Answer:
7th term.
Step-by-step explanation:
The given series is
\(\log 3+\log 9+\log 27+\log 81+...\)
We need to find the number of term log 2187.
Here, terms inside the log are 3, 9, 27, 81, ... are in G.P.
First term = 3
Common ratio \(=\dfrac{9}{3}=3\)
nth term of a G.P. is
\(a_n=ar^{n-1}\)
where, a is first term and r is common ratio.
\(2187=3(3)^{n-1}\)
Divide both sides by 3.
\(729=(3)^{n-1}\)
\(3^6=(3)^{n-1}\)
On comparing both sides, we get
\(n-1=6\)
\(n=7\)
Since 7th term of the G.P. 3, 9, 27, 81, ... is 2187, therefore, 7th term of \(\log 3+\log 9+\log 27+\log 81+...\) is log 2187.
Find the exact length of the midsegment of trapezoid JKLM with verticesJ(6, 10), K(10, 6), L(8, 2), and M(2, 2).The length of the midsegment is
The midsegment is equal to the average of the lengths of the bases, so:
\(M=\frac{JM+KL}{2}\)Where:
\(\begin{gathered} JM=\sqrt[]{(6-2)^2+(10-2)^2} \\ JM=\sqrt[]{80}=4\sqrt[]{5}\approx8.9 \end{gathered}\)and
\(\begin{gathered} KL=\sqrt[]{(10-8)^2+(6-2)^2} \\ KL=\sqrt[]{20}=2\sqrt[]{5}\approx4.47 \end{gathered}\)Therefore:
\(M=\frac{4\sqrt[]{5}+2\sqrt[]{5}}{2}=3\sqrt[]{5}\)What is the average of the expressions 2x+5, 5x-6, and -4x+2
Answer:
x+1/3
Step-by-step explanation:
Add the terms together (3x+1), then divide by how many terms there are (3), to get the average of the expressions
what are real nimbers? please I need an accurate answer
Answer:
a real number is a value of a continuous quantity that can represent a distance along a line
Step-by-step explanation:
GEOMETRY QUESTIONS PLEASE HELP ASAP, Thank you!!!
Answer: 6
Step-by-step explanation:
You can find the scale factor by comparing a side that is similar from each
AB is similar to PQ
2.4/2 = 1.2
Your scale factor is 1.2. So each of the sides was multiplied by 1.2
EDx1.2 = x
x= 5(1.2)
x= 6
how to find the magnitude and direction of a vector using trig?
To find the magnitude and direction of a vector using trigonometry, you can follow these steps:
1. Identify the components of the vector: A vector can be represented by its horizontal (x) and vertical (y) components. For example, if we have a vector A with components Ax and Ay, we can express it as A = (Ax, Ay).
2. Calculate the magnitude of the vector: The magnitude of a vector is the length of the vector. To find the magnitude of a vector A, you can use the Pythagorean theorem. The formula is:
magnitude(A) = √(Ax^2 + Ay^2)
3. Find the direction of the vector: The direction of a vector can be given in different forms, such as angles or degrees. Two common ways to express the direction of a vector are:
a. Angle with the positive x-axis: This angle is measured counterclockwise from the positive x-axis to the vector. You can use trigonometric functions to find this angle. The formula is:
angle = arctan(Ay / Ax)
b. Angle with the positive y-axis: This angle is measured counterclockwise from the positive y-axis to the vector. To find this angle, you can subtract the angle obtained in step 3a from 90 degrees (or π/2 radians).
4. Convert the direction to degrees or radians, depending on the required format.
Let's consider an example to illustrate these steps:
Suppose we have a vector A with components Ax = 3 and Ay = 4.
1. Identify the components: A = (3, 4).
2. Calculate the magnitude:
magnitude(A) = √(3^2 + 4^2) = √(9 + 16) = √25 = 5.
3. Find the direction:
angle = arctan(4 / 3) ≈ 53.13 degrees.
4. Convert the direction:
angle with positive y-axis = 90 degrees - 53.13 degrees ≈ 36.87 degrees.
So, the magnitude of vector A is 5, and its direction is approximately 36.87 degrees with a positive y-axis.
