph would be a suitable choice. If the heart rate data is more discrete or irregularly measured, a scatter plot would be more appropriate.
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What is the standard form and the factored form
Answer:
See belowStep-by-step explanation:
The factored form, use variables/numbers outside the square:
(x + 6)(x - 4)The standard form, use variables/numbers inside the square:
x² + 6x - 4x - 24 = x² + 2x - 24Factored form
(x+6)(x-4)Simplify to standard form
x(x-4)+6(x-4)x²-4x+6x-24x²+2x-24Ethan started at point A and walked 30 m south, 80m west and a further 20m south to arrive at point B. Zara started at point A and walked in a straight line to point B. How much further did Ethan walk than Zara?
AB = √6800= 82.46 Zara walked a distance of 82.46 m from point A to point B.
Ethan started at point A and walked 30m south and 80m west and an additional 20m south, arriving at point B. On the other hand, Zara started at point A and walked in a straight line to point B. We are to determine how much further Ethan walked than Zara.
Let us first find out the distance Ethan walked: Ethan walked 30 m south and then 20 m south to arrive at point B. Therefore, Ethan covered a total distance of 30 + 20 = <<30+20=50>>50 m.
Now, let's calculate the distance that Zara walked to arrive at point B. The direction of Zara's movement is not given, so we can assume that she walked in a straight line from point A to point B. Let the point where she cuts Ethan's path be C, as shown in the figure below.
As per the given data, AC = 80 m and CB = 20 m. Using Pythagoras' theorem, we can find AB, which is the distance Zara walked. The square of the hypotenuse AB is equal to the sum of the squares of the other two sides, AC and CB. That is, AB2 = AC2 + CB2= (80)2 + (20)2= 6400 + 400= 6800
Finally, we can determine how much further Ethan walked than Zara by finding the difference between their distances. Hence, Ethan walked 50 - 82.46 = -32.46 m less than Zara. We can conclude that Ethan walked 32.46 m less than Zara.
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Determine the solution to the equation. 8+4x=2x+8+2x A Infinite B One Solution C No Solution
After solving the given equations the answer is an Infinite solution. Hence, option A is correct
What is an equation?Mathematical expressions with two algebraic symbols on either side of the equal (=) sign are called equations.
This relationship is illustrated by the left and right expressions being equal to one another. The left-hand side equals the right-hand side is a basic, straightforward equation.
As per the given equation in the question,
8 + 4x = 2x + 8 + 2x
Firstly, let's write the given equation in a simplified manner,
8 + 4x = 8 + 4x
As we can see that LHS = RHS, which means that both equations are the same then which means they will give infinite solutions.
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The function f has the property that, for all x, 5(f)x=f(5x). If f(20)=40, what is the value of f(4)?
Using the given property, we conclude that:
f(4) = 8
What is the value of f(4)?
We know that our function has the property:
5*f(x) = f(5*x)
Now, we also know that:
f(20) = 40
Notice that we can rewrite:
f(20) = f(5*4)
Using the above property, we know that:
f(20) = f(5*4) = 5*f(4) = 40
Using the last part:
5*f(4) = 40
f(4) = 40/5 = 8
f(4) = 8
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On its municipal website, the city of Tulsa states that the rate it charges per 5 CCF of residential water is $21.62. How do the residential water rates of other U.S. public utilities compare to Tulsa's rate? The data shown below ($) contains the rate per 5 CCF of residential water for 42 randomly selected U.S. cities.10.38 9.08 11.7 6.4 12.32 14.43 15.4610.02 14.4 16.08 17.5 19.08 17.88 12.7516.7 17.25 15.54 14.7 18.81 17.89 14.818.32 15.95 26.75 22.22 22.66 20.88 23.3518.95 23.6 19.16 23.65 27.7 26.95 27.0426.89 24.58 37.76 26.41 38.91 29.36 41.55(a)Formulate hypotheses that can be used to determine whether the population mean rate per 5 CCF of residential water charged by U.S. public utilities differs from the $21.62 rate charged by Tulsa. (Enter != for ≠ as needed.)H0:Ha:(b)What is the test statistic for your hypothesis test in part (a)? (Round your answer to three decimal places.)What is the p-value for your hypothesis test in part (a)? (Round your answer to four decimal places.)(c)At α = 0.05, can your null hypothesis be rejected? What is your conclusion?Do not reject H0. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.Reject H0. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.Do not reject H0. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.Reject H0. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.(d)Repeat the preceding hypothesis test using the critical value approach.State the null and alternative hypotheses. (Enter != for ≠ as needed.)H0:Ha:Find the value of the test statistic. (Round your answer to three decimal places.)State the critical values for the rejection rule. Useα = 0.05.(Round your answers to three decimal places. If the test is one-tailed, enter NONE for the unused tail.)test statistic≤test statistic≥State your conclusion.Do not reject H0. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.Reject H0. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.Do not reject H0. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.Reject H0. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.
The null hypothesis for the data will be 21.62 and the alternate hypothesis is 2.02 for the p-value for the data is 0.2253 .
The charge at which anything happens is referred to as the velocity at which it happens.
The required details for mean rate :
(a) H0: µ = 21.62
Ha: µ ≠ 21.62
(b) t = -1.231
p-value = 0.2253
(c) Stop rejecting H0 right now. No longer significantly different from the domestic water tariff in Tulsa, the suggested household water charge per five CCF for the entire USA.
(d) H0: µ = 21.62
Ha: µ ≠ 21.62
t = -1.231
check statistic ≥ 2.020
Don't dismiss H0 any longer. The suggested five CCF residential water charge for the entirety of the USA is no longer significantly different from the five CCF residential water tariff in Tulsa.
The P-value is higher at 0.05, the level of significance. The impact in this instance is negligible. The attempt to reject the null hypothesis failed.
The conclusion is that there is insufficient statistical support to determine whether other American cities have a different mortality rate than Tulsa.
The crucial values for t at this level of significance are t=2.019.
Given that the statistic t = -1.15 is inside the acceptance range in this case, the null hypothesis is not disproved.
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An angle measures 46 degrees. What is the measure of its supplement?
Step-by-step explanation:
180°- 43° = 137°
because when angles are supplementary the add up to 180 degrees and since we have one of the angles we can easily find the other =>
Asia is the largest of the world’s seven continents with an area of approximately 1.7 times 10 Superscript 7 square miles. Australia, the smallest continent, has an area of approximately 3.1 times 10 Superscript 6 square miles.
How much larger is Asia than Australia? Express the answer in scientific notation.
1.40 times 10 Superscript 6 square miles
2.93 times 10 Superscript 6 square miles
1.39 times 10 Superscript 7 square miles
2.01 times 10 Superscript 7 square miles
The amount of area larger is Asia than Australia will be 1.39 × 10⁷. Then the correct option is C.
What is subtraction?It simply implies subtracting something from an entity, group, location, etc. Subtracting from a collection or a list of ways is known as subtraction.
Asia is the largest of the world’s seven continents, with an area of approximately 1.7 times 10⁷ square miles.
Australia, the smallest continent, has an area of approximately 3.1 times 10⁶ square miles.
Then the amount of area larger is Asia than Australia will be
⇒ 1.7 × 10⁷ – 3.1 × 10⁶
⇒ 1.7 × 10⁷ – 0.31 × 10⁷
⇒ 1.39 × 10⁷
Then the correct option is C.
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area of rhombus whose diagonals are 9cm and 4cm is
Answer:
18 cm²
Step-by-step explanation:
you simply take (d1 × d2) / 2
and there you have it : )
(d = diagonals)