Answer:
A mathematical proof is an inferential argument for a mathematical statement, showing that the stated assumptions logically guarantee the conclusion.The argument may use other previously established statements, such as theorems; but every proof can, in principle, be constructed using only certain basic or original assumptions known as axioms, along with the accepted rules of inference.
Its got to be in there.
Given the equation of a circle below, find the diameter of the circle. Use only the digits 0-9 to enter the diameter.
Answer:
10
Step-by-step explanation:
Standard form for a circle is
(x - h)² + (y - k)² = r²
where (h, k) is the center and r is the radius
--------------------------------
x² + y² - 18x + 24y = -200
Rearrange
(x² - 18x) + (y² + 24y) = -200
Complete the square for x
(x - 9)² + (y² + 24y) = -200 + (-9)²
Complete the sqaure for y
(x - 9)² + (y + 12)² = -200 + (-9)² + 12²
(x - 9)² + (y + 12)² = 25
Now the equation is in standard form
r² = 25
r = 5
Therefor Diameter = 10
Triangle ABC was dilated using the rule DO,4. Triangle A'B'C' is the result of the dilation.
Point O is the center of dilation. Triangle A B C is dilated to create triangle A prime B prime C prime. The length of O B is three-fourths.
What is OB'?
1.5 units
3 units
4.5 units
6 units
Mark this and return
Answer:
(b) 3 units
Step-by-step explanation:
You want to know the length of OB' when OB = 3/4 and ∆ABC is dilated about point O by a factor of 4.
DilationThe dilation factor multiplies every length.
If OB is 3/4, then OB' is 4(3/4) = 3.
The length of OB' is 3 units.
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Based on this theory, what distance will the handler move from the starting point to the return point if he creates an arc of a circle with radius 70 feet?
Group of answer choices
439.6 feet
3846.5 feet
109.9 feet
1758.4 feet
The Distance the handler will move from the starting point to the return point will be approximately 439.8204 feet.
The distance the handler will move from the starting point to the return point when creating an arc of a circle with a radius of 70 feet, we need to find the length of the arc.
The formula to calculate the length of an arc is given by:
Length of arc = (θ/360) * 2πr
Where:
θ is the central angle of the arc (in degrees)
r is the radius of the circle
In this case, since the handler is creating a full circle, the central angle is 360 degrees.
Length of arc = (360/360) * 2π * 70
Length of arc = (1) * 2π * 70
Length of arc = 2π * 70
Length of arc = 140π
To find the approximate value in feet, we can use the approximation π ≈ 3.14159.
Length of arc ≈ 140 * 3.14159
Length of arc ≈ 439.8204 feet
Therefore, based on the given theory and using a circle with a radius of 70 feet, the distance the handler will move from the starting point to the return point will be approximately 439.8204 feet.
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29.For n ≥ 3, a pattern can be made by overlapping n circles, each of circumference 1 unit, so that each circle passes through a central point and the resulting pattern has order-n rotational symmetry.
For instance, the diagram shows the pattern where n = 7.
If the total length of visible ares is 60 units, what is n?
The value of n can be determined by finding the number of visible arcs in the pattern, which is 30 in this case.
To determine the value of n, we need to find the relationship between the total length of visible areas and the number of circles (n).
In the given pattern, each circle contributes to the visible area twice: once as its circumference and once as the overlapping part with the adjacent circles. Since the circumference of each circle is 1 unit, the visible area contributed by each circle is 2 units.
Therefore, the total length of visible areas can be expressed as 2n. Given that the total length is 60 units, we can set up the equation:
2n = 60
Solving this equation, we find:
n = 60/2 = 30
Thus, the value of n is 30.
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g(t)=−(t−1)
2
+5g, left parenthesis, t, right parenthesis, equals, minus, left parenthesis, t, minus, 1, right parenthesis, squared, plus, 5
What is the average rate of change of
�
gg over the interval
−
4
≤
�
≤
5
−4≤t≤5minus, 4, is less than or equal to, t, is less than or equal to, 5?
The average rate of change over is 1.
Given that;
the function is,
⇒ g (t) = - (t - 1)² + 5
Hence, We need to determine the average rate of change over the interval - 4 ≤ t ≤ 5.
