Answer:
Two lines are parallel if their slopes are equal.
To indirectly measure the distance across a river, Madeline stands on one side of the river and uses sight-lines to a landmark on the opposite bank. Madeline draws the diagram below to show the lengths and angles that she measured. Find PR, the distance across the river. Round your answer to the nearest foot.
Therefore, the distance across the river is approximately 283 feet (rounded to the nearest foot).
What is equation?An equation is a mathematical statement that uses symbols, such as letters and numbers, to show that two expressions are equal. It typically consists of two sides separated by an equals sign. The expressions on both sides can contain variables, constants, functions, and operators, and the goal is often to solve for the value(s) of the variable(s) that make the equation true. Equations are used extensively in mathematics, science, engineering, and many other fields to model real-world phenomena, make predictions, and solve problems.
Here,
Without a diagram, it is difficult to determine the exact location and orientation of the points and lines. However, based on the information provided, we can use the Law of Sines to find the length of PR.
In triangle ROC, we have:
sin(CEO) = RO/OC
sin(CEO) = 165/330
sin(CEO) = 0.5
CEO = sin⁻¹(0.5)
CEO = 30 degrees
In triangle REO, we have:
sin(ERO) = RO/RE
sin(ERO) = 165/210
sin(ERO) = 0.7857
ERO = sin⁻¹(0.7857)
ERO = 51.06 degrees
Now, in triangle PER, we have:
sin(PER) / 210 = sin(ERO) / PR
Therefore, we can solve for PR:
PR = 210 * sin(ERO) / sin(PER)
PR = 210 * sin(51.06) / sin(180 - CEO - ERO)
Plugging in the values, we get:
PR = 210 * sin(51.06) / sin(99.94)
PR ≈ 283.2 feet
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КУ Meccahi Grant Question #21 The perimeter of a rectangle is given by the algebraic Part A. expression 2x2 + 4x + 4. The width of this rectangle Create an algebraic expression in terms of x to 2 is given by the algebraic expression x? – 4. represent the length of the rectangle. The perimeter of a rectangle is given by the algebraic expression 2x2 + 4x +4. The width of this rectangle is given by the algebraic expression x2 - 4. Part A Create an algebraic expression in terms of x to represent the length of the rectangle. Part B If x = 3, what is the area of this rectangle in squa units? Remember to include units.
Answer: The question requires an understanding of how to compose and decompose multi digit numbers. The expanded form 70,000 + 4,000 + 70 + 2 corresponds to the number 74,072, which is the population of Davidson County.
(sorry if i'm wrong)
:(
Given the following, determine the set (B n C)'.
U= {x|x EN and x < 10}
B = {x|x EN and x is even and x< 10}
C = {x|x E N and x < 10}
Answer:
Step-by-step explanation:
U={x|x∈N and x<10}
or U={1,2,3,4,5,6,7,8,9}
B={x|x∈N and x is even and x<10}
or
B={2,4,6,8}
C={x|x∈N and x<10}
or
C={1,2,3,4,5,6,7,8,9}
(B∩C)={2,4,6,8}
(B∩C)'={1,3,5,7,9}
If a student has a GPA 3.0 or higher, she has a chance 0.8 of getting in a preferable major; with a GPA lower than 3.0, the chance will drop to 0.2. Suppose 20% of the students have their GPA's "> 3.0". If Frank fails to get in his preferable major, then the probability that his GPA is 3.0 or higher is equal to 4/5, 5/18, 1/5, 1/17
1/17 is the probability that his GPA .
What is the simple definition of probability?
A probability is a number that expresses the possibility or likelihood that a specific event will take place.
Probabilities can be stated as proportions with a range of 0 to 1, or as percentages with a range of 0% to 100%.
If a student has a GPA 3.0 or higher , she has a chance 0.8 getting in a preferable major with a GPA lower than 3.0, the chance will drop to 0.2 . Suppose 20% of the students have their GPA's> 3.0" .
If frank fails to get in this perferable major , then the probability that his GPA is 3.0 or higher is equal to 4/5, 5/18, 1/5 , 1/17
GPA ≥ 3
P(P/G) = 0.8
P(P/Gc ) = 0.2
P(G) = 0.2
= { 1 - 0.8 } 0.2/ { 1 - 0.8 } 0.2 + { 1 - 0.2 } { 1 - 0.2 }
= 1/17
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Sidney wants to increase the amount of
time he spends studying.
