30 POINTS AND BRAINLIEST
can someone help me i’ve been stuck on this question for hours

The value of S4 for the given expression ♾️. n-1 Σ 1/4(-1/3) is -1/12.

The given expression ♾️. n-1 Σ 1/4(-1/3) represents a summation of the term 1/4(-1/3) over a range of values from 1 to n-1, where n is an unknown value. We need to find the value of S4, which represents the sum of this expression when n is equal to 4.

To find the value of S4, we substitute n = 4 into the expression and evaluate it.

♾️. n-1 Σ 1/4(-1/3) = ♾️. 4-1 Σ 1/4(-1/3)

Simplifying, we get:

♾️. 3 Σ 1/4(-1/3)

Since the term 1/4(-1/3) is constant, we can pull it out of the summation:

1/4(-1/3) ♾️. 3

Now, ♾️. 3 represents the sum of 3 terms. Multiplying 1/4(-1/3) by 3 gives:

1/4(-1/3) * 3 = -1/4 * 1/3 * 3 = -1/12

Therefore, the value of S4 for the given expression ♾️. n-1 Σ 1/4(-1/3) is -1/12.

For more such questions on expression, click on:

https://brainly.com/question/1859113

#SPJ8

The probable question could be:

What is the value of s4 for expression ♾️. n-1 Σ 1/4(-1/3) ?

A) 1/9

B) 7/54

C) 5/27

D) 10/27

To describe the center of the data, we can use either the mean or the median.

To describe the variation of the data, we can use either the range or the interquartile range (IQR).

Looking at the dot plot, it seems that the data is somewhat skewed to the right, with a few high-priced outliers. In this case, the median and the IQR may be more appropriate measures of the center and variation, respectively, as they are less sensitive to outliers.

To find the median and IQR:

Arrange the data in order from smallest to largest.

Find the median, which is the middle value. If there are an even number of values, take the average of the two middle values.

Find the first quartile, which is the median of the lower half of the data.

Find the third quartile, which is the median of the upper half of the data.

Calculate the IQR as the difference between the third quartile and the first quartile.

Here are the steps applied to the dot plot:

We can see that the smallest value is about 20 and the largest value is about 120, giving a range of 100 dollars.

The median is approximately 60 dollars, as it is the middle value between the 11th and 12th data points when the data is arranged in order.

The first quartile is approximately 40 dollars, as it isthe median of the lower half of the data points, which are found below the median.

The third quartile is approximately 80 dollars, as it is the median of the upper half of the data points, which are found above the median.

The IQR can be calculated as the difference between the third quartile and the first quartile, which is approximately 40 dollars.

Therefore, the most appropriate measures to describe the center and the variation for this data set are the median and the interquartile range (IQR), respectively. The median is approximately 60 dollars, and the IQR is approximately 40 dollars.

Answer: 56%, 22%, 4%, 18%

Step-by-step explanation: Add the numbers up to get 100 and each number out of 100 is that percentage.

The expression that shows the formula solved for b is option D. b>√c²- a².

Relationship among the sides of an acute triangle.

There are different types of triangle in which acute triangle is one. An acute triangle is a type of triangle in which the measure of all its internal angles is less than a right angle. So that the length of its three sides are related by the formula:

a² + b² > c²

To show this formula solved for b, make b the subject of formula,

b² > c² - a²

Then find the square root of both sides of the expression to have,

b >√c²- a²

This shows the formula solved for b in terms of a and c.

Therefore, the expression that shows the formula for b in the given question is option D. b > √c²- a²

Learn more about the relations among the sides of an acute triangle at https://brainly.com/question/4578584

#SPJ1

Answer

51

Explanation

85/15=y/9

765=15y

51

Answer:

y = 51

Step-by-step explanation:

These triangles are similar, so you can set up a proportion to solve for y:

\(\frac{85}{15} =\frac{y}{9}\)

Cross multiply:

\(\frac{765}{15y}\)