Remember, trigonometry can be used to find the magnitude and direction of a vector when you have its components.
to know more about magnitude and direction here:
brainly.com/question/1447482
#SPJ11
POSTING THIS AGAIN PLEASE I NEED HELP I CAN'T FAIL THIS TEST
1) Which set of equations shows a way to find 729 : 9? 721 : 7 = 103 8: 2 - 4 . 729 : 3 = 243 729 ; 3= 243 So, 729 : 9 = 103 + 4 So, 729 : 9 = 243 + 243 720 : 9 = 80 9 : 9 = 1 72 :9= 8 9:9=1 So, 729 : 9 = 80 +1 So, 729=9= 8+1
Answer:
729 : 9 = 80 +1 is correct
Classify the following polynomials by the highest power of each of its terms. Combine any like terms first. -x^2+x-x^2+1,x^2+x+2x^3-x,4x+x+x-2,3x^2+4-3x^2-1
Polynomials are algebraic expressions consisting of terms that include real numbers, variables, and positive integer exponents. Each term in a polynomial has a variable raised to a non-negative integer power, and the coefficient of each term is a real number. Polynomials are classified by the degree of their highest power. If two or more terms in a polynomial have the same variable raised to the same power, they can be combined into a single term.
1. -x² + x - x² + 1
Combine like terms: -x² + x - x² + 1 = -2x² + x + 1
This polynomial has degree 2 because the highest power of the variable is 2.
2. x² + x + 2x³ - x
Rearrange terms: 2x³ + x² + x - x = 2x³ + x²
This polynomial has degree 3 because the highest power of the variable is 3.
3. 4x + x + x - 2
Combine like terms: 4x + x + x - 2 = 6x - 2
This polynomial has degree 1 because the highest power of the variable is 1.
4. 3x² + 4 - 3x² - 1
Combine like terms: 3x² - 3x² + 4 - 1 = 3
This polynomial has degree 0 because there is no variable term.
Therefore, the four given polynomials have degrees 2, 3, 1, and 0, respectively.
For such more question on variable
https://brainly.com/question/28248724
#SPJ8
Find the value of a to the nearest tenth.
Hello
See attachment.
1. Pythagore :CB² = AC² + AB²
CB² = 6² + 5²
CB² = 61
CB = √61ù
2. Pythagore :CB = DE = √61
CE² = CD² + DE²
DC² = CE² - DE²
DC² = 8² - (√61)²
DC² = 64 - 61
DC² = 3
DC = √3
3. Conclusionx = √3
2x-7=-3x+18
solve for x
Answer:
x=5
Step-by-step explanation:
2x−7=−3x+18
Step 1: Add 3x to both sides.
2x−7+3x=−3x+18+3x
5x−7=18
Step 2: Add 7 to both sides.
5x−7+7=18+7
5x=25
Step 3: Divide both sides by 5.
5x
5
=
25
5
x=5
Answer:
x = 5
Step-by-step explanation:
2x - 7 = -3x + 18
2x - 7 + 7 = -3x + 18 + 7
2x = -3x + 25
2x + 3x = -3x + 25 + 3x
5x = 25
x = 5
3. a. Given parallelogram ABCS, what are m is congruent to A and m is congruent to C?
The required measures of the angles of parallelogram ABCD as are follows m∠A = 66°, m∠B = 114°, and m∠C = 66°.
What is Parallelogram?A parallelogram is defined as a special type of quadrilateral that has both pairs of opposite sides parallel and equal.
Given parallelogram ABCD,
m∠D = 114°
In a parallelogram, the opposite angles are congruent, so m∠A is congruent to m∠C. This means that m∠A and m∠C have the same measure.
If m∠D = 114°, then m∠A must be equal to 180° - 114° = 66°, since the measures of the adjacent angles of a parallelogram add up to 180°.
So, m∠A = m∠C = 66°
So, m∠B = 114°
Learn more about parallelograms here:
brainly.com/question/11220936
#SPJ1
$100 for 4 tickets. what is the cost per one ticket? Plsss help me
Answer:25. Do better bro that’s sad
Step-by-step explanation:
Answer:
One ticket is 25 dollars
Step-by-step explanation:
Let T be tickets
$100 = 4T
\(\frac{100}{4} = \frac{4}{4}T\)
$25 = T
Therefore, one ticket is equal to 25 dollars
14.
If we flip a coin eight times, how many possible sequences of eight coin faces (i.e., heads or tails) can we have?
1,024
512
256
2,048
Using the Fundamental Counting Theorem, the number of possible sequences of eight coin faces is of 256.
What is the Fundamental Counting Theorem?It is a theorem that states that if there are n things, each with \(n_1, n_2, \cdots, n_n\) ways to be done, each thing independent of the other, the number of ways they can be done is:
\(N = n_1 \times n_2 \times \cdots \times n_n\)
In this problem, there are 8 events, each with 2 possible outcomes, hence:
\(n_1 = n_2 = \cdots = n_8 = 2\)
Hence, the total number of sequences is given by:
\(N = 2^8 = 256\).
