Probability that a fifth bird landing at a randomly selected point between birds 1 and 4 will sit at some point between birds 3 and 4 is 1/3.
As given,
Total number of birds sitting on a telephone wire=4
Possible sitting arrangement is
Bird1__Bird2 __Bird3___Bird4
Total possible number of space between birds 1 to 4=3
Possible favourable outcomes (between 3 and 4)=1
Probability fifth bird sitting between point 3 and 4
= (Number of favourable outcomes)/ Total number of outcomes
= 1/3
Therefore, probability of a fifth bird sitting at some point between birds 3 and 4 is 1/3.
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Use the spinner to find the probability.
a. P(pointer landing on blue)
The probability of spinner pointer landing on blue color region is equal to 1/3 .
As given in the question,
Total colors in the spinner is equal to 6
Each color is 2 times
Total number of colored region =6
Number of blue region = 2
Probability of pointer landing on blue color region denoted by P(B)
Probability is
= ( Total number of favourable outcomes) / (Total number of outcomes )
⇒ P(B) = 2 / 6
⇒ P(B) = 1 /3
Therefore, the probability of spinner pointer landing on blue color region is equal to 1/3.
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Determine the length of the leg of a 45°-45°-90° triangle with a hypotenuse, length of 11 .
The two legs of the right isosceles triangle are both [tex]\frac{11\sqrt{2} }{2}[/tex]
Since two of the angles in this triangle are 45 degrees and it has a 90 degree angle. It is a right isosceles triangle. An isosceles triangle has two sides the same, which have to be the two legs in this triangle because a triangle can not have two hypotenuses.
According to the Pythagorean Theorem:
[tex]a^{2}+b^{2} =c^{2}[/tex]
where a and b are the legs and c is the hypotenuse.
Since two legs in this right triangle are the same , the formula can be altered to be:
[tex]a^{2}+a^{2} =c^{2}[/tex]
[tex]2a^{2} =c^{2}[/tex]
Putting the value of c is 11
[tex]2a^{2} =11^{2}\\ \\ 2a^{2} = 121\\ \\a^{2} = \frac{121}{2\\}\\ a =\sqrt{\frac{121}{2} }[/tex]
[tex]a =\frac{121}{\sqrt{2} }\\ \\a =\frac{11\sqrt{2} }{2}[/tex] ~ [tex]7.78[/tex]
Hence, The two legs of the right isosceles triangle are both [tex]\frac{11\sqrt{2} }{2}[/tex]
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Identify a pattern and find the next three numbers in the pattern. 144,132,120,108, . . .
The given pattern forms an Arithmetic progression.
Complete pattern is 144,132,120,108,96,84,72,....
As the given series is in A.P.
⇒ a5 = a + (n - 1)d
⇒ a5 = 144 + (4)d
⇒ a5 = 144 +4 (-12)
⇒ a5 = 144 - 48
⇒ a5 = 96
⇒ a6 = 144 + (6 - 1)d
a6 = 84
⇒ a7 = 144 + (7 - 1)d
a7 = 144 + 6d
a7 = 72
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A line has a slope of 6/5 and includes the points (-2, -3) and (r, 3). What is the value of r?
Answer:
r = 3
Step-by-step explanation:
Slope-intercept form of a linear equation:
[tex]\large\boxed{y=mx+b}[/tex]
where:
m is the slope.b is the y-intercept.Given:
Slope = ⁶/₅Point = (-2, -3)Substitute the given slope and point into the formula and solve for b:
[tex]\begin{aligned}y & = mx+b\\\implies -3 & = \dfrac{6}{5}(-2)+b\\-3 & = -\dfrac{12}{5}+b\\-3 +\dfrac{12}{5} & = b\\\implies b & = -\dfrac{3}{5}\end{aligned}[/tex]
Substitute the given slope and found value of b into the formula to create an equation for the line:
[tex]\boxed{y=\dfrac{6}{5}x-\dfrac{3}{5}}[/tex]
Substitute the point (r, 3) into the equation and solve for r:
[tex]\begin{aligned}y & = \dfrac{6}{5}x-\dfrac{3}{5}\\\implies 3 & = \dfrac{6}{5}r-\dfrac{3}{5}\\5 \cdot 3& = 5 \cdot \left(\dfrac{6}{5}r-\dfrac{3}{5}\right)\\15 & = 6r-3\\15+3&=6r-3+3\\ 18 & = 6r\\\dfrac{18}{6} & = \dfrac{6r}{6}\\3 & = r\\ \implies r & =3\end{aligned}[/tex]
Solution
Therefore, the value of r is 3.
How many days are there from May 27th to June 5th (include both days)?
