Answer:
To represent the area of a stained-glass mosaic that sits under a parabolic arch, we can use the equation for a parabolic arch, which is of the form
y = a(x - h)^2 + k
where (h,k) is the vertex of the parabola. The width of the parabolic arch at the base is 8 feet, so the vertex of the parabola is located at (4,0). Therefore, the equation for the parabolic arch is
y = a(x - 4)^2
The height of the parabolic arch is 10 feet, so we can represent the area of the stained-glass mosaic as the region where y is between 0 and 10. This can be expressed as the inequality
0 ≤ a(x - 4)^2 ≤ 10
Solving this inequality for x gives us the solution
-2 ≤ x - 4 ≤ 2
which simplifies to
2 ≤ x ≤ 6
Therefore, the quadratic inequality that represents the area of the stained-glass mosaic is
2 ≤ x ≤ 6
Step-by-step explanation:
Answer:
y ≤- 5/8(x - 4)² + 10 andy ≥ 0-------------------------------------------------------
According to given details we have:
The vertex at (8/2, 10) = (4, 10),The parabola opens down,It passes through the origin.The equation for the parabola is y = a(x - h)² + k, where (h, k) is vertex.
Substitute h = 4, k = 10:
y = a(x - 4)² + 10We know y = 0 at x = 0, substitute to find the value of a:
0 = a(0 - 4)² + 100 = a(16) + 1016a = - 10a = - 10/16 = - 5/8So the parabola is:
y = - 5/8(x - 4)² + 10We are looking for the area between the parabola and the x-axis, therefore we need two inequalities:
y ≤- 5/8(x - 4)² + 10 andy ≥ 0See attached for reference.
How do you solve 14p−8=22+20p ?
The value of p is -5
Simply use cross multiplication :
The process of multiplying numbers in the shape of a fraction is called cross multiplication. Cross multiplying, also known as cross multiplication, is the process of multiplying the numerator of one fraction by the denominator of the other fraction on the other side of an equal symbol. Cross multiplication is a method for comparing fractions.
Both fractions with like and unlike parts are multiplied across. When employing the cross-multiplication procedure, we multiply the denominators as well as the numerators when a fraction is dissimilar, or when the denominators of two fractions are not alike.
[tex]14p-8=22+20p\\or, 14p-20p=22+8\\or, -6p=30\\or, p=-\frac{30}{6} \\or, p= -5[/tex]
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Fred made a $1,500 down payment on a 36-month lease contract. His monthly payments were $290.50. At the end of the lease he was charged $0.18 per mile for 1,200 excess miles driven. What was Fred's total cost of leasing? PLEASE SHOW WORK
james rode his bike 7 yards in 3 seconds. set up the table with the information you know. yards seconds 7 3 you got it! what is the missing value? solve on paper if you need to. yards seconds 7 3 120
The missing value after solving is 280 seconds .
Given :
james rode his bike 7 yards in 3 seconds. set up the table with the information you know. yards seconds 7 3 you got it!
Seconds :
The second ( s or sec ) is the International System of Units ( SI ) unit of time measurement.
Table :
yards seconds
7 3
120 x
we need to find x :
1 yard = 7/3 seconds
120 yards = 7 / 3 * 120 seconds
= 7 / 1 * 40 seconds
= 7 * 40 seconds
= 280 seconds.
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an engineering research center claims that through the use of a new computer control system, automo- biles should achieve, on average, an additional 3 miles per gallon of gas. a random sample of 100 automo- biles was used to evaluate this product. the sample mean increase in miles per gallon achieved was 2.4, and the sample standard deviation was 1.8 miles per gallon. test the hypothesis that the population mean is at least 3 miles per gallon. find the p-value of this test, and interpret your findings.
The test is proved that hypothesis that the population mean is atleast 3-miles per gallon.
What is hypothesis?A hypothesis is the proposed explanation for any kind of phenomenon.
So here are the values of X BAR i=2.4. S is 1.8.
Our sample n =100.
The null hypothesis here is that mu is greater than or equal to 3.