More can be learned about the Fundamental Counting Theorem at https://brainly.com/question/24314866
#SPJ1
Answer:
C) 256
Step-by-step explanation:
Essentially, each coin flip is a decision, and heads or tails is the choice offered. Therefore, we calculate that there are 28 possible sequences, or 256.
Took the quiz ;)
The area of a square floor on a scale drawing is 100 square centimeters, and the scale drawing is 1 centimeter:3 ft. What is the area of the actual floor? What is the ratio of the area in the drawing to the actual area?
Answer:
900 ft
Step-by-step explanation:
I if 1 centimeter equals 3 ft and the dimensions are 10 cm by 10 cm then the real dimensions are 30 ft by 30 ft and that is 900 ft.
what is 55/63 in simplest form
55/63 is already in its simplified form.
To simplify 55/63, we can divide both the numerator and denominator by their greatest common factor (GCF). To find the GCF of 55 and 63, we can use prime factorization:
55 = 5 × 11
63 = 3 × 3 × 7
The common factors of 55 and 63 are 1, so the GCF is 1. We can divide both the numerator and denominator by 1:
55/1/63/1
Therefore, 55/63 in simplest form is 55/63.
Learn more about Simplification here:
https://brainly.com/question/28996879
#SPJ
31. A power line is connecting the top of a building to the ground 160 meters away from the
base of the building. At what angle is the wire connected at the building (building and wire
angle), if the wire is 240 meters long?
Round to the nearest degree
The angle of depression of the power line making with ground and connected to the top of building is 48.18°.
Given, A power line is connecting the top of a building to the ground 160 meters away from the base of the building.
we are asked to determine at what angle is the wire connected at the building (building and wire angle), if the wire is 240 meters long.
The length of the wire connected to the top of building = h = 240 meters
The distance of the power line away from base of building = x = 160 meters
Let The angle of depression = Ф
now, cos angle = base/hypotenuse
cosФ = OA/Ob
or cosФ = x/h
or cosФ = 160/240
or cosФ = 2/3
therefore, Ф = cos⁻¹(2/3)
so, Ф = 48.18°
So the angle of depression from the ground = Ф = 48.18°
Learn more about Angle of depression here:
brainly.com/question/17193804
#SPJ9
7k^2+9k=0 quadratic equation
Answer:
k = 0
k = - \(\frac{9}{7}\)
Step-by-step Explanation
Quadratic Equation:
7\(k^{2}\)=9k = 0
a = 7
b = 9
c = 0
k = \(\frac{-9+-\sqrt{9^{2}-4x7x0 } }{2x7}\)
Simplify:
k = \(\frac{-9+-9}{14}\)
Separate Equations:
k = \(\frac{-9+9}{14}\)
k = \(\frac{-9-9}{14}\)
Solve:
k = 0
k = - \(\frac{9}{7}\)
How to find the frequency in a histogram
Answer:Para preparar la tabla de frecuencia para un histograma, es necesario primero establecer el número de intervalos que se desea tener.
Luego, se debe determinar el ancho común de los intervalos (interval width). Para esto, se calcula la diferencia del dato mayor y el dato menor, y se divide entre el número de intervalos deseados. Este resultado se redondea al entero mayor más cercano.
Por ejemplo, si se desea tener 10 intervalos y encontramos que el dato mayor es 35 y el menor es 12,
Step-by-step explanation:
1.Below are the scores from team Mexico in the women’s swim team competition. Mexico received a score from seven judges in different countries. Their overall score is an average of the seven scores. What is team Mexico’s overall score?
A)What was Mexico’s total scores?
B. What was the overall average of their scores?
Answer:
Mexico's total score was 49
The overall average was 7
Step-by-step explanation:
7.5+6.4+9.1+5.4+5.4+6.2+9.0=49
49/7=7
Find the first three nonzero terms of the Maclaurin series for the function and the values of x for which the series converges absolutely. f(x)=(3cosx)ln(1+x) What are the first three nonzero terms of the Maclaurin series for f(x) ? (
The Maclaurin series for f(x) converges absolutely for x within the interval (-2/3, 2/3).
To find the Maclaurin series for the function f(x) = (3cos(x))ln(1+x), we can use the standard formulas for the Maclaurin series expansion of elementary functions.