Answer:
if this is ur question, then ur answer is 53
Write an equation that is equivalent to 1/4 plus 1 plus 3/4 minus 2/3 minus 1/2
Answer:1/4 + 1/4 = 1/2 = 0.5
\( - x \div 4 \geqslant 2\)That's the Math problem
Calc II Question
The base of s is an elliptical region with boundary curve 9x^2 + 4y^2 = 36
Cross sections perpendicular to the x axis are isoscelees right triangle with hypotension in the base.
Correct answer is 24 but I don't know how they go that
Answer:
See below for explanation
Step-by-step explanation:
The area of an isosceles triangle is \(A=\frac{1}{2}bh\), so let's write the base as an equation of y:
\(\displaystyle 9x^2+4y^2=36\\\\4y^2=36-9x^2\\\\y^2=9-\frac{9}{4}x^2\\\\y=\pm\sqrt{9-\frac{9}{4}x^2\)
As you can see, our ellipse consists of two parts, so the hypotenuse of each cross-section will be \(\displaystyle 2\sqrt{9-\frac{9}{4}x^2\), and each height will be \(\displaystyle \sqrt{9-\frac{9}{4}x^2}\).
Hence, the area function for our cross-sections are:
\(\displaystyle A(x)=\frac{1}{2}bh=\frac{1}{2}\cdot2\sqrt{9-\frac{9}{4}x^2}\cdot\sqrt{9-\frac{9}{4}x^2}=9-\frac{9}{4}x^2\)
Since we'll be integrating with respect to x because the cross-sections are perpendicular to the x-axis, then our bounds will be from -2 to 2 to find the volume:
\(\displaystyle V=\int^2_{-2}\biggr(9-\frac{9}{4}x^2\biggr)\,dx\\\\V=9x-\frac{3}{4}x^3\biggr|^2_{-2}\\\\V=\biggr(9(2)-\frac{3}{4}(2)^3\biggr)-\biggr(9(-2)-\frac{3}{4}(-2)^3\biggr)\\\\V=\biggr(18-\frac{3}{4}(8)\biggr)-\biggr(-18-\frac{3}{4}(-8)\biggr)\\\\V=(18-6)-(-18+6)\\\\V=12-(-12)\\\\V=12+12\\\\V=24\)
Therefore, this explanation confirms that the correct volume is 24!
Felipe is selling raffle tickets. For every 4 tickets, he charges $24.
Complete the table below showing the number of tickets and the amount Felipe charges.
Answer:
top row would be 5 and 8 and the bottom row would be 42 and 60
what is the most effluence first step to isolate the variable term on one side of this equation -9x=-4x+5
solve and represent on a graph x+4≥10x-23
i need help can someone help me right now!!!!!!
(a) | BD | bisects | AC | (reason : Given)
(b) |AD| ≅ |CD| (reason: |BD| is the perpendicular bisector of segment AC).
(c) ∠ABD ≅ ∠CBD (reason: | BD | bisects angle ABC)
(d) ∠A ≅ ∠ C (reason: complementary angles of a right triangle)
What is the complete proof of the congruent angles?Congruent angles are the angles that have equal measure. So all the angles that have equal measure will be called congruent angles.
From the first statement, we will complete the flow chart as follows;
line BD bisects line AC (reason : Given)
line AD is congruent to line CD (reason: line BD is the perpendicular bisector of segment AC)
Angle ABD is congruent to angle CBD (reason: line BD bisects angle ABC)
Angle A is congruent to angle C (reason: angle ABD = angle CBD, and both triangles ABD and CBD are right triangles).
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Sarah Wiggum would like to make a single investment and have $1.7 million at the time of her retirement in 34 years. She has found a mutual fund that will earn 7 percent annually. How much will Sarah have to invest today
Answer:
Sarah has to invest $502,958.58 today.
Step-by-step explanation:
This is a simple interest problem.
The simple interest formula is given by:
\(E = P*I*t\)
In which E is the amount of interest earned, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.
After t years, the total amount of money is:
\(T = E + P\)
In this question:
\(t = 35, I = 0.07, T = 1700000\)
She has to invest P today.
\(T = E + P\)
\(1700000 = E + P\)
\(E = 1700000 - P\)
So
\(E = P*I*t\)
\(1700000 - P = P*0.07*34\)
\(3.38P = 1700000\)
\(P = \frac{1700000}{3.38}\)
\(P = 502958.58\)
Sarah has to invest $502,958.58 today.
if q= ut + ½ ft find q when u = 20, t= 10 and f= 13
Answer:
q=200+13×5=200+65=265
Why does 2 plus 2 = 4 but not 5
Answer: bc its numbers
Step-by-step explanation:
Answer:
Because the sum of two even numbers is even.