Answer: 10
Step-by-step explanation:
its 10 x
may 27, 28, 29, 30, 31, june 1, 2, 3, 4, 5,
1. 2. 3. 4. 5. 6. 7 8 9. 10
Naturally occurring element x exists in three isotopic forms: x-28 (27.979 u, 77.11 bundance), x-29 (28.976 u, 8.00 bundance), and x-30 (29.974 u, 14.89 bundance). calculate the atomic weight of x.
28.1 amu is the atomic weight of x.
What is atomic weight defined as?
The term "atomic weight" refers to an atom's overall weight. With the addition of a small amount from the electrons, it is roughly equal to the sum of the protons and neutrons.
What does atomic weight vs. atomic mass mean?
Atomic mass is the measure of the mass of a single atom or isotope. The average mass of an element in relation to all of its isotopes and their relative abundances is known as its atomic weight. The atomic masses of isotopes have no bearing on atomic mass.The atomic weight of the element will be a weighted average of the isotopes based on the relative abundance:
(27.977 x 0.9221) + (28.976 x 0.0470) + (29.974 x 0.0309
) = 25.798 + 1.362 + 0.926
= 28.08 = 28.1 amu
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Solve each system by elimination.
6x - 2y = 11 , -9x + 3y = 16
By elimination, the system of equations, 6x - 2y = 11 and -9x + 3y = 16, has no solutions.
A system of equations is a set of two or more equations which includes common variables. To solve system of equations, we must find the value of the unknown variables used in the equations that must satisfy all the equations.
There are three methods that can be used to solve system of equations.
1. Elimination
2. Substitution
3. Graphing
Using the elimination method, given two equations in x and y, a variable should be eliminated by adding/subtracting the two equations.
Multiply first equation 1 by 3 and equation 2 by -2.
6x - 2y = 11 ⇒ 18x -6y = 33 (equation 1)
-9x + 3y = 16 ⇒ 18x - 6y = -32 (equation 2)
Since the new equation of the two equations have the same coefficients, but different constants, then the two lines are in parallel.
Hence, the system of equations has no solutions.
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Kayla rode her bike 75 miles home from college one weekend and then rode the bus back to college. It took her 2 hours less to ride back to college on the bus than it took her to ride home on her bike, and the average speed of the bus was 10 miles per hour faster than kayla’s biking speed. Find kayla’s biking speed
When Kayla rode her bike home from college one weekend, her biking speed is 15 miles per hour
Speed is defined as the ratio between the distance and the amount of time an object traveled.
speed = distance/time
If the average speed of the bus was 10 miles per hour faster than Kayla’s biking speed, we have:
average speed of the bus = 10 mph + biking speed
let x = biking speed
y = average speed of the bus
y = 10 + x
Covering the same distance of 75 miles, calculate the time it took her riding the bus and the bike.
time = distance/speed
time riding the bus = 75 miles/(10 + x)
time riding the bike = 75 miles/x
If it took her 2 hours less to ride back to college on the bus than it took her to ride home on her bike
time riding the bus = time riding the bike - 2
75 miles/(10 + x) = (75 miles/x) - 2
75/(10 + x) = (75 - 2x)/x
Multiplying both sides by x(10 + x),
x(10 + x)[75/(10 + x)] = x(10 + x)[(75 - 2x)/x]
75x = 750 - 20x + 75x - 2x^2
2x^2 + 20x - 750 = 0
x^2 + 10x - 375 = 0
(x - 15)(x + 25) = 0
x = 15 ; x = -25
Since we cannot have negative amount of time, choose x = 15.
Hence, Kayla's biking speed is 15 miles per hour.
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Answer this question please very important
will give loads of points
Answer:
102.9 m
Step-by-step explanation:
The shortest distance from A to C would be diagonally from A to C.
This comprises:
Two straight paths of equal length (shown in blue on the attached diagram).Half the circumference of the central circle (shown in red on the attached diagram).The length of the diagonal between A and C can be calculated using Pythagoras Theorem:
[tex]\begin{aligned}c^2&=a^2+b^2\\\implies \sf AC^2 & = \sf AB^2+AD^2\\\sf AC^2 & = \sf 50^2+80^2\\\sf AC^2 & = \sf 2500+6400^2\\\sf AC^2 & = \sf 8900\\\sf AC & = \sqrt{\sf 8900}\\\sf AC & = \sf 94.33981132\;m\end{aligned}[/tex]
Subtract the diameter of the circular path from this to calculate the sum of the lengths of the straight paths.
