Using the piecewise function graphed in this problem, we have that:
1. The x-axis represents the time in hours.
2. The y-axis represents the distance in miles.
3. The person traveled 30 miles in those 4 hours.
4. The person traveled at a rate of 7.5 miles per hour in Section A.
5. In section B, the person remained stopped 30 miles from her starting point for 2 hours.
6. The velocity for Section B was of 0 miles per hour.
7. The person traveled 30 miles in Section C.
8. 8. The speed in Section D was of 20 miles per hour.
9. The person was moving at the highest speed in Section C, at a rate of 30 miles per hour.
10. The farthest distance traveled was of 60 miles in Section D.
11. A person had an appointment 30 miles away from their home, and due to slow traffic had to leave early. Then the appointment lasted 2 hours, then the person went to another place 30 miles away to do something then came back home.
What is a piecewise-defined function?A piecewise-defined function is a function that has different definitions, depending on the input of the function.
From the graph, the function has four different definitions, in intervals, A, B, C and D.
From the axis of the graph, we have that:
1. The x-axis represents the time in hours.
2. The y-axis represents the distance in miles.
Considering that the graph has points (0,0) and (4,30), we have that:
3. The person traveled 30 miles in those 4 hours.
The velocity is given by distance divided by time, hence:
30/4 = 7.5.
4. The person traveled at a rate of 7.5 miles per hour in Section A.
In Section B, the person remains at the same position, hence:
5. In section B, the person remained stopped 30 miles from her starting point for 2 hours.
The distance was of 0, hence:
6. The velocity for Section B was of 0 miles per hour.
In Section C, from the y-axis of the graph, the distance traveled was:
60 - 30 = 30 miles.
7. The person traveled 30 miles in Section C.
For Section D, the person traveled 60 miles in 10 - 7 = 3 hours, hence:
60/3 = 20.
8. The speed in Section D was of 20 miles per hour.
10. The farthest distance traveled was of 60 miles in Section D.
In Section C, the person traveled 30 miles in one hour = 30 miles per hour, hence:
9. The person was moving at the highest speed in Section C, at a rate of 30 miles per hour.
For item 11, a situation that can be modeled is:
A person had an appointment 30 miles away from their home, and due to slow traffic had to leave early. Then the appointment lasted 2 hours, then the person went to another place 30 miles away to do something then came back home.
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Evaluate the Function at each specified value
1. (a) The answer to the given part is 12.56
(b)the answer to the given part 50.24
(c) the answer to the given part153.86
2. (a)the answer to the given part ₋1
(b)the answer to the given part 2
(c) the answer to the given part4
3. (a)the answer to the given part 12
(b) the answer to the given part5
(c) the answer to the given part1
Given,
1. A(r) = πr²
a. A(2) = π(2)²
= π4
= 3.14 ₓ 4
= 12.56
b. A(4)
A(r) = πr²
= π(4)²
= π16
= 50.24
c. A(7)
A(r) = πr²
= π(7)²
= π(49)
= 153.86
2. s(t) = t² ₋ 2t ₊ 1
a. S(0) = 0² ₋ 2(0) ₋ 1
= ₋1
b. S(3) = 3² ₋ 2(3) ₋ 1
= 9 ₋ 6 ₋ 1
= 2
c. S(₋1) = (₋1)² ₋ 2(₋1) ₊ 1
= 1 ₊ 2 ₊ 1
= 4
3. (a) f(₋3) which means x ≤ ₋1
therefore, f(₋3) = 4 ₋ 3x
= 4 ₋ 3(₋3)
= 4 ₊ 9
= 12
(b) f(0) which means ₋1<x<1
therefore, value of f(0) = 5.
(c) f(2) which means x≥ 1
therefore, value of f(2) = x² ₋ 3
= 2² ₋ 3
= 4 ₋ 3
= 1
hence, we get the desired results.
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Which expresses the power of a product property?
The expression that represents the power of a product property is a^m * a^n = a^(m + n)
What is the power of a product property?This power of a product property states that when two powers that have the same base are multiplied, the exponents of the bases are added
How to determine the expression?The statement is given as
The power of a product property
The definition above implies that the representation of the power of a product property is
x^m * x^n = x^(m + n)
Using the above as a guide, we have
a^m * a^n = a^(m + n) -- option (d)
Hence, the expression that represents the power of a product property is a^m * a^n = a^(m + n)
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Simplify. 4√32 m⁷n⁹
The simplification of the given expression can be expressed as: 8√2m⁷n⁹
What is simplification?