Hope this helps! :)
What the meaning of "f is order-preserving if x < y implies f(x) < f(y)"?
An order-preserving function is a function that preserves the order of its inputs. In other words, if x is less than y, then f(x) will be less than f(y).
The statement "f is order-preserving if x < y implies f(x) < f(y)" means that if x is less than y, then f(x) must be less than f(y). This is a necessary condition for a function to be order-preserving. However, it is not a sufficient condition. For example, the function f(x) = x^2 is not order-preserving, because 2 < 3, but f(2) = 4 > f(3) = 9.
In summary, order-preserving functions are useful in situations where we need to preserve the order of a set of data.
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(14x²+13x+12) - (7x²+20x+4)
PLS HELPP Find the value of x.
7
10
6
3
Answer:
10
Step-by-step explanation:
An rock is thrown downward from a platform that is 163 feet above ground at 40 feet per second. Use the projectile formula h = − 16 t 2 + v 0 t + h 0 to determine when the rock hit the ground.
Answer:
The rock hits the ground at t = 4.68 seconds.
Step-by-step explanation:
The height of the rock after t seconds is given by the following equation:
\(h(t) = -16t^{2} + v(0)t + h(0)\)
In which v(0) is the initial speed and h(0) is the initial height.
An rock is thrown downward from a platform that is 163 feet above ground at 40 feet per second.
This means that \(v(0) = 40, h(0) = 163\)
So
\(h(t) = -16t^{2} + 40t + 163\)
Solving a quadratic equation:
Given a second order polynomial expressed by the following equation:
\(ax^{2} + bx + c, a\neq0\).
This polynomial has roots \(x_{1}, x_{2}\) such that \(ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})\), given by the following formulas:
\(x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}\)
\(x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}\)
\(\bigtriangleup = b^{2} - 4ac\)
When the rock hits the ground?
When h(t) = 0. So
\(h(t) = -16t^{2} + 40t + 163\)
\(-16t^{2} + 40t + 163 = 0\)
So
\(a = -16, b = 40, c = 163\)
Then
\(\bigtriangleup = (40)^{2} - 4*(-16)*163 = 12032\)
\(t_{1} = \frac{-40 + \sqrt{12032}}{2*(-16)} = -2.18\)
\(t_{2} = \frac{-40 - \sqrt{12032}}{2*(-16)} = 4.68\)
Time is a positive measure, then:
The rock hits the ground at t = 4.68 seconds.
Which ordered pair is a solution to the system of linear equations? x + 4y = 3 y = −4x − 3 (1, 1) (1, −1) (−1, 1) (−1, −1)
Answer:
(-1,1)
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
equation form:
x=-1, y=1
have a great day and thx for your inquiry :)
By substituting each of the provided options into the given system of linear equations, it is revealed that the ordered pair (-1, 1) is a valid solution for both the equations.
The correct answer is (-1, 1)
In mathematics, a system of linear equations consists of multiple linear equations with the same variables. These equations describe various relationships among these variables, typically representing lines in a multi-dimensional space. Solving such systems involves finding values for the variables that satisfy all equations simultaneously. Methods like substitution, elimination, or matrix algebra can be used to solve these systems. These systems are fundamental in fields like physics, engineering, economics, and computer science for modeling and solving real-world problems involving multiple interconnected variables.
We can solve this problem by substituting values from the given options into the equations and checking for which option both equations are valid. The system of linear equations is: x + 4y = 3 and y = -4x - 3.
Option (1, 1): For x = 1 and y = 1, our system becomes 1 + 4*1 = 5 and y = -4*1 - 3 = -7. Both do not hold true.Option (1, -1): For x = 1 and y = -1, our system becomes 1 + 4*-1 = -3 and y = -4*1 - 3 = -7. Both do not hold true.Option (-1, 1): For x = -1 and y = 1, our system becomes -1 + 4*1 = 3 (correct) and y = -4*-1 - 3 = 1 (correct). Thus, option (-1, 1) is a solution to the system of equations.Option (-1, -1): For x = -1 and y = -1, our system becomes -1 + 4*-1 = -5 and y = -4*-1 - 3 = 1. Both do not hold true.Therefore, the ordered pair that is a solution to the system of linear equations is (-1, 1).
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Select the geometric figure that fits the following description.
the collection of all points that are equidistant from a given point
Choice D is correct
Every point on circle is equidistant from the point at its centre and that fixed distance = radius of that circle.
help me pleaseee!!;)
So on solving the provided question, we can say that the mathematical expression will be as follows, z-12, 17xy, 4x+75.