[tex]\implies \sf 94.33981132-15=79.33981132\;m[/tex]
To calculate the length of the circular part of the path, find half the circumference of the central circle:
[tex]\begin{aligned}\implies \textsf{Half the circumference} & = \sf \dfrac{1}{2} \pi d\\& =\sf \dfrac{1}{2} \pi (15)\\& =\sf 23.5619449\;m\end{aligned}[/tex]
Therefore, the shortest distance from A to C across the park is:
[tex]\begin{aligned} \implies \textsf{Shortest distance} & = \sf 79.33981132+23.5619449\\& = \sf 102.9017562\\& = \sf 102.9\;m\;(nearest\:tenth)\end{aligned}[/tex]
Reya says
"The two sequences T(n) = 7 + 5n and
S(n) = 54 - 6n don't have any terms in
common because when I solve T(n) = S(n)
I get n = 4 which isn't an integer.
Give a reason why Reya is wrong.
Answer:
Step-by-step explanation:
4 + 4 = 4 so 9 is equal to 6
PLEASE help me :( WEEK 3, LETTER C. PLEASE SHOW YOUR WORK
Using proportions, it is found that Chris made the most money in the week.
What is the missing information?The rates for Michelle's works are missing, as follows:
Rogers: $5 an hour.Pringles: $6.50 an hour.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.
Chris's salary is given by the sum of the base plus commissions, hence:
C = 250 + 0.015 x 1500 = $272.5.
Michelle's salary is given as follows, considering she is paid double the hourly rate for the holiday:
M = 12 x 2 x 6.50 + 10 x 5 = $206.
Alex salary's is found as follows, considering the rate and the hour and a half for the weekend:
A = 5 x 1.5 x 7 + 7 x (6 + 5.75 + 4.5 + 6.75 + 5.5) = $252.
Hence Chris made the most money in the week.
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Each sequence has eight terms. Evaluate each related series. 1765,1414,1063, ........ ,-692
The result of the evaluation of the series described by:
a1 = 1765a2 = 1414a3 = 1063an = -692 is:∑ = 3755.5
Sigma notationThe sigma notation is a mathematical operation used to determine the final value of the sum of "n" terms consecutively, when dealing only with numbers without variables this is known as an arithmetic series.
What is a series?A series is the summation of a set of numbers or sequences.
The equation for this type of problem is:
∑ = n(a1 + an)/2
n : number of termsa1 : first terman : last termOur values are:
1765,1414,1063, ........ ,-692
1765 - 1414 = 3511414 - 1063 = 3511765 - 351X = -692
351X = 1765 + 692
X = 7
a1 =1765an = -692n = 7∑ = 7(1765 - 692)/2
∑ = 3755.5
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Use the values of a₁ and S n to find the value of a n a₁ =-6 and S₅₀=-5150 ; a₅₀
Computing the sum of the first term in the arithmetic series is relatively straightforward. Just add these values together. However, adding, say, the first 100 words creates more problems. Instead of manually summing all these terms, mathematicians devised an arithmetic progression formula that efficiently computes the sum of the arithmetic progression.
a1 =-6
S50 = -5150
an=?
Sn=n(a1+an)/2
So, to find an
((2*sn) /n)-a1=an
((2*-5150) /50) -(-6)=an
An=200
D=-194/49
Here the first term a=-6,
Common difference d=-3.96
We know that,
f(n)=a+(n-1)d
f(50)=-6+(50-1)(-3.96)
=-6+(-193.99)
=-199.99
We know that,
Sn=n2[2a+(n-1)d]
∴S50=502⋅[2(-6)+(50-1)(-3.96)]
=25⋅[-12+(-193.99)]
=25⋅[-205.99]
=-5149.78
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Which correctly applies the distributive property?
Answer:
The last one.
Step-by-step explanation:
2(x + 3)
= 2*x + 2*3
= 2x + 6.
Barbara has 526 pieces of candy that she wants to share with the 19 students in her class. Barbara wants
to make sure that each classmate gets the same amount of candy. How many pieces of candy will each
of her friends receive and how many pieces will she have left over for herself
She will share 513 candies, each students will receive 27 candies and the amount remaining is 13.
How to find the amount of candy each class mate had?She has 526 pieces of candy that she wants to share with the 19 students in her class.
She makes sure that each classmate gets the same amount of candy.
This means each person or student gets the same or equal amount of candy.
let
x = amount of candy each student gets.
Therefore, the total amount of candy she shared is 526 pieces and the total number of students is 19.
Hence,
x = amount of candy each student gets = 526 / 19
x = amount of candy each student gets = 27.6842105263
x = amount of candy each student gets = 27
Therefore, she will share 513 candies, each students will receive 27 candies and the amount remaining is 13.