The value of G(-4):
The value of G(-4) can be determined by substituting t = -4 in the function
⇒ g (t) = - (t - 1)² + 5
Thus, we have,
⇒ g (t) = - (-4 - 1)² + 5
⇒ g (t) = - 20
Thus, the value of G(-4) = -20
The value of G(5):
The value of G(5) can be determined by substituting t = 5 in the function , we get,
⇒ g (t) = - (t - 1)² + 5
⇒ g (t) = - (5 - 1)² + 5
⇒ g (t) = - 11
Thus, the value of G(5) is, -11
Now, Average rate of change:
The average rate of change can be determined using the formula,
⇒ G(b) - G (a) / (b - a)
where, a = - 4 and b = 5
Substituting the values, we get,
⇒ G(5) - G (-4) / (5 - (-4))
⇒ ( - 11 - (- 20)) / 9
⇒ 9/9
⇒ 1
Thus, the average rate of change over the interval is. 1.
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Alice wants to use the stack method to pay down her debts listed in the table below. If she applies an extra $150 a month to her debts, what will be the first debt she targets to pay off and what will be the monthly amount she applies to it?
Debts Interest Rate Minimum Monthly Payment
Debt 1 5.5% $75
Debt 2 2.75% $250
Debt 3 13.25% $150
Alice wants to use the stack method to pay down her debts listed in the table below. If she applies an extra $150 a month to her debts, what will be the first debt she targets to pay off and what will be the monthly amount she applies to it?
Debts Interest Rate Minimum Monthly Payment
Debt 1 5.5% $75
Debt 2 2.75% $250
Debt 3 13.25% $150
The first debt that Alice would have to pay based on the Stack method would be the third debt. Option C
How to calculate the debt using the stack methodFrom the stack method, the debt that Alice would have to pay off first would be the debt that has the highest interest rate.
The amount of 150 dollars would then be added to the debt that has the second highest rate.
Hence the amount of debt that would be paid off first would be the first debt based on the stack method.
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The data manager for a state political party gathered data to determine how many citizens would support the party’s senate candidate. He polled citizens in 30 similarly sized senate districts and found a sample mean of 70,438 citizens. Statewide data shows that the population standard deviation is 645.3. What is the approximate 90% confidence interval for this situation?
The approximate 90% confidence interval for this situation is given as follows:
(70244, 70632).
What is a z-distribution confidence interval?The bounds of the confidence interval are given by the rule presented as follows:
\(\overline{x} \pm z\frac{\sigma}{\sqrt{n}}\)
In which:
\(\overline{x}\) is the sample mean.z is the critical value.n is the sample size.\(\sigma\) is the standard deviation for the population.From the z-table, the critical value for a 95% confidence interval is given as follows:
z = 1.645.
The parameters are given as follows:
\(\overline{x} = 70438, \sigma = 645.3, n = 30\)
The lower bound of the interval is given as follows:
\(70438 - 1.645 \times \frac{645.3}{\sqrt{30}} = 70244\)
The upper bound of the interval is given as follows:
\(70438 + 1.645 \times \frac{645.3}{\sqrt{30}} = 70632\)
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Solve the equation. -5(-4+2n)=-10(n-2)
Answer:
0 = 0 means that there are infinite solutions.
Step-by-step explanation:
Equation is -5(-4+2n)=-10(n-2)
1. Distribute the -5 and -10
20 -10n = -10n + 20
2. Subtract 20 from one side to the other to get only 1 variable on 1 side.
-10n = -10n
3. divide -10 to separate the variable from the constant.
n = n
This means there are infinite solutions.
what is this? 30 points!!!!
Answer: X = -351
Step-by-step explanation:
Answer:
x=117
Step-by-step explanation:
You want to calculate the height of a tree in your yard. You stand 25 feet from the base of the tree and with a special instrument, you measure the angle of elevation from where you are on the ground to the top of the tree. You find that the angle of elevation is about 52°. What is the approximate height of the tree?
Between the horizontal line and the line of sight, an angle called the angle of elevation is created. When the line of sight is upward from the horizontal line, an angle of elevation is created.
What is angle of elevation?The angle of elevation is defined in mathematics as "the angle created between the horizontal line and the line of sight when an observer looks upwards." It's always higher than the spectator, usually at a greater height. Angles of depression are created when a person looks downward, and they are the polar opposite of angles of elevation. While studying heights and distances in trigonometry, it is crucial to understand the angle of elevation and depression. Angle, horizontal line, and line of sight are the three general terms used to describe the angle of elevation.