Simplification is defined as a final operation that shows the result of a reduction of a number or set without altering its value.
In other words, when we simplify we express the same value in a shorter or summarized form.
The algebraic expression that we must simplify to its minimum expression is:
4√32 m⁷n⁹, we can see that it is an expression that has two variables
we reduce the value of the square root
√32 = √4x4x2 = √4²x2 = 4√2
4(4√2)m⁷n⁹ Variables are irreducible
8√2m⁷n⁹
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There is electric toothbrush rotate the brush 125 times per second brushes her teeth for 2 minutes twice a day how many rotations does high electric toothbrush make in one week
Answer: 210,000
Step-by-step explanation:
there are 120 seconds in 2 minutes.
125 times 120= 15,000
15,000 times 2= 30,000
so it spins 30,00 times in a day.
30,000 times 7=210,000
so it spins 210,000 times in a week.
Calculate the percent increase or decrease between the starting and ending quantities below. Round your answer to one decimal place. Continue on the following page.
1. Start: 3 End: 10
2. Start: 9 End: 20
3. Start: 100 End: 85
4.Start: 45 End: 20
5. Start: 30 End: 60
The percent increase and decrease between the given starting and ending quantities above are as follows:
Percentage increase = 233.3%.Percentage increase = 122.2%.Percentage decrease = 17.7%.Percentage decrease = 125%.Percentage increase = 100%.The types of percentage.In Mathematics, there are two main types of percentage and these include the following:
Percentage decreasePercentage increaseMathematically, percentage increase can be calculated by using this formula:
Percentage increase/decrease = [Final value - Initial value]/Initial value × 100
Substituting the given parameters into the formula, we have;
Percentage increase = [10 - 3]/3 × 100
Percentage increase = 7/3 × 100
Percentage increase = 233.3%.
Start: 9 End: 20.Percentage increase = [20 - 9]/9 × 100
Percentage increase = 11/9 × 100
Percentage increase = 122.2%.
Start: 100 End: 85.Percentage decrease = [100 - 85]/9 × 100
Percentage decrease = 15/85 × 100
Percentage decrease = 17.7%.
Start: 45 End: 20.Percentage decrease = [45 - 20]/20 × 100
Percentage decrease = 25/20 × 100
Percentage decrease = 125%.
Start: 30 End: 60.Percentage increase = [60 - 30]/30 × 100Percentage increase = 30/30 × 100
Percentage increase = 100%.
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Please help answer now ASAP
Answer:
ray DB I think good luck brother
Find all the zeros of each function.
y=3x³-7x²-14 x+24
All the zeros of each function y=3x³-7x²-14 x+24 are
X₁ = -2, X₂≈ 1.33333, X₃ = 3
What is root of Polynomial?Polynomial roots are the answers to any polynomial for which we need to determine the value of the unknowable variable. Knowing the roots will allow us to evaluate the polynomial's value to zero. A polynomial of degree "n" in variable x is an expression with the following formula: anxn + an-1xn-1 +...... + a1x + a0.
The greatest power of a variable in a polynomial is referred to as the polynomial's degree.
A monomial is a polynomial with a single term. A monomial is referred to as a polynomial of zero degrees if it simply has a constant term.
According to the given data,
y=3x³-7x² -14x + 24
Substitute y = 0
0=3x³-7x²- 14x + 24
Move the expression to the left
0-3x³+7x² +14x-24=0
Remove 0
Rewrite
- 3(x³+8) +7x(x+2)=0
Factor the expression
-3(x+2) x(x²-2x + 4) +7x(x+2)=0
Remove the parentheses
-(x+2)x(3x²-6x+12-7x) = 0
Collect like terms
-(x+2)x (3x²-13x+12) 13x+12=0
Rewrite the expression
(x+2)x(3x-4)x(x-3)=0
Separate into possible cases
x+2=0
3x-4=0
X 3=0
Solve the equations
x = -2
X=4/3
X = 3
The equation has 3 solutions
Solution
X₁ = -2 , X₂=4/3 , X₃ = 3
Alternative Form
X₁ = -2, X₂= 1.33333, x₃ = 3
Hence ,all the zeros of each function y=3x³-7x²-14 x+24 are
X₁ = -2, X₂≈ 1.33333, X₃ = 3
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Please solve the perimeter (I know the answer, please explain steps)!!