First, let's find the derivatives of f(x) up to the third order:
f(x) = (3cos(x))ln(1+x)
f'(x) = -3sin(x)ln(1+x) + (3cos(x))/(1+x)
f''(x) = -3cos(x)ln(1+x) - (6sin(x))/(1+x) + (3sin(x))/(1+x)² - (3cos(x))/(1+x)²
f'''(x) = 3sin(x)ln(1+x) - (9cos(x))/(1+x) + (18sin(x))/(1+x)² - (12sin(x))/(1+x)³ + (12cos(x))/(1+x)² - (3cos(x))/(1+x)³
Next, we evaluate these derivatives at x = 0 to find the coefficients of the Maclaurin series:
f(0) = (3cos(0))ln(1+0) = 0
f'(0) = -3sin(0)ln(1+0) + (3cos(0))/(1+0) = 3
f''(0) = -3cos(0)ln(1+0) - (6sin(0))/(1+0) + (3sin(0))/(1+0)² - (3cos(0))/(1+0)² = -3
f'''(0) = 3sin(0)ln(1+0) - (9cos(0))/(1+0) + (18sin(0))/(1+0)² - (12sin(0))/(1+0)³ + (12cos(0))/(1+0)² - (3cos(0))/(1+0)³ = -9
Now we can write the first three nonzero terms of the Maclaurin series:
f(x) = f(0) + f'(0)x + (f''(0)/2!)x² + (f'''(0)/3!)x³ + ...
f(x) = 0 + 3x - (3/2)x² - (9/6)x³ + ...
Simplifying, we have:
f(x) = 3x - (3/2)x² - (3/2)x³ + ...
To determine the values of x for which the series converges absolutely, we need to find the interval of convergence. In this case, we can use the ratio test:
Let aₙ be the nth term of the series.
|r| = lim(n->infinity) |a_(n+1)/aₙ|
= lim(n->infinity) |(3/2)(xⁿ+1)/(xⁿ)|
= lim(n->infinity) |(3/2)x|
For the series to converge absolutely, we need |r| < 1:
|(3/2)x| < 1
|x| < 2/3
To know more about Maclaurin series:
https://brainly.com/question/31745715
#SPJ4
The product of 12 and C is 36 in algebraic form
Answer:
Step-by-step explanation:
12C = 36
What is the magnitude of ?
V
(9,-4)
Answer:
The magnitude is sqrt((-4)^2 + (-9)^2) = 9.85. The angle is atan(-9/-4) = 180 deg + 66 deg = 246 deg = -114 deg.
Step-by-step explanation:
hope it help
Answer:
9.85
Step-by-step explanation:
|v|= √9²+(-4)²
=√81+16
=√97
|v|= 9.85
M is the midpoint. Find the value of X.
We have: SM = TM ( because M is the midpoint )
So: x + 12 = 8x - 2
=> x - 8x = -2 - 12
=> -7x = -14
=> x = (-14) / (-7) = 2
Answer: x = 2
Ok done. Thank to me :>
4.
—-
——
help please
math geniuses pls help!!!
pls check other questions too!
Answer:
Always in the range zero to one
Step-by-step explanation:
Option c is the answer
Solve for a ordered pair
The tangent point of line 2x+3y=-20 is (-7, -1).
How to determine tangent point?To find the point of tangency, determine the intersection point of the line 2x + 3y = -20 and the circle centered at (-3, 4).
The point of tangency will lie on the line that is perpendicular to the tangent line and passes through the center of the circle.
The slope of the given line is -2/3, so the slope of the line that is perpendicular to it is 3/2:
y - 4 = (3/2)(x + 3)
y - 4 = (3/2)x + 9/2
y = (3/2)x + 17/2
Substitute this expression for y into the equation of the tangent line and solve for x:
2x + 3y = -20
2x + 3[(3/2)x + 17/2] = -20
2x + (9/2)x + 51/2 = -20
(13/2)x = -91/2
x = -7
Substituting this value of x into the equation of the line:
y = (3/2)x + 17/2 = (3/2)(-7) + 17/2 = -1
Therefore, the point of tangency is (-7, -1).
Find out more on tangent point here: https://brainly.com/question/4470346
#SPJ1
Using laws of logarithms, write the expression below using sums and/or differences of logarithmic expressions which do not contain the logarithms of products, quotients, or powers. help (x – 4)^38 In (3x – 8)^34 (logarithms) Hint: vu? = (ul. (b) Use your answer from part to evaluate the derivative. d/dx In (x – 4)^38 (3x – 8)^34 = help 100 (formulas)
Using the laws of logarithms, we can write:
ln[(x – 4)^38 (3x – 8)^34] = 38 ln(x – 4) + 34 ln(3x – 8)
This expression is now a sum of two logarithmic expressions which do not contain the logarithms of products, quotients, or powers.
