Slope intercept form:
y=mx+b
Where:
m= slope
b= y-intercept
For: y=1/2x-2
slope = 1/2
b= -2
To graph it we have to look at the y-intercept.(-2) It means that the line crosses the y axis at y=-2.
looking at the slope, we know that slope = rise (y) / run (x). 1/2
For every 2 units along the x-axis (to the right) the line goes up by 1 unit.
Since inequality has a y> the line is not included in the solution, so it's a dashed line, where the solution is above the line.
- 7x - 5y = 36
x = 2y + 3
Answer:
Solution
\(x = - 3,\: y = -3\)
Step-by-step explanation:
If the objective is to solve for the system of equations
- 7x - 5y = 36 [1]
x = 2y + 3 [2]
Then the process is as follows
Substitute x = 2y + 3 from eq [2] in eq [1] : -7 x- 5y = 36Given 8x^2 – 3 + 4, what is (are) the constant(s)?
Answer:
-3 and 4
Step-by-step explanation:
\(-3\) and \(4\) are the constantssince they aren't multiplied a variable
What’s 2+2=? And what Number am I thinking?
First one to answer correctly gets brainless
Answer:
2+2 is 4.
You‘re thinking of the number 15.
:)
Answer:
22
Step-by-step explanation:
Please use the following to answer the next 4 questions. A soft drink filling machine, when in perfect adjustment, fills the bottles with 12 ounces of soft drink. A random sample of 49 bottles is selected, and the contents are measured. The sample yielded a mean content of 11.88 ounces with a standard deviation of 0.35 ounces.
1.State the null and alternative hypotheses.
a. H0: µ = 0, Ha: µ > 11.88
b. H0: µ = 0, Ha: µ ≠ 11.88
c. H0: µ = 0, Ha: µ > 12
d. H0: µ = 0, Ha: µ ≠ 12
2.Specify the rejection region for = 0.01. Reject H0 if
a. t > 2.68
b. t < -2.68
c. |t| > 2.68
d. z < 2.68
3.Calculate the p-value
a. 0.01
b. 0.02
c. 0.005
d. 0.05
4. What is your conclusion?
a. Reject H0
b. Fail to reject H0
c. Reject Ha
d. Fail to reject Ha
The null and alternative hypotheses can be stated as follows:
c. H0: µ = 12, Ha: µ ≠ 12
The null hypothesis (H0) assumes that the population mean content of the bottles is 12 ounces, indicating perfect adjustment of the filling machine. The alternative hypothesis (Ha) states that the population mean content is not equal to 12 ounces, suggesting that the machine is not in perfect adjustment.
The rejection region for α = 0.01 can be specified as:
c. |t| > 2.68
This means that we would reject the null hypothesis if the absolute value of the calculated t-statistic is greater than 2.68.
To calculate the p-value, we need the t-statistic corresponding to the sample mean and standard deviation. With a sample mean of 11.88 ounces, a standard deviation of 0.35 ounces, and a sample size of 49, we can calculate the t-statistic. The p-value represents the probability of observing a sample mean as extreme as the one obtained, assuming the null hypothesis is true.
The p-value cannot be determined without the t-statistic value or the corresponding degrees of freedom.
Without the p-value, we cannot draw a definitive conclusion. To make a conclusion, we would compare the calculated t-statistic to the critical t-value based on the chosen significance level (α = 0.01). If the calculated t-statistic falls within the rejection region (|t| > 2.68), we would reject the null hypothesis. If the calculated t-statistic falls outside the rejection region, we would fail to reject the null hypothesis.
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drag each label to the correct location on the chart. given: prove: a coordinate system labeled 2, 1, 4, and 3, anticlockwise. complete the flow chart to prove .
1) The Roman military was directed by consuls
2) Senate, a body where plebians chose the leaders.
3) a patrician-only ruling body known as the Assemblies.
What is Roman Republic?The highest ranked magistrate in the Roman Republic was known as a consul (consul in Latin). Two consuls, who were responsible for overseeing the state and, in particular, the army in the field, were chosen annually from among citizens over the age of forty-two for the office, which was annual and collegiate. The consuls, however, held relatively little power and influence during the foundation of the Empire because the emperor assumed the role of supreme leader, serving solely as a symbol of Republican Rome's past.