What kinds of expressions are examples?Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression. In the expression 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +. In mathematics, it is possible to multiply, divide, add, or remove. The construction of an expression is as follows: Expression, number, and mathematical operator Numbers, variables, and functions are the building blocks of a mathematical expression (such as addition, subtraction, multiplication or division etc.) Expressions and phrases can be contrasted.
x - 6 + z = 9-6+5 = 8
5*(x+y) = 5*(9 + 10 ) = 95
2x + z = 2*9 + 5 = 23
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Which number is greater than the absolute value of LaTeX: -\frac{3}{8}− 3 8?
Answer:
0.5
Step-by-step explanation:
We have to find a number which is greater than the absolute value of -3/8.
Absolute value of -3/8 = 3/8
3/8=0.375
Now, we have to find a number which is greater than 0.375
1/4=0.25
0.25 is smaller than 0.375
0.5 is greater than 0.375
also -5/8 and -1/8 are less than 0.375
Hence, the only number which is greater than the absolute value of -3/8 is:
0.5
Step-by-step explanation:
Solving a word problem on proportions using a unit rate
Dante drove 871 miles in 13 hours.
At the same rate, how long would it take him to drive 603 miles?
5. GARDEN A 12-foot-by-9-foot fenced area has walking paths along one of the long sides and one of the short sides with a uniform width x. Flowers are planted in the remaining part of the enclosed area. The part covered by flowers is half of the entire enclosed area. What are the dimensions of the area covered by flowers?
The dimensions of the area covered by flowers are 9 ft and 6 ft.
What is Area of Rectangle?The area of Rectangle is length times of width.
The given garden is a rectangle
Since the garden is a rectangle, its area is A = LW where
L = length = 12 ft and
W = width = 9 ft
So, A = Length×Width
= 12×9
= 108 ft²
As flowers are planted on the remaining side of the garden with a path of width x on on side, we have that the dimensions of the area covered by flowers is
length, L' = 12 - x and
width, W' = 9 - x
Since the planted part is rectangle, its area is A' = L'W' where L' 12 - x and W'= 9 - x
So, A' = L'W'
= (12 - x)(9 - x)
Since it is given that he part covered by flowers is half of the entire enclosed area, we have that
A' = A/2
(12 - x)(9 - x) = 108 ft²/2
(12 - x)(9 - x) = 54
Expanding the brackets, we have
108 - 21x + x² = 54
x² - 21x + 108 - 54 = 0
x² - 21x + 54 = 0
By using quadratic formula, we find value of x
We get x=18 or x=3
Since x cannot be greater than the greatest dimension, we choose x = 3. length, L' = 12 - x = 12 - 3 = 9 ft and the width W' = 9 - x = 9 - 3 = 6 ft
Hence, the dimensions of the area covered by flowers are 9 ft and 6 ft.
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what is 14x three over seven
pls today I have it for tomorrow
Answer:
6/5 x 5/3 is 2
if that's what you need help with
step-by-step explanation
Helpppppppppp meeeeeeeee
Answer: 20
Step-by-step explanation:
= 1/5 (10)^2
= 1/5 * 100
= 20
Answer: 20
Step-by-step explanation:
To solve this problem, we need to use the order of operations.
Parenthesis
Exponent
Multiply
Divide
Add
Subtract
\(\frac{1}{5}(6+3+1)^2\) [parenthesis]
\(\frac{1}{5}(10)^2\) [exponent]
\(\frac{1}{5}(100)\) [multiply]
\(20\)
Now, we know the answer is 20.
Fill in the blank using the scaling factor that makes the number sentence true. 5.3 × > 5.3 0.886 or 1.00 or 1.003
The given options, the only value greater than 1 is 1.003. Therefore 0.886, which is less than 1 and makes the inequality true.
The given number sentence is 5.3 × > 5.3, where we need to find the scaling factor that makes the inequality true. To do this, we can divide both sides of the inequality by 5.3. This gives us:
5.3 × x > 5.3 ÷ 5.3 × k
We need to find the value of k that makes the inequality true. Simplifying the right-hand side of the equation, we get:
5.3 ÷ 5.3 × k = k × 1 = k
Substituting this into our equation, we get:
5.3 × x > k
We know that 5.3 × 1 = 5.3, which means that k must be greater than 1 to satisfy the inequality. Among the given options, the only value greater than 1 is 1.003. However, this value would make the inequality too large, so it is not the correct answer.
The correct answer is therefore 0.886, which is less than 1 and makes the inequality true.
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Please give me the right answer.