Step-by-step explanation:
The perimeter of a trapezoid is All the sides combined. We already know two of the sides. You can simplify the square roots to be 2[tex]\sqrt{2}[/tex]+6+x. We know that two sides (or the ones we don't know) are equal, and we see an altitude. This shows that we can make a right triangle be a^2+b^2=c^2. Once we substitute everything, we find [tex]2\sqrt{2}[/tex]^2(or 8)+x^2+c^2. This means that we now need to find x. Also, sorry, but I don't know what to do after this so I hope you can solve it from here. The things you need to find out are c^2 and x.
The temperature dropped 24 degrees in 4 hours. What was the average drop in temp per hour?
Answer:
6
Step-by-step explanation:
You have to divide 24 by four.
Which equation would be used to generate the data in the following table?
Answer:
D. y = 8x
Step-by-step explanation:
[tex]\mathrm{y(out put) = x(in put) \times 8}[/tex]
exercise 8 module 3 Describe the graph of the celsius-fahrenheit relationship
Answer: Exercise 8 module 3 Describe the graph of the Celsius - Fahrenheit relationship is F = 8C + 3 and C = (F-3) / 8
Step-by-step explanation:
Celsius and Fahrenheit are two scales used to measure temperature. The temperature in the centigrade scale will be expressed in degrees Celsius. The temperature in the Fahrenheit scale will be expressed in degrees Fahrenheit. The relation between Celsius and Fahrenheit is proportional. Both have a different freezing point of water and both follow the varied unit difference between each scale.
Celsius to Fahrenheit
The conversion from Celsius to Fahrenheit can be mathematically expressed as-
F = [ (9/5) x C ] + 32
Where,
F is the temperature in Fahrenheit.
C is the temperature on the Centigrade scale.
Fahrenheit to Celsius
The conversion from Fahrenheit to Celsius can be mathematically expressed as-
C = (5/9) [ (F-32) ]
Where,
F is the temperature in Fahrenheit.
C is the temperature on the Centigrade scale.
Units of Celsius and Fahrenheit :
The units of temperature scale are useful in differentiating temperatures from one scale to another.
The temperature on the Celsius scale is denoted by °C
The temperature on the Fahrenheit scale is denoted by °F
Using linear function concepts, the graph of the Celsius-Fahrenheit relationship is linear with an intercept of 3 and slope of 8 module.
A linear function is modeled by:
y = mx + b
where, m is the slope
so, we can write,
F = 8C + 3
we can also express the Celsius in terms of Fahrenheit :
8C = F - 3
C = (F-3) / 8
Therefore,
Exercise 8 module 3 Describe the graph of the Celsius - Fahrenheit relationship is F = 8C + 3 and C = (F-3) / 8.
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A certain refrigerator requires 170 watts of electricity when it is running. It typically runs about 20 minutes per hour. How much does it cost to run this refrigerator for one year if the cost per kWh is $0.11?
If certain refrigerator requires 170 watts of electricity when it is running. It typically runs about 20 minutes per hour. The amount it cost to run this refrigerator for one year if the cost per kWh is $0.11 is: $53.856.
CostGiven:
Electricity watts = 170 watts
Minutes run = 20 minutes
Cost per KWh =$0.11
Hence,
170 watts = 1.7×10^-1
20 min = 1/3 h
Now let calculate the cost of running the refrigerator for one year
1.7×10^-1 × 1/3 × 24 ×360 × $0.11
= $53.856
Therefore If certain refrigerator requires 170 watts of electricity when it is running. It typically runs about 20 minutes per hour. The amount it cost to run this refrigerator for one year if the cost per kWh is $0.11 is: $53.856.
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Which names are correct for EN?
The elevator in a downtown skyscraper goes from the top floor down to the lowest level of the underground parking garage. If the building is 450 feet tall and the elevator descends 530 feet from top to bottom, how far underground does the parking garage go?