The Senate, also known as Senatus, de senex, elder, was one of the components of Ancient Rome's government. It was made up of 300 members drawn from the ancient magistrates during the most of the Republic, yet following Sila's dictatorship and during the imperial era, that number rose to 900. It was responsible for approving the laws chosen by the electorate, giving magistrates advice, and managing foreign policy, finances, and religion.
The complete question is :
Insert a picture below
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A cyclist rides his bike at a rate of 30 kilometers per hour. What is this rate in miles per hour? How many miles will the cyclist travel in 3 hours? In your computations, assume that 1 mile is equal to 1.6 kilometers. Do not round your answers.
Answer:4.8
Step-by-step explanation:
30/3 x 1.6
Please help!! Over several years, Stephon gathered data about his age and the time it took him to run two laps on the school track. The scatter plot shows the data he gathered and the line of best fit. The equation of the line of best fit is y = -2.1x + 565.6. Based on the line of best fit, approximately how long will it take Stephon to run two laps on the track when he is 192 months old?
Answer:
It will take Stephon about A: 163 seconds to run two laps when he is 192 months old.
Step-by-step explanation:
To find 163 seconds all I did was eyeball where 192 months is going to be on the x-axis and lined it up with the provided line of fit, then I ran it across the x-axis to the y-axis and I got around 163 seconds.
Given line of best fit is y = -2.1x + 565.6, where x is age in months and y is time in seconds, it take Stephon 162.4 seconds to run two laps on the track when he is 192 months old
A line of best fit is a straight line that minimizes the distance between it and some data. The line of best fit is used to express a relationship in a scatter plot of different data points.
Given in the question,
x = age in months
y = time in seconds
Here, age of child is independent and time taken to run two laps is dependent variable.
given line of best fit : y = -2.1x + 565.6
given y = 192 months
finding the value of y :
y = -2.1x + 565.6 = -2.1 * 192 + 565.6 = 162.4
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Someone please answer will mark brainliest thank you so much
Answer:
Since √1 = 1 and
√4 = 2 it is known that
√2 is between 1 and 2
Add. (5x - 2y + 7) + (3x + y - 8)
Answer:
\(=8x-y-1\)
Step-by-step explanation:
So we have the expression:
\((5x-2y+7)+(3x+y-8)\)
Combine like terms:
\(=(5x+3x)+(-2y+y)+(7-8)\)
Add:
\(=8x-y-1\)
And we're done!
Answer:
8x-y-1
Step-by-step explanation:
First remove the parentheses
5x-2y+7+3x+y-8
Add 5x and 3x
8x-2y+7+y-8
add -2y and y
8x-y+7-8
Subtract 8 from 7
8x-y-1
Graphs of a function and its inverse are shown on the same coordinate grid.
Which statements accurately compare the function and its inverse? Check all that apply.
The domains of the two functions extend to positive infinity.
The ranges of the two functions are all real numbers.
The x-intercept of f(x) and the y-intercept of f–1(x) are reciprocals of each other.
The point of intersection of the two functions indicates that the functions are inverses.
Neither function has a minimum.
The correct statements are;
The x-intercept of f(x) and the y-intercept of f–1(x) are reciprocals of each other.
The point of intersection of the two functions indicates that the functions are inverses.
Option C and D
How to determine the correct statementsTo accurately compare a function and its inverse based on the graphs, we have to know the following;
The domains of the two functions extend to positive infinity if the domain of the inverse function is equivalent to the range of the original function.The ranges of the two functions are all real numbers if the graphs cover the entire y-axis without any gaps or discontinuities.If the graphs intersect at the point (a, b), it means that f(a) = b and f^(-1)(b) = a, indicating that the functions are inverses of each other.
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what do you mean by quadratic polynomials ?
Step-by-step explanation:
it us a polynomial with a second degree variable
What is the range of the following relation?
Answer:
Y less than or equal to zero
Step-by-step explanation:
The graph shows that its moving downwards, therefore the Y value is decreasing..
I REALLY NEED HELP WITH THESE PROBLEMS I WILL AWARD BRAINLIEST
..................................................................................................................................................................................................................................................................................................................................................................