Against the alternative hypothesis that is less than three. Now the calculated value for the test statistic is going to be the equal to X bar is in (-) knots. That's 2.4 -3. divided by S over 2^2 of end. So 1.8 divided by the square root of the 100 gives us negative 3.33. So we can refer to that box of the T distribution and we are get the value. The p value for the test is going to be less than 0.5. Therefore we have the strong evidence that the not hypothesis is going to be the read checked it. So therefore we can reject to the null hypothesis and then it can accept the alternative by the hypothesis that is less than three. Where it is here is the mean of the population, the noting the average increase per gallon.
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I NEED HELP ASAP!!
Alex rides his bike to visit two
friends and returned home. Interpret the graph to answer questions about his activities.
1. How long did it take Alec to get to his friends house?
2. How long did he stay at his first friends house?
3. How long did it take alec ti ride his bike from his first friends house to his second friends house?
4. How much longer did alec stay at his first friends house than at his second friends house?
5. In which parts of the graph is alec riding his bike toward his home?
6. In which parts of the graph is alec traveling the fastest?
7. How long was alec away from his house?
Answer:
1 hour
Step-by-step explanation:
Answer: 1hour
Step-by-step explanation: lol
(b) Work out the value of 52 + 23
To find the sum of 52 + 23 is the value is worked to be 75
What is addition in math ?Combining things and counting them as one big group is done through addition.
In math, addition is the process of adding two or more integers together.
Addends are the numbers that are added, and the outcome of the operation, or the final response, is referred to as the sum.
How to find the value of 52 + 23In this problem the addends include
52 and23The applying the addition operation
= 52 + 23
= 45
The sum is solved to be 75
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what is the minimum sample size required to estimate a population mean with a confidence of 95%, if the margin of error is 2 units and a standard deviation of 10 units? show formula and your calculations. round to the next whole number.
The minimum sample size required to estimate a population mean with a confidence of 95%, a margin error of 2 units and a standard deviation of 10 units is 96.
A minimum sample size is the number of participants one needs to maintain their target confidence interval (margin of error) and confidence level while obtaining results that accurately represent the population they are studying.
The formula to calculate the minimum sample size for the population mean is [tex]\bold{n=\left(\frac{z\times \sigma}{E}\right)^2}[/tex]. Here, n is the sample size, z is the confidence level, σ is the standard deviation, and E is the margin error.
Given, the z-value for 95% confidence is 1.96, E is 2 and σ is 10.
Then, the minimum sample size is,
[tex]\begin{aligned}n&=\left(\frac{1.96\times10}{2}\right)^2\\&=(9.8)^2\\&=96.04\\&\approx96\end{aligned}[/tex]
The answer is 96.
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Meghan is a graphic designer and is trying to make a logo for the Victory Vegetables company.
First, she draws an obtuse triangle with her graphing program. Then, she duplicates the triangle, pastes a copy back in, and flips it over, as shown in the diagram.
What is the value of x?
x = ___
The value of the angle x in the triangle is; x = 70°
What is the value of the angle at a point?Looking at the given image, it is clear that both triangles are similar triangles. This is because we see that after the duplicate, 2 sides apiece are equal.
Thus, the third angle bordering the center of the triangle with one angle as 15° is;
y = 180 - (15 + 20)
Since sum of angles in a triangle equals 180 degrees.
y = 180 - 35
y = 145°
Similarly,
z = 180 - (20 + 15)
z = 180 - 35
z = 145°
Now, sum of angles at a point is 360 degrees. Thus;
x = 360 - (145 - 145)
x = 70°
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Multiple choice! 15 points! Casey used the diagram to prove DEH = FEG. In the diagram, DG intersects HF at point E
1. Linear pair theorem
2. Substitution property of equality
3. Subtraction property of equality
4. Definition of congruence
The given results can be proved by the linear pair property of angles on a straight lines.
What is the linear pair property?The linear pair property can be defined as the sum of all the angles on the one side of a straight line is equal to 180°.
In the given diagram the following data is given,
The angles ∠DEH and ∠DEF are on the straight line HEF.
And, the angles ∠DEF and ∠FEG are on the straight line DEG.
As per the linear property of angles, it can be written as,
m∠DEH + m∠DEF = 180°.
And, m∠DEF + m∠FEG = 180°.
Which implies that m∠DEH + m∠DEF = m∠DEF + m∠FEG
Subtract the common terms from both sides to get,
m∠DEH + m∠DEF - m∠DEF = m∠DEF + m∠FEG - m∠DEF
⇒ m∠DEH = m∠FEG
⇒ ∠DEH ≅ ∠FEG
This is also known as the property of vertically opposite angles.