To calculate the height of a tree using trigonometry, you would use the tangent function. Specifically, you would use the tangent of the angle of elevation (52° in this case) and the distance from the base of the tree to where you are standing (25 feet in this case).
The formula is:
height = distance * tangent(angle of elevation)
So, the height of the tree is approximately:
25 * tangent(52) = 25 * 1.19 = 29.75 feet
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which graph passes the vertical line test
Answer:
c
Step-by-step explanation:
Answer:
The 3rd graph
Step-by-step explanation:
The parallelogram shown bellow has an area of 15 units over 2
Answer:
The value of h is \(\frac{5}{2}\) units
Step-by-step explanation:
In any parallelogram, there are two different pair of bases b1, b2 and their corresponding heights h1, h2, where h1 ⊥ b1 and h2 ⊥ b2The area of parallelogram = b1 × h1 OR b2 × h2In the given figure
∵ Every two opposite sides of the parallelogram are equal
∴ The length of the base of the height h is 3 units
∵ The area of the parallelogram = \(\frac{15}{2}\) units
∵ Area of parallelogram = b × h
→ Substitute the values of the area and the base in the rule above
∴ \(\frac{15}{2}\) = 3 × h
∴ \(\frac{15}{2}\) = 3h
→ Divide both sides by 3 to find h
∵ \(\frac{15}{2}\) ÷ 3 = 3h ÷ 3
∴ \(\frac{15}{6}\) = h
→ Simplify the fraction by divide up and down by 3 and switch the 2 sides
∴ h = \(\frac{5}{2}\) units
Find an expression which represents the sum of (-6x + 9y) and (-10x – 6y) in
simplest terms.
Answer:
-16x+3y
Step-by-step explanation:
sum=add
(-6x + 9y)+(-10x – 6y)
Combine like terms
-6x+(-10x)
-16x
9y+(-6y)
3y
-16x+3y
A survey asks people if they like science fiction or fantasy books. 114
people like sci fi and fantasy. 96 like sci fi but do not like fantasy. 210 do
not like sci fi and do not like fantasy. 318 do not like sci fi. What is the total
number of people who like fantasy?
The total number of people who like fantasy is 222.
Option A is the correct answer.
We have,
From the table
The number of people who like fantasy but do not like Sci-Fi.
= x
Now,
We can write an equation from the table as,
x + 210 = 318
Solve for x.
x = 318 - 210
x = 108
Now,
From the table again,
We can make an equation as,
114 + 108 = 222
This is the total number of people who like fantasy.
Thus,
The total number of people who like fantasy is 222.
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The length of a rectangle is 3 ft less than twice the width, and the area of the rectangle is 44 ft squared. find the dimensions of the rectangle
The dimensions of the rectangle are 4 ft by 5 ft.
Given that the length of a rectangle is 3 ft less than twice the width, and the area of the rectangle is 44 sq.ft. We have to find the dimensions of the rectangle. Let's consider the width of the rectangle as x ft.Length of the rectangle = (2x - 3) ftArea of the rectangle = Length x Width44 = (2x - 3) x x44 = 2x^2 - 3x44 = x (2x - 3)2x^2 - 3x - 44 = 0To solve for x, we will factorize the equation by splitting the middle term.2x^2 - 8x + 5x - 20 = 0Factorize2x(x - 4) + 5(x - 4) = 0(x - 4) (2x + 5) = 0x = 4 ft (since the width of a rectangle can't be negative)or 2x = -5This gives us an invalid value, so x = 4 ftNow that we have the width of the rectangle, we can calculate the length as follows:Length of the rectangle = (2x - 3) ftLength of the rectangle = (2 * 4) - 3Length of the rectangle = 8 - 3Length of the rectangle = 5 ft.
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Which of the following could be the lengths of the sides for a triangle that is similar to the triangle shown?