The mean is? round to one decimal place as needed
Answer:
Mean = 6.2
Explanation:
The times recorded during the experiment are:
\(undefined\)7.2, 6.3, 6.9, 4.1, 6.3, 6.4
To find the mean time, add the times together and divide by 6.
\(\begin{gathered} Mean=\frac{Sum}{Number\text{ of items}} \\ =\frac{7.2+6.3+6.9+4.1+6.3+6.4}{6} \\ =\frac{37.2}{6} \\ =6.2 \end{gathered}\)The mean is 6.2 seconds.
Is 8/10 greater or lesser than 3/8
Answer:
Greater.
Step-by-step explanation:
Hope this helps!
Answer:
greater than
Step-by-step explanation:
2 3/5 +1/20+2/4 plz help me
Answer:
3 3/20 or 63/20
Step-by-step explanation:
How to find period with two midline’s picture is below
first off, next time make sure your screenshot is sharp enough and clear enough.
so if we notice the two points on the midline that you took, the horizontal distance will be from -4.5 to 3.6 which gives us a distance over the x-axis of 8.1 units, now half of that will be to the "orange" area, half of 8.1 is 4.05. Now, the ending of the "orange" part is not really clear, but that'd be the period, because that is the part that's repeating.
How long is it?
well, our 4.05 half ends after the "2", so without a better calibration of the picture, hmmm 2.20 or thereabouts, let's make an assumption the "orange" section ends at 16, so that'd be 4.05 + (16 - 2) ≈ 18.05.
which statement below correctly describes the diagram
9514 1404 393
Answer:
(a) the diagram is incorrect
Step-by-step explanation:
There is no overlap between the sets of rational and irrational numbers. The diagram is incorrect.
How is the sum expressed in sigma notation?
13 + 21 + 29 + 37 + 45
\(13~~ + ~~\stackrel{ 13+8 }{21~}~ + ~~\stackrel{ 21+8 }{29}~~ + ~~\stackrel{ 29+8 }{37}~~ + ~~\stackrel{ 37+8 }{45} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill {\Large \begin{array}{llll} \displaystyle\sum_{i=0}^{4}~13+8i \end{array}}~\hfill\)
The following circle graph shows the number of shoesthat were sold for each brand at the local shoe store.63Nike• Adidas• ConverseUnder Armour902745What percent of the shoes sold were Nike or UnderArmour?
From the given circle graph, we can see that there are 90+45+27+63=225 shoes. Then, the percentage of Nike is given by
\(\frac{90}{225}\times100=40\text{ \%}\)and the percentage of Under Armour is
\(\frac{63}{225}\times100=28\text{ \%}\)Then, the percent of the shoes that were Nike or Under Armour is
\(40\text{ \% + 28 \% = 68 \%}\)that is 68 percent
y = f(x) = 5x
find f(x) when x = 3
The value of f(x) when x is 3 is 15
What is function?A Function in mathematics is an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
For example, if f(x) = x² +2x +5 , the value of f(x) when x is 2 is calculated as;
f(x) = 2² + 2(2) + 5
f(x) = 4 +4+5
= 13
This done by substituting the given value of x into the expression.
Similarly , if f(x) = 5x, the value of f(x) when x is 3 is calculated as;
f(x) = 5(3)
f(x) = 15
therefore the value of f(x) when x is 3 is 15
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kelsey is skiing along a circular ski trail that has a radius of 2.9 km. she starts at the 3-o'clock position and travels in the ccw direction. kelsey stops skiing when she is 1.185 km to the right and 2.647 km above the center of the ski trail. imagine an angle with its vertex at the center of the circular ski trail that subtends kelsey's path.
a) How many radians has the angle swept out since kelsey started skiing?
b) How many km has kelsey skied since she started skiing?
a) The angle swept out since kelsey started skiing: 1.1498 radians
b) The distance Kelsey skied: 3.334 km
In this question, we have been given Kelsey is skiing along a circular ski trail that has a radius of 2.9 km. she starts at the 3-o'clock position and travels in the ccw direction. kelsey stops skiing when she is 1.185 km to the right and 2.647 km above the center of the ski trail.
Consider the following figure for reference.