Hence, the given result m∠DEH = m∠FEG is proved by the linear pair property.
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- 3/8 - 1/4 evaluate
The final solution of the given question is -0.625.
What are the denominator and numerator?
A fraction's top digit is always referred to as the numerator. It displays the number of our parts. A fraction's numerator—the lowest digit—is referred to as the denominator. It displays the overall number of pieces that something can be broken down into.
We have,
- 3/8 - 1/4
so, calculating the given values,
((-3) ÷ (8)) - (1 ÷ 4)
make the denominator the same by multiplying 1/4 by 2, we get,
((-3) ÷ (8)) - (2 ÷ 8)
add the numerator and one common denominator,
-3 - 2 ÷ 8
-5 ÷ 8
= -0.625
Hence, the final solution to the given question is -0.625.
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Which of the following is not a method to solve a quadratic equation?
A. Prime factorisation method
B. Using quadratic formula
C. Completing the square method
D. Factorisation method
Answer:
A. Prime factorisation method
Step-by-step explanation:
❌The answer is not A because:
the prime factorisation method is used to write a number or a polynomial in terms of its factors that are prime numbersYou don't need to write a quadratic equation in terms of its prime factors to solve the quadratic equation.
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Michael finished â…" of a bag of candy in 3 days. at this rate, how long will it take him to eat the entire bag of candy?
Answer:
3 days.
Step-by-step explanation:
The first sentence states that Michael ate a whole bag in 3 days. That's how long it will rtake him to eat a bag of candy, assuming it is the same size and tastiness as the first.
A vacant lot is assessed at $36,000. What property tax must be paid on the lot if the tax rate is 2.4 cents per $1? PLEASE SHOW WORK
Answer:
The property tax that must be paid on the lot is $864.
Step-by-step explanation:
The assessment value of the lot is $36,000, and the tax rate is 2.4 cents per $1, or 0.024. So the total amount of tax due is calculated as follows:
$36,000 * 0.024 = $<<36000*0.024=864>>864
Solve for X - 18 points.
Answer:
x = 1 1/2
Step-by-step explanation:
1/3 x + 1/4 = 3/4
Solving for x
Subtract 1/4 from each side
1/3 x + 1/4 -1/4 = 3/4-1/4
1/3 x = 2/4
Simplify
1/3x = 1/2
Multiply each side by 3
1/3 x * 3 = 1/2 * 3
x = 3/2
Changing to a mixed number
x = 1 1/2
Answer:
[tex]\sf \frac{3}{2} = 1 \frac{1}{2} \\ [/tex]
Step-by-step explanation:
[tex] \sf \frac{1x}{3} + \frac{1}{4} = \frac{3}{4} \\ [/tex]
To solve easily, multiply the whole equation by it's LCM ( LCM of 3 & 4 is 12 ).
[tex] \sf12 \times ( \sf \frac{1x}{3} + \frac{1}{4} = \frac{3}{4} ) \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \ \\ \\ \sf \frac{1x}{3} \times 12 + \frac{1}{4} \times 12= \frac{3}{4} \times 12\\ \\ \sf \sf \frac{12x}{3} + \frac{12}{4} = \frac{36}{4} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \sf4x + 3 = 9 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
And now solve for x.
First, subtract 3 from both sides.
[tex] \sf4x = 9 - 3 \\ \sf4x = 6[/tex]
Divide both sides by 4.
[tex] \sf \: x = \frac{6}{4} \\ [/tex]
To write the fraction in its simplest form, divide both the numerator and denominator by 2.
[tex] \sf \frac{3}{2} = 1 \frac{1}{2} \\ [/tex]
16 donuts in 4 boxes =
donuts in 2 boxes
Answer:
8
Step-by-step explanation:
First, divide 16 by 4 to see how many donuts are in each box. This equation gives us 4. Then, multiply 4 by 2 to see get the answer of 8.
Answer: well if there are 16 donuts in 4 boxes that means there are 4 donuts in each box
Step-by-step explanation:
4=4
4+4=8
4+4+4=12
4+4+4+4=16
so your answer is 8
If P is true, Q is false, R is true, and S is false, determine the truth value of the following.