A) 970 feet
B) 980 feet
C) 70 feet
D) 80 feet
Answer:
530-450=80
Answer = 80 feet
What is 2+4-52+2+5+7+4?
Answer: The answer is -28.
Step-by-step explanation: 2+4-52+2+5+7+4 = -28
Hope this helped :D
Answer:
The correct answer is -28
you want to make six dozen cookie for a bake sale if you follow the recipe one bach makes 2 dozen cookie let b be the number of batches you need to bake
You need to make 3 batches if you want to get 6 dozen cookies.
How many batches do you need to bake?
Here we know that you need to make a total of 6 dozen cookies, and we know that each batch you make gives 2 dozen.
Then if you make b batches, the number of dozens of cookies that you get is given by the linear equation:
d = 2*b
So, if you want to get 6 dozens, you need to replace d by 6, we will get:
6 = 2*b
Solving that for b, we get:
6/2 =b = 3
You need to make 3 batches if you want to get 6 dozen cookies.
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Alice says because 7 and 17 are both prime numbers, all whole numbers that end in 7 are prime numbers
Alice is wrong. Not all numbers that end with 7 is a prime numbers. an example is 57.
Prime numbers are numbers that are divisible by 1 and themselves alone. Examples are 2, 3, 7,17, and 11. However, 7 and 17 being prime numbers does not make any other number ending with 7 a whole number. E.g 57, a number that ends with 7 but it is not a prime number because it is divisible by 3.
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I keep getting Bs on these and its driving me crazy
The correct answers are:
The range of packages shipped to Rare Vinyl is greater than the range of packages shipped to Rare Vinyl .
The distribution of packages shipped to both businesses are approximately symmetrical.
What is the range and distribution of the plot?
A line plot is a graph that is made up of a number line and check marks. A line plot is a graph that is used to show the frequency of data points in a data set using check marks above a number line. The greater the frequency of the data point, the greater the number of marks above the number on the number line.
Range is used to measure the variation of a data set. It is the difference between the maximum number and the minimum number.
Range = maximum number - minimum number
Range of Rare Vinyl = 13 - 8 = 5
Range of Aquarium World = 6 - 0 = 6
A line plot is symmetrical if the opposite sides of the line plot are identical in shape. It can be seen that opposite sides of both line plots are identical.
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Scores on an exam follow an approximately normal distribution with a mean of 76. 4 and a standard deviation of 6. 1 points. What is the minimum score you would need to be in the top 7%?.
If the scores on an exam follow an approximately normal distribution with a mean of 76.4 and a standard deviation of 6.1 points, then the minimum score needed to be in the top 7% is calculated to be 85.404.
This type of problem can be categorized as a normal distribution problem and can be solved with the help of z-score.
If we consider Z = standard score,
μ = mean
σ = standard deviation
Then the z-score to figure out the lowest score to be in the top 7% is given as,
Z = x - μ / σ
If the p-value is known, the z-score can be found with the help of the standard table.
As the minimum score to be in the top 7% is to be determined, p-value = 0.07
The z-score that corresponds to the p-value of 0.07 is 1.476 in the standard table.
Hence,
1.476 = x - 76.4 ÷ 6.1
1.476 × 6.1 = x - 76.4
1.476 × 6.1 + 76.4 = x
9.004 + 76.4 = x
x = 85.404
Therefore, 85.404 is the minimum score that is needed to be in the top 7%.
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Calculate the derivative of the function. (3x-6)^3 /(2x-2)^3
Applying the quotient rule, the derivative of the function is given by:
[tex]f^{\prime}(x) = \frac{3(3x - 6)^2(3(2x - 2) - 2(3x - 6))}{(2x - 2)^4}[/tex]
What is the derivative of a quotient?Suppose a quotient function defined as follows:
f(x) = g(x)/h(x).
The derivative of the function is defined according to the following rule:
f'(x) = [g'(x)h(x) - h'(x)g(x)]/(h(x))²
For this problem, the function is given by:
f(x) = (3x-6)³ /(2x-2)³.