We need to find the angle θ and the distance kelsey skied (i.e., the arc length)
Here, the horizontal distance x = 1.185 km and the vertical distance y = 2.647 km
a. the tangent of angle θ would be,
tan(θ) = y/x
tan(θ) = 2.647/1.185
tan(θ) = 2.2337
θ = arctan(2.2337)
θ = 65.88°
θ = 1.1498 radians
b. The length of the arc is:
s = rθ
s = 2.9 * 1.1498
s = 3.334 km
Therefore, a) the angle swept out : 1.1498 radians
b) the distance Kelsey skied: 3.334 km
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HELP ASAP PLS
A student needs to decorate a box as part of a project for her history class. A model of the box is shown.
A rectangular prism with dimensions of 24 inches by 16 inches by 2 inches.
What is the surface area of the box?
928 in2
768 in2
464 in2
160 in2
Answer:
928 in2
768 in2
464 in2
160 in2
Help Please!!!
That partitions the segments into a ratio of 3 to 2
let's say the segment with A(-5 , -8) and B(10 , 7) gets partitioned by point C
\(\textit{internal division of a line segment using ratios} \\\\\\ A(-5,-8)\qquad B(10,7)\qquad \qquad \stackrel{\textit{ratio from A to B}}{3:2} \\\\\\ \cfrac{A\underline{C}}{\underline{C} B} = \cfrac{3}{2}\implies \cfrac{A}{B} = \cfrac{3}{2}\implies 2A=3B\implies 2(-5,-8)=3(10,7)\)
\((\stackrel{x}{-10}~~,~~ \stackrel{y}{-16})=(\stackrel{x}{30}~~,~~ \stackrel{y}{21}) \implies C=\underset{\textit{sum of the ratios}}{\left( \cfrac{\stackrel{\textit{sum of x's}}{-10 +30}}{3+2}~~,~~\cfrac{\stackrel{\textit{sum of y's}}{-16 +21}}{3+2} \right)} \\\\\\ C=\left( \cfrac{ 20 }{ 5 }~~,~~\cfrac{ 5}{ 5 } \right)\implies C=(4~~,~~1)\)
Answer:
( 4, 1 )
Step-by-step explanation:
The radius of a circle is 4 miles. What is the length of a 45° arc?
45°
r=4 mi
The length of a 45° arc with a radius of 4 miles is approximately 3.14 miles, calculated using the formula for arc length.
To determine the length of a 45° arc given a radius of 4 miles, we can use the formula: Arc length = (angle measure / 360°) x 2πr, where r is the radius of the circle and π is a constant equal to approximately 3.14.
Substituting the given values into the formula, we get: Arc length = (45° / 360°) x 2π(4 mi)Arc length = (1/8) x 2π(4 mi)Arc length = (1/8) x 8π Arc length = π
The length of the 45° arc is approximately 3.14 miles.
Summary: To find the length of a 45° arc of a circle, we use the formula: Arc length = (angle measure / 360°) x 2πr. Given a radius of 4 miles, we can substitute the values into the formula to get the length of the 45° arc, which is approximately 3.14 miles.
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Data representing the price and quantity demanded for hand-held electronic organizers were analyzed every day for 15 days. The logarithmic function of best fit to the data was found to be y= 398-73 lnx. Use this to predict the number of hand-held electronic organizers that would be demanded if the price were $275. Round to the nearest whole number.
a. 6 electronic organizers
b. 5 electronic organizers
c. 4 electronic organizers
d. 7 electronic organizers
Answer:
\(x=5\)
Step-by-step explanation:
From the question we are told that
The logarithmic function \(y= 398-73 lnx\)
Price p= $275
Generally we solve mathematically for the equation \(y= 398-73 lnx\)
\(y= 398-73 lnx\)
\(275= 398-73 lnx\)
\(73 lnx=123\)
\(lnx=\frac{123}{73}\)
Therefore
\(x=e^(^\frac{123}{73}^)\)
\(x=5.4\)
Nearest whole number
\(x=5\)
The number of required hand-held electric organizers would be 5, option b. Understand the step-by-step calculations below.
Logarithm:The logarithm is an exponent or power to which a base must be raised to obtain a given number.
Mathematically, logarithms are expressed as, m is the logarithm of n to the base b if \(bm = n\), which can also be written as \(m = log_nb\).