Step-by-step explanation: {KILLA KWEEN} DAISAN NO BAKUDAN--/|BITES ZA DUSTO|\
Two girls divided $1.60 in the ratio 5 : 3. How much more does one girl get than the other?
let's convert those $1.60 to pennies, that's 160 pennies, now, let's divide those 160 by (5 + 3) and distribute between the girls accordingly
\(\stackrel{Girl1}{5}~~ : ~~\stackrel{Girl2}{3} ~~ \implies ~~ \stackrel{Girl1}{5\cdot \frac{160}{5+3}}~~ : ~~\stackrel{Girl2}{3\cdot \frac{160}{5+3}} ~~ \implies ~~ \stackrel{Girl1}{5\cdot 20}~~ : ~~\stackrel{Girl2}{3\cdot 20} \\\\\\ \stackrel{Girl1}{100}~~ : ~~\stackrel{Girl2}{60}\qquad \textit{one girl got \underline{40 more cents } than the other girl}\)
Answer the question in the file
Answer:
30
Step-by-step explanation:
50-2×(3^2+1)
50-2×(9+1)
50-2×(10)
50-20
30
Hey there!
ANSWER: \(30\)EXPLANATION:\(50-2*(3^2+1)=?\)
You will need to use the order of operations to solve. We will need to start with parenthesis. The parenthesis includes exponents which comes after.
\((3^2+1)=10\)
Now go to multiplication.
\(2*10=20\)
Now move to subtraction since that's what we have left.
\(50-20=30\\30(ANSWER)\)
Hope this helps!
\(\text {-TestedHyperr}\)
160 students went on a field trip. Five buses were filled and 15 students traveled in cars. How many students were in each bus?
Each bus had ____ students.
is there another square other than the own drawn to make a reflective symmetry?
PLS HURRY I AM GIVING BRAINLIEST!!!
the question is in the photo!!
Jordan spend 25 minutes writing each dayNoHow much time does Jordan spend writing each dayFrom the question, we have the following parameters that can be used in our computation:D + W = 75W + 25 = DSo, we haveW + W + 25 = 75EvaluateW = 25This means that Jordan spends 25 minutes on writing is it possible?Based on the answer in (a), the truth statement is No
Estimate the product. 22×2.4 = _×_=_ Solve using an area model and the standard algorithm. Remember to express your products in standard form.
What is 26/15 as a whole number?
Answer:
1 11/15
Step-by-step explanation:
please help me asap
8. 100
9. 41
10. 6
11. 6 are the answers
Given what you know about credit, what do you think would be the long-term impact of racial
inequities in credit approval?
what's the solution to the system of equations below.
Hurry please!!!
Answer:
infinatly many solutions
Step-by-step explanation:
x can equal anything and still be correct.
Answer:
Seriously............ .
4.
Mrs. Smith has a cardboard box in the shape of a rectangular prism. She plans to cover it with
paper. The dimensions of the box are 3in by 4in by 6in. What is the minimum amount of paper
needed to completely cover the box?
Answer:
108 inches²
Step-by-step explanation:
Rectangular prism = cuboid
To find how much paper is required to cover the box, we need to find the TSA of the cuboid.
TSA of cuboid = 2 [LB + LH + HB] = 2 [ (3×4) + (3×6) + (4×6) ] = 2 [ 12+18+24 ] = 2 × 54 = 108 inches²
giving brainliest *easy*!!
Answer:
452.16 square yards
Step-by-step explanation:
The equation for the SA of a sphere is A=4πr2
Substituting r = 6 yards : A= 4 * 3.14 * 6^2 = 452.16 square yards
Answer:
452.16
Step-by-step explanation:
i need help asap plz
Answer: it’s C
Step-by-step explanation: because my teacher told me
Determine the percentile of 6.2 using the following data set.
4.2 4.6 5.1 6.2 6.3 6.6 6.7 6.8 7.1 7.2
Your answer should be an exact numerical value.
The percentile of 6.2 is |
%.
The percentile of 6.2 in the given data set is 40%.
To determine the percentile of 6.2 in the given data set, we can use the following steps:
Arrange the data set in ascending order:
4.2, 4.6, 5.1, 6.2, 6.3, 6.6, 6.7, 6.8, 7.1, 7.2
Count the number of data points that are less than or equal to 6.2. In this case, there are 4 data points that satisfy this condition: 4.2, 4.6, 5.1, and 6.2.
Calculate the percentile using the formula:
Percentile = (Number of data points less than or equal to the given value / Total number of data points) × 100
In this case, the percentile of 6.2 can be calculated as:
Percentile = (4 / 10) × 100 = 40%
The percentile of 6.2 in the sample data set is therefore 40%.
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