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Find the area of polygon with A(-5,-2) ,B (4,-2), C (4,-7) , D (-5,-7))?
Answer:
A=45
Step-by-step explanation:
Area of a rectangle equation: A=L*W
A=9*5=45
2) 1, 3, 9, 18, 54, ...
What is the common ratio?
Answer: times 3 each time or 3
Step-by-step explanation:
1 is the first value
1x3=3
3x3=9
18x3=54
Evaluate each function for the given value of x , and write the input x and output f(x) as an ordered pair.
f(x)=2 x-33 for x=9
f (9) = 15 is the output for the given input .
How can you tell whether a function is linear or not?
Looking at a function's graph will reveal if it is linear or not with the greatest ease.When a linear function is plotted on a graph, a straight line is formed. A nonlinear function is curved in some way; it does not form a straight line.f(x)= 2 x - 33
Put x = 9 ⇒ 2 × 9 - 33
⇒ 18 - 33
⇒ 15
Therefore f (9) = 15
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Write the function rule for the function shown below reflected in the given axis.
f(x) = 3x; x-axis
Let g(x) be the reflection of f(x) in the x-axis. What is the function rule for g(x)?
g(x) =
Step-by-step explanation:
so, f(x) = 3x
now, this is reflected around the x-axis.
points that were n units above the x-axis are now n units below the x-axis and vice versa.
so, the functional values start the same in their size, but their sign flips. for every point.
that means,
g(x) = -f(x) = -3x
Write the function rule for each function reflected in the given axis.
f(x) = 3 x ; y - axis
Functions can be reflected on the x-axis, the y-axis, or both axes. For example, function reflection y= f(x) can be written as y= -f(x) or y= f(-x) even y= -f(-x). There are four types of function or graph transformations: reflection, rotation, translation, and dilation. In mathematics, especially geometry, mirror or mirroring means flipping, so a function's mirroring is the mirror image of a given function or graph. Hence the reflection function is commonly known as the reflection function.
The function's reflection should be similar in size and shape to the original position.
f(x)=3x; y-axis
(consult the pictures attached below)
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3^n= 87499
What is the value of n?
power of 3 is zero
Solution:
87499
Prime Number :
A prime number is a whole number greater than 1 whose only factors are 1 and itself. An element is a real number that can be divided evenly into another number. The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. Numbers that have more than two factors are called composite numbers.
Factorization:
In mathematics, factorization or factoring consists of writing a number or another mathematical object as a product of several factors, usually smaller or simpler things of the same kind
Factorization may also refer to more general decompositions of a mathematical object into the product of smaller or simpler objects. For example, every function may be factored into the composition of a surjective function with an injective function. Matrices possess many kinds of matrix factorizations. For example, every matrix has a unique LUP factorization as a product of a lower triangular matrix L with all diagonal entries equal to one, an upper triangular matrix U, and a permutation matrix P; this is a matrix formulation of Gaussian elimination.
Factorization of the number = 87499
= 87499
= 5147*17
=5147*7*1
power of 3 is zero
5147 is the prime number
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what is the solution for w in the equation?
equation: w + 1/2 = 1/4w + 2 (the / is for fraction bar)
options:
A: w = 2
B: w = 10/3
C: w = 9/8
D: w = 4
The solution for w in the equation is w = 2. therefore, the correct option is A; w = 2
What is the solution for an equation?An equation represents equality of two or more mathematical expression.
The solution of an equation refers to the values of the variables involved in that equation which if substituted in place of those variable would give a true mathematical statement.
WE have been given the equation: w + 1/2 = 1/4w + 2
Then to solve, Subtract 1/2 from both sides of the equation.
w=1/4w+1 1/2
Then Multiply both sides by 4
4w=w+6
Now Subtract w from both sides
3w=6
Now Divide both sides by 3
w=2
Therefore, the solution for w in the equation is w = 2 , the correct option is A; w = 2
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Each sequence has eight terms. Evaluate each related series. -13,-14.5,-16, .......,-23.5
Evaluating each series of 8 terms, the result is
∑ = 42
We solve this problem by defining, succession:
What are sequences?A sequence is defined by an order of values and/or elements that have a relationship of variation as a ratio or proportion that makes them predictable.
As we can see the variation between each of the terms is:
-14.5 - (-13) = -1.5-16 - (-14) = -1.5The initial number is -13
a1 = -13
The final number is -23.5
an = -23.5
Let's determine the sum of this sequence of numbers
∑ = n(a1 + an)/2
n : number of termsa1 : first terman : last termOur values are:
-13,-14.5,-16, .......,-23.5
∑ = 8(-13 - (-23.5))/2
∑ = 42
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Solve each system by elimination.