Given function is,
\(y=398-73 lnx\)
Also, the cost is $275 then from the given equation,
\(398-73 lnx=275\)
Now, solving the above equation we get,
\(398-73 lnx=275\\73ln=398-275\\lnx=\frac{123}{73}\)
Now, shifting the algorithm into another side we get the exponential equation as,
\(\\x=e^{\frac{123}{73} }\\x=5.39\\x\approx5\)
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She was surprisingly strong for a girl of such petite stature. Her fiery her usually matched her determination, but not today. For the first time
since meeting Mr. Black, she was afraid.
This is an example of direct or indirect characterization?
Answer:
Direct - telling us she's strong, petite, fiery, afraid
Step-by-step explanation:
3 1/8 divided by (x - 4 7/28) = 17/18 + 1 5/6
(Key on how to write the mixed numbers: Three is a whole number and then the fraction is 1/8, 4 is the whole number and 7/28 is the fraction, 1 is the whole number and 5/6 is the fraction)
Please provide the work and the answer! :)
x = 301/56
Algebraic expressionsAlgebra is the branch of mathematics that deals with numbers and values which are represented with letters and symbols.
Sometimes, we do not want to mention a particular number, we can represent the number by a letter or a suitable symbol. This approach is algebraic.
For example, d + d = 2d
This is an example of an algebraic expression
Given the algebraic expression,
\(3\frac{1}{8} \div (x - 4 \frac{7}{28} ) = \frac{17}{18} + 1 \frac{5}{6} \)
Step 1:
Simplify the expression by converting the mixed numbers into improper fractions:
25/8 ÷ ( x - 119/28) = 17/18 + 11/6
Step 2: Simplify the right side of the equation
25/8 ÷( x - 119/28) = 17/18 + 33/18
25/8 ÷( x - 119/28) = 50/18
Step 3: Multiply both sides of the equation by (x - 119/28)
25/8 = 50/18 × (x - 119/28)
Step 4: Multiply both sides of the equation by (18/50)
25/8 × (18/50) = (x - 119/28)
Step 5: Simplify the left side of the equation
9/8 = (x - 119/28)
Step 6: Add 119/28 to both sides of the equation
9/8 + 119/28 = x
Step 7: Calculate the value of x:
x = 9/8 + 119/28
= 63/56 + 238/56
= 301/56
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One root of f (x) = x cubed + 10 x squared minus 25 x minus 250 is x = –10. What are all the roots of the function? Use the Remainder Theorem.
x = –25 or x = 10
x = –25, x = 1, or x = 10
x = –10 or x = 5
x = –10, x = –5, or x = 5
All the roots of the function will be -5, 5, and -10. Then the correct option is D.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
The function is given below.
f(x) = x³ + 10x² - 25x - 250
Factorize the equation, then we have
f(x) = x³ + 10x² - 25x - 250
f(x) = x²(x + 10) - 25(x + 10)
f(x) = (x² - 5²)(x + 10)
f(x) = (x + 5)(x - 5)(x + 10)
Then the roots of the function are given as,
f(x) = 0
(x + 5)(x - 5)(x + 10) = 0
x = -5, -10, 5
All the roots of the function will be -5, 5, and -10. Then the correct option is D.
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HI PLEASE HELP ON QUESTION ASAP USING AVERAGE (MEAN) TO ANSWER QUESTION! IF UR ANSWER AND EXPLAINATION IS CORRECT ILL RATE YOU FIVE STARS, A THANKS AND MAYBE EVEN BRAINLIEST. PLEASE MAKE SURE YOU ANSWER MY QUESTION USING AVERAGES.
1) a meal for 6 cost £12 per person. as it is one of the diners birthday , the other 5 decided to pay for his meal. how much do each of the five friends need to pay?
Each of the five friends needs to pay £14.40 to cover the cost of the birthday person's meal.
To calculate how much each of the five friends needs to pay, we can use the concept of averages or mean.
The total cost of the meal for 6 people is £12 per person. This means that the total cost of the meal is 6 * £12 = £72.
Since the other five friends have decided to pay for the birthday person's meal, they will evenly divide the total cost of £72 among themselves.
To find the average amount each friend needs to pay, we divide the total cost by the number of friends paying, which is 5:
£72 / 5 = £14.40
Using the concept of averaging or finding the mean allows us to distribute the cost equally among the friends, ensuring fairness in sharing the expenses.
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