~[P v (Q v R)] >~ (SVP)
O a. True
O b. False
The truth value of the ~[P v (Q v R)] >~ (S v P) is true.
Truth-value, in logic, is the degree to which a particular proposition or assertion is true (T or 1) or false (F or 0). Because the truth-value of a compound proposition is a function of, or a quantity depending upon, the truth-values of its component components, logical connectives like disjunction and negation can be conceived of as truth-functions.
Given, ~[P v (Q v R)] >~ (S v P) since P v (Q v R) is true, thus ~ [ P v ( Q v R ) ] is false, therefore the implication is true.
⇒~[T v (F v T)] >~ (F v T)
⇒[F v (F v T)]>(T v T)
⇒[F v (F v T)]>(T v T)
⇒F v T
⇒T
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Reflect the traingle ABC Whose vestices areA(3,1), B(-2,5) & C(5,2) in x-axis on the graphpaper. Shade the reflected image & Write theCo-ordinates.
Answer:
A' (3,-1)
B' (-2,-5)
C' (5, -2)
Step-by-step explanation:
Notice how the x values stay the same and the y values become the opposite of the original points.
what is the area of florida rounded to the nearest tenth?
what is the area of south carolina rounded to the nearest ten?
what is the area of georgia rounded to the nearest square mile?
ur not the smartest person
65,760,000
Find the solution to the system of equations.
y=3x-4
y=-2x+6
Answer:
Step-by-step explanation:
There a few ways to solve this system. Since each equation is set equal to y on the left side, that means that we can set the right side of each equation to be equal to each other. So,
3x - 4 = -2x + 6
This can now be solved for x:
5x - 4 = 6 (added 2x to each side)
5x = 10 (added 4 to each side)
x = 2 (divided each side by 5)
Now that we know what x must be, we can plug 5 in for x in either of the equations and solve for y:
y = 3(5) - 4
y = 6 -4
y=2
This means y should be 2. To make sure this answer is correct, we can plug our y and x numbers into the OTHER equation to see if it makes sense:
(2) = -2(2) + 6
2 = -4 + 6
2=2
That looks right, so x = 2 and y = 2
She makes $3,200 as a base salary each month. She gets 8.5% of everything she sells. If she sold $60,000 worth of items this month, what are her earnings for the month, including commission?
Her total salary for the month would be $8300.
What is a expression? What is a mathematical equation? What do you mean by domain and range of a function?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.For any function y = f(x), Domain is the set of all possible values of [y] that exists for different values of [x]. Range is the set of all values of [x] for which [y] exists.We have a women with $3,200 as a base salary each month. She gets 8.5% of everything she sells. If she sold $60,000 worth of items this month.
Assume her total salary to be y = $(3200 + x). Then, we can write -
y = $(3200 + {8.5/100} x 60000}
y = $(3200 + 5100)
y = $8300
Therefore, her total salary for the month would be $8300.
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What are 3 pairs of fractions that have a sum of 5/6. please help
Three pairs of fractions that have a sum of 5/6 are;
1/3 + 2/3 = 5/6
1/4 + 3/4 = 5/6
2/6 + 3/6 = 5/6
How to calculate this?1/3 + 2/3 = 5/6: The fractions have a common bottom number of 3 because they both have the same bottom number.
Adding the top numbers: 1 plus 2 equals 3.
The total is three divided by three, which can also be written as one.
However, we need to show the total with a bottom number of 6 to match the original part. So, we make the top and bottom numbers twice as big to get 2/6. Hence , 1/3 + 2/3 = 2/6.
1/4 + 3/4 = 5/6:The fractions have the same bottom number, so their common denominator is 4.
When you add 1 and 3 together, you get 4.
The sum is four over four, and when simplified, it equals one.
Once again, we have to find a way to write the sum with a bottom number of 6 so that it is the same as the first number in the fraction. So, we take the top number and the bottom number and multiply them both by 3 to get the fraction 3/6. Hence, 1/4 + 3/4 = 3/6.
2/6 + 3/6 = 5/6:In this situation, the fractions already have the same bottom number which is 6.
Adding the top numbers together: 2 + 3 = 5.
The answer is 5/6, which is what we wanted to get.
Therefore each pair shows a different way to add numbers together, either by finding a number that both denominators can divide evenly into or by using numbers that already work well together.