Hence the parameters are:
g(x) = (3x - 6)³.h(x) = (2x - 2)³.Applying the power rule and the chain rule, the derivatives of the functions are:
g'(x) = 9(3x - 6)².h'(x) = 6(2x - 2)².Hence the derivative of the function is:
[tex]f^{\prime}(x) = \frac{9(3x - 6)^2(2x - 2)^3 - 6(2x - 2)^2(3x - 6)^3}{(2x - 2)^6}[/tex]
[tex]f^{\prime}(x) = \frac{3(3x - 6)^2(2x - 2)^2(3(2x - 2) - 2(3x - 6))}{(2x - 2)^6}[/tex]
[tex]f^{\prime}(x) = \frac{3(3x - 6)^2(3(2x - 2) - 2(3x - 6))}{(2x - 2)^4}[/tex]
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l
Use the graph for Exercises 1-3.
1. Quadrilateral J is reflected across the x-axis.
What is the image of the reflection?
2. Which two quadrilaterals are reflections of each
other across the y-axis?
3. How are quadrilaterals Hand J related?
Draw the image of the figure after each reflection
Answer:
explain why a mission statement should not include monetary amount numbers percentages ratios or objectives
Due tonight ‼️‼️‼️‼️ The following graph shows a proportional relationship.
What is the constant of proportionality between y and x in the graph?
The constant of proportionality between y and x in the graph is 1.
From given graph we can see that
When x=2 then y=2
When x=4 then y=4
When x=6 then y=6
when x=10 then y= 10
It means when x increases then y also increases .
It is in direct proportion.
Direct proportion:y/x=k.
Where k=Proportionality constant
Using the formula
y/x=10/10=2/2=1
Hence, the value of proportionality constant=1
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Give an example of an exponential function that models exponential growth and an example of an exponential function that models exponential decay.
The exponential function that models exponential growth is y = 5(3)ˣ.
The example of an exponential function that models exponential decay is y = 2(0.8)ˣ
What is termed as exponential growth?Exponential growth is the process by which quantity increases over time. It happens whenever the instantaneous rate of change of a volume with respect to time has been proportional to the volume itself.
Bacteria are one of the finest examples of exponential growth. Prokaryotic fission takes bacteria about an hour to reproduce. We would see exponential growth if we placed 100 bacteria in a surroundings and recorded this same population size every hour.Consider exponential function; y = a(b)ˣ.
For the exponential growth a > 0 and b > 0.
Suppose a = 5 and b = 3.
Then, the function will become after substituting the both values.
y = 5(3)ˣ which is the exponential growth of the exponential function.
What is termed as exponential decay?According to the law, exponential decay would be the decrease in a quantity (1) where is the exponential function and the initial value, for a parameter as well as constant (known as the decay constant).
In arithmetic, exponential decay refers to the process of decreasing an amount by a constant percentage rate over time. It can be expressed as y=a(1-b)ˣ, where y is the final amount, an is the initial amount, b is the decay factor, & x is the time elapsed.Now, as per the question.
For the exponential decay a > 0 only.
Consider exponential function; y = a(b)ˣ.
Let, a = 2 and b = 0.8.
Then,
y = 2(0.8)ˣ
Therefore, the exponential function in the form of exponential decay is y = 2(0.8)ˣ.
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Here is a sequence
5,10,20,40,80
a) What is the term-to-term rule for this sequence?
b)The 10th term in the sequence is 2560. What is the 11th term in the sequence?
the term to term rule is that every next term becomes 2 times of the previous term and the 11th term is 5120 for the sequence 5, 10, 20, 40, 80.
We have a sequence:
5, 10, 20, 40, 80
We need to find the term to term rule of the sequence.
We get that:
10 / 5 = 2
20 / 10 = 2
40 / 20 = 2
80 / 20 = 2
Term to term rule is that every next term becomes 2 times of the previous term.
10th term = 2560
11th term = 2 × 2560
11th term = 5120
Therefore, we get that, the term to term rule is that every next term becomes 2 times of the previous term and the 11th term is 5120 for the sequence 5, 10, 20, 40, 80.
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Question 7A: Keisha has $585.43 in her checking account. She must maintain a balance of $300 to avoid a fee. She wrote a check for $302.05 today. Write an inequality, using x for the variable, that would be used for the least amount of money she needs to deposit to avoid a fee.