2w+5y = -24 , 3w-5y = 14
By elimination, the solution of the system of equations, 2w + 5y = -24 and 3w - 5y = 14, is (w, y) = (-2 , -4).
A system of equations is a set of two or more equations which includes common variables. To solve system of equations, we must find the value of the unknown variables used in the equations that must satisfy all the equations.
There are three methods that can be used to solve system of equations.
1. Elimination
2. Substitution
3. Graphing
Using the elimination method, given two equations in w and y, a variable should be eliminated by adding/subtracting the two equations.
Adding the two equations will eliminate the variable y.
2w + 5y = -24 (equation 1)
3w - 5y = 14 (equation 2)
5w + 0y = -10
w = -2
Substitute the value of w to any of the two equations and solve for y.
2w + 5y = -24 (equation 1)
2(-2) + 5y = -24
5y = -24 + 4
5y = -20
y = -4
Hence, the solution of the system of equations is (w, y) = (-2 , -4).
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Determine whether each sequence is geometric. If so, find the common ratio. 2,-10,50,-250, . . . . .
The given sequence is geometric, with a common ratio of -5.
What is a geometric progression?A geometric progression, sometimes referred to as a geometric sequence in mathematics, is a series of non-zero numbers where each term following the first is obtained by multiplying the preceding one by a constant, non-zero value known as the common ratio.
Given: 2, -10, 50, -250, ....
We can observe here: [tex]\frac{-10}{2}=\frac{50}{-10}=\frac{-250}{50} = -5[/tex], hence following the condition required for a sequence to be geometric.
Hence, The given sequence is geometric, with a common ratio of -5.
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PLEASE HELP PLEASE PLEASE PLEASE!! I NEED HELP ASAP!!! Please show work for brainliest!!! :)
What is the factored form of the expression over the complex numbers? 16x^2+9y^2
Answer:
(4x+3iy)(4x−3iy)
Step-by-step explanation:
We have a^2 + b^2
Over the complex number, this is equal to
(a-bi) (a+bi)
(4x -3yi) (4x+3yi)
Write in point-slope form an equation of the line through each pair of points. (0,-1) and (3,-5)
The equation of the line in point-slope form, which passes through the pair of points located at (0 , -1) and (3 , -5), is y + 5 = -4/3(x - 3).
The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.
The standard form of an equation of a line is expressed as ax + by = c, where a and b, if all possible must be integers, are the coefficients of variable x and y, respectively, and c is a constant. Meanwhile, slope-intercept form is given by the formula y = mx + b, where m is the slope of the line and b is the y- intercept. On the other hand, given the slope m and a point on the line (x , y), we can express the equation in point-slope form, (y - y1) = m(x - x1).
Getting the slope of the two points: (0 , -1) and (3 , -5).
m = (y2 - y1)/(x2 - x1)
m = (-5 - -1)/(3 - 0)
m = -4/3
Using the point slope form, plug in the values of the slope and one point to set up the equation.
(y - y1) = m(x - x1)
where m = -4/3 and (x1 , y1) = (3 , -5)
(y - -5) = -4/3(x - 3)
y + 5 = -4/3(x - 3)
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Refer to ®F .
Is -A F ≈ -E F. Explain.
Congruent radii are found in congruent circles. Concentric circles share a common center.
What circles have congruent radii?Congruent circles contain congruent radii. Concentric circles all have the same center. A central angle has a center vertex and circle endpoints.
The distances OA and OB are both equal to the radius of the circle because all points on the circle are equidistant from O. OA = OB, to put it another way.
According to the definition of line segment congruence, segments OA and OB are congruent. This is known as the "wheel theorem," because it is responsible for the operation of wheels.
Because all points on a circle are the same distance from the center, and circle radii have one endpoint on the circle and one at the center, all circle radii are congruent by definition. Every circle has an outer diameter.
Congruent circles contain congruent radii (the plural of radius). Concentric circles all have the same center.
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3
1 point
Find the distance between the pair of points. Round to the nearest tenth, if necessary.
(-7,-8). (4,3)
Answer:
15.6
Step-by-step explanation:
Find the difference between coordinates:
(x2-x1) = (4 - -7) = 11
(y2-y1) = (3 - -8) = 11
Square the results and sum them up:
(11)2 + (11)2 = 121 + 121 = 242
Now Find the square root and that's your result:
Exact solution: √242 = 11√2
Aprox solution: 15.5563
Rounded to nearest tenth: 15.6
Anyone out there knows how to do math
Step-by-step explanation: I hope this helps.
Answer: the correct answer is 1, 2, and 5