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Five More Than One Third Of A Number Is Negative 2 What Is The Number?
Answer:
n = -21
Step-by-step explanation:
Five More Than One Third Of A Number Is Negative 2 What Is The Number?
1/3n + 5 = -2
subtract 5 from both sides:
1/3n + 5 - 5 = -2 - 5
1/3n = -7
multiply both sides by 3:
3(1/3n) = 3(-7)
n = -21
Two planes are flying at altitude of 15,000 feet. The angle of depression from one plane to the airport is 70°, the angle of depression from one plane to the airport is 60°. Which plane is closer to the airport and by how much?
The plane with an angle of depression of 70° is closer to the airport.
The distance between the plane and the airport is 15957 feet.
What are trigonometric identities?There are three commonly used trigonometric identities.
Sin x = 1/ cosec x
Cos x = 1/ sec x
Tan x = 1/ cot x or sin x / cos x
Cot x = cos x / sin x
We have,
Two planes are flying at an altitude of 15,000 feet.
The angle of depression from one plane to the airport is 70°.
This means,
The distance of the plane from the airport.
Sin 70 = 15,000 / Distance
Distance = 15,000/ sin 70 = 15,000 / 0.94 = 15957 feet _____(1)
The angle of depression from one plane to the airport is 60°.
The distance of the plane from the airport.
Sin 60 = 15,000 / Distance
Distance = 15,000/ sin 60 = 15,000 / 0.87 = 17241 feet _____(2)
Thus,
The plane with an angle of depression of 70° is closer to the airport.
The distance between the plane and the airport is 15957 feet.
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solve for X
A= 75 B= 2+11x C=70
Using the given angles, the value of x in the triangle is x = 3
Calculating angles in a triangleFrom the question, we are to determine the value of x
Given that the measures are the angles of a triangle ABC.
Then, we can write that
A + B + C = 180° (Sum of angles in a triangle)
From the given information,
A = 75
B = 2 + 11x
C = 70
Thus,
75 + 2 + 11x + 70 = 180
147 + 11x = 180
11x = 180 - 147
11x = 33
Divide both sides by 11
11x/11 = 33/11
x = 3
Hence, the value of x is 3
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Figure c is similar by
In the figure of triangles given figure C is not similar
Not similar
What are similar triangles?This is a term used in geometry to mean that the respective sides of the triangles are proportional and the corresponding angles of the triangles are congruent
Hence assuming the corresponding angles of the triangle are congruent then the side should be in proportions
In figure C no information is given about the angles hence they are not similar.
Figure B is similar by Side - Side - Side (SSS) and shows a proportion of 2
Figure D is similar by Side - Angle - Side (SAS), the include angle here are equal by vertical angle theorem
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Why is standard deviation not a measure of central tendency ?
A standard deviation (or σ) is a tool to measure how dispersed the data is in relation to the mean. While, in statistics, a central tendency is a central or typical value for a probability distribution. Some of the most common measures of central tendency consist of the arithmetic mean, the median, and the mode. Deviation means a change or a distance. But change is always followed by the word 'from'. Hence standard deviation is a measure of change or the distance from a measure of central tendency- which is normally the mean. Hence, standard deviation is different from a measure of central tendency.
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Aaden has a loyalty card good for a discount at his local hardware store. The item he wants to buy is priced at $38, before discount and tax. After the discount, and before tax, the price is $31.54. Find the percent discount.
Answer:
The percent discount is 17.3%.
what is the x intercept of the equation 3x-3y=21
solve for x on a right triangle
A= 18x-2 B= 20 C= ?
The value of x will be;
⇒ x = 4
What is mean by Triangle?
A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.
Given that;
On a Right triangle,
⇒ A = 18x - 2 , B = 20 , C = ?
Now,
Since, On a Right triangle,
One angle is at 90 degree.
Hence, C = 90°
Since, A = 18x - 2 , B = 20 , C = 90°
Hence, We get;
⇒ 18x - 2 + 20 + 90 = 180
⇒ 18x - 2 + 110 = 180
⇒ 18x + 108 = 180
⇒ 18x = 180 - 108
⇒ 18x = 72
⇒ x = 4
Thus, The value of x will be;
⇒ x = 4
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Pls I need help for Mid terms
Answer:
3x at the power of 2 -2x+21
ask for explanation if needed