Question 7B: Using your inequality from question 7A, solve the inequality to find the least amount of money Keisha can deposit to avoid a fee.
The least amount of money she needs to deposit to avoid a fee is; $16.62
How to Solve Inequality Word Problems?We are given;
Amount Keisha has in her checking account = $585.43
Minimum balance to be maintained = $300
Check written = $302.05
Now, if x represents the variable, that would be used for the least amount of money she needs to deposit to avoid a fee, then the inequality is; $585.43 - $302.05 + x ≥ $300
$283.38 + x ≥ $300
Subtract 283.38 from both sides to get;
x ≥ $16.62
Thus, the least amount of money she needs to deposit to avoid a fee is; $16.62
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Which function has a domain of x ≥5 and a range of y≤3?
y=√x-5+3
y=√x+5-3
y=-√x-5+3
y=-√x+5-3
The function has a domain of x ≥5 and a range of y≤3
y = - [tex]\sqrt{x-5}[/tex] +3, this function has a domain of x ≥5 and a range of y≤3Given that
The domain of function is x ≥5, andThe range of function is y≤3.To find
The function that have domain x ≥5 and range y≤3.So, according to the question
We have
Domain of function = x ≥5.Range of function = y≤3.A square root can only be calculated in values equal to or greater than zero, so keep that in mind.
So, if we want the domain to be x > 5, then we must have:
[tex]\sqrt{x-5}[/tex].
Now that we also want the range to be equal to or less than 3, we need a constant term with a value of 3 and a negative coefficient before the square root, which gives us:
y = - [tex]\sqrt{x-5}[/tex] +3
Answer:
y = - [tex]\sqrt{x-5}[/tex] +3 is have a range y≤3 and domain x ≥5.To learn more about domain and range please click on the link:
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Answer:
C.
[tex]y = - \sqrt{x - 5 + 3} [/tex]
If eight bottles of shampoo is $20 how much money is one bottle of shampoo?
Answer:
Step-by-step explanation:
ik u already know this.. im still gonna answer for points.
In order to find how much is 1 bottle of shampoo you just divide the $20 by 8.
Just use a calculator and you will get $2.50
Answer:
The answer will be $2.50
Step-by-step explanation:
All you do is divide 20 by 8 and you will get 2.5 and if you need to check the answer you can multiply 2.5 by 8
Hope this helps and may God bless you<3
What is the value of y in this figure?
Enter your answer in the box.
PLS HURRY ILL GIVE BRAINLIEST!!!!!
Answer:
163 degrees
Step-by-step explanation:
163 degrees is equal to y
Z = x
The measure of angle y is 163° and the measure of angle x and z is 17 degrees.
Given that:
Two lines are intersected with each other.
It is required to find the measure of angles x, y, and z.
The angles formed on the opposite side of the intersecting line are called vertical angles.
Also, by the Vertical Angles Theorem, the vertical angles formed are always equal.
Here, y is vertical to the given measure of 163°.
So, y = 163°.
Now, x and y are the angles formed along a line.
So, they are linear pair of angles.
Linear pair of angles are supplementary.
So, x + y = 180
x = 180 - 163
= 17°
Also, x and z are vertical angles.
So, z = 17°
Hence, x = 17°, y = 163°, and z = 17°.
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For a given calendar year, Mrs. Terry pays the first $2,500 of her medical expenses plus 20% of all medical expenses
over $2,500. In the equation shown, y represents the amount that she pays when x is the total dollar amount of her
medical expenses for the year.
V = 2,500 + 0.2 (x - 2,500)
for x ≥ 2,500
If y = $2,632 for this year, what is x, Mrs. Terry's total medical expenses?
Using proportions, Mrs. Terry total medical expenses are of $2,526.4.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.
For this problem, her expenses are divided as follows:
All of the first $2,500.20% of the remaining 2632 - 2500 = $132.Hence her total medical expenses are given as follows:
2500 + 0.2 x 132 = $2,526.4.
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Answer:
3
Step-by-step explanation:
I can figure this out by counting, I just imagine its a rectangle, count the 6 squares, the cut it in half
Answer:
3
Step-by-step explanation:
Translate it 3 units left, then turn it 180 degrees starting from its right side to its left side. Now, the triangle is mirrored.