To evaluate the derivative of ln[(x – 4)^38 (3x – 8)^34], we can use the chain rule and the fact that the derivative of ln(u) is du/u. Therefore:
d/dx ln[(x – 4)^38 (3x – 8)^34]
= d/dx [38 ln(x – 4) + 34 ln(3x – 8)]
= 38 d/dx ln(x – 4) + 34 d/dx ln(3x – 8)
= 38 * 1/(x - 4) + 34 * 3/(3x - 8)
= 38/(x - 4) + 102/(3x - 8)
= 100(3x - 32)/(x - 4)(3x - 8)
Therefore, the derivative of ln[(x – 4)^38 (3x – 8)^34] is 100(3x - 32)/(x - 4)(3x - 8).
For more questions like logarithms, visit the link below:
https://brainly.com/question/29087402
#SPJ11
the base of a triangle is shrinking at a rate of 2 cm/min and the height of the triangle is increasing at a rate of 3 cm/min. find the rate (in cm2/min) at which the area of the triangle changes when the height is 38 cm and the base is 32 cm.
When the height is 38 cm and the base is 32 cm, the rate at which the area of the triangle changes is 10 cm²/min.
The rate at which the area of a triangle changes can be found by multiplying the rate at which the base is shrinking by the rate at which the height is increasing.
Given:
Rate of shrinking of the base = -2 cm/min
Rate of increasing of the height = 3 cm/min
Height of the triangle = 38 cm
Base of the triangle = 32 cm
To find the rate at which the area of the triangle changes, we use the formula for the area of a triangle:
Area = (1/2) * base * height
Differentiating the area formula with respect to time gives us:
dA/dt = (1/2) * (db/dt) * height + (1/2) * base * (dh/dt)
Substituting the given values, we have:
dA/dt = (1/2) * (-2) * 38 + (1/2) * 32 * 3
Simplifying, we get:
dA/dt = -38 + 48
dA/dt = 10 cm²/min
Therefore, when the height is 38 cm and the base is 32 cm, the rate at which the area of the triangle changes is 10 cm²/min.
To know more about triangle refer here:
https://brainly.com/question/2773823
#SPJ11
Rewrite the fraction in the sentence below as a percentage.
At a certain wedding 11/20, of the guests were over 25 years old.
What is the Percent notation: %?
The percent notation is 55%.
What is the percent notation?Percentage is the fraction of an amount that is usually expressed as a number out of hundred. Percentage is a measure of frequency. The sign that is used to represent percentage is %. In order to convert a fraction to percentage notation, multiply by 100.
Percent notation = fraction that attended the wedding x 100
= 11/20 x 100 = 55%
To learn more about percentages, please check: https://brainly.com/question/25764815
#SPJ1
plot four different points whose -coordinates are half their -coordinates. do these points lie on a line?
The four points with y-coordinates half their x-coordinates are (0,0), (2,1), (4,2), and (6,3). These points do lie on a line, as they all satisfy the linear equation y = x/2.
To plot four points whose y-coordinates are half their x-coordinates, we can choose any four values of x and then compute the corresponding values of y using the equation y = x/2. For example
If x = 0, then y = 0/2 = 0, so the first point is (0,0).
If x = 2, then y = 2/2 = 1, so the second point is (2,1).
If x = 4, then y = 4/2 = 2, so the third point is (4,2).
If x = 6, then y = 6/2 = 3, so the fourth point is (6,3).
We can plot these points on a coordinate plane
As we can see from the plot, the four points do lie on a straight line. This is because the equation y = x/2 is the equation of a linear function with slope 1/2 and y-intercept 0. Therefore, any two points on this line will have a constant slope between them, and thus the four points will be collinear.
Learn more about coordinates plane here
brainly.com/question/24134413
#SPJ4
PLEASE HURRY, ME AND MY FRIEND NEED HELP WITH THIS QUESTION
Terri has a balance of $795 on his credit card. He is currently making monthly credit card payments of $20 a month. What will happen if he increases the amount he is paying by $18 a month?
A. It will take him less time to repay the loan
B. The interest rate will increase
C. It will take him longer to repay the loan
D. The interest rate will decrease
Answer: A
Step-by-step explanation:
If he increases the amount then the less time it will take to pay the loan
I GIVE BRAINLIST !!
Which point is in the graphed solution set of this system of inequalities
-3x+y>1
y>_ x-1
Answer:
I think the answer is option d