Divide 765 by 15:

y = 51

To find arcsin, we need to use the identity:

sin(arcsin(x)) = x

Since arcsin is negative, sin(arcsin) is also negative. Therefore, we can say:

sin(arcsin) = -sqrt(1 - (cos)^2)

where (cos)^2 = 8/17

Substituting, we get:

sin(arcsin) = -sqrt(1 - (8/17))

Simplifying, we get:

sin(arcsin) = -sqrt(17/17 - 8/17)

Simplifying further, we get:

sin(arcsin) = -sqrt(9/17)

Therefore, arcsin = -sqrt(9/17)

To find arctan, we need to use the identity:

tan(arctan(x)) = x

Substituting, we get:

tan(arctan) = -8/17

Therefore, arctan = -8/17

So, arcsin is -sqrt(9/17) and arctan is -8/17.

Answer:

$ 1.80

Step-by-step explanation:

Answer:

1.08

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

First I would divide 15 by 3 which would get me 5 then i would multiply it by 5 to get the answer of 25.

Answer:

Step-by-step explanation:

Given:

∠C ≅ ∠E            

           Statements                          Reasons

1). ∠C ≅ ∠E                             1). Given

2). ∠ABC ≅ ∠DBE                 2). Vertically opposite angles

3). ΔABC ~ ΔDBE                  3). By AA postulate of similarity.

These pairs of sets of numbers: (a) {1, 3, 3, 3, 5, 5, 5, 5, 5},{5, 3, 1} b) {{1}},{1,{1}} ) ∅,{∅}  are  equal, not equal and not equal respectively

The given pairs of sets of numbers are

a) (1, 3, 3, 3, 5, 5, 5, 5, 5}, {5, 3, 1} b) {{1}}, {1, {1}} c) Ø, {0}​

To determine the reasons for the answers we have

(a) {1, 3, 3, 3, 5, 5, 5, 5, 5},{5, 3, 1}

All the number are distinct elements without any repetition is the same in both sets.

This implies that the sets are equal

b) {{1}},{1,{1}}

From the second set of numbers, the number of elements is not the same in both sets. The number of elements in the two sets are 1 and 2.

This therefore means that the pair of numbers are not equal

c) ∅,{∅}

In the third set of numbers, the number of elements is not the same in both sets.

The number of elements in the pairs are 0 and 1 in each of the sets . This implies that the pair of sets of numbers are not equal

In conclusion these pairs of sets of numbers: (a) {1, 3, 3, 3, 5, 5, 5, 5, 5},{5, 3, 1} b) {{1}},{1,{1}} ) ∅,{∅}  are  equal, not equal and not equal respectively

Learn more about equality of sets of numbers on https://brainly.com/question/29003828

#SPJ1

Answer:

it would become 61

Step-by-step explanation:

the tenths place (.9) is greater or equal to five. if it follows the rule, the tens place (0) would increase by one.

Answer:

4 cm

which is none of the listed answers

Step-by-step explanation:

∛64 = 4

proof:

4x4x4 = 64

Answer:

The slope is 4

Step-by-step explanation:

Given

\(y = 4x + \frac{1}{4}\)

Required

The slope

A linear function is represented as:

\(y= mx + c\)

Where

\(m \to slope\)

By comparison;

\(mx = 4x\)

\(m =4\)

Answer:

Answer:

D. (-2,-5), (0, -7), (1, -4)

Step-by-step explanation:

From Function Theory we must remember that range of a function is the set of images related to elements of the domain. In this case, we must find the image of each of the three elements that forms the domain of , which are: ,  and .

Then we proceed to find all elements of range:

Which corresponds to option D.

Step-by-step explanation:

Answer: x=36

Assuming that O is the centre of the circle,

108+a+a=180(sum of the interior angles of a triangle is 180)

2a=180-108

2a=72

a=72÷2

a=36

a=x (angles in the same segment are equal)

Therefore x=36

Step-by-step explanation:

The type of function that best represents the data shown in the table above is Linear.

The statement that is true regarding the table above is that The first differences are constant.

The type of function that best represents the data shown in the table below is a Linear function.

A linear function is a type of mathematical function that can be represented by a straight line on a graph. It has the form:

f(x) = mx + b

where "m" represents the slope of the line, and "b" represents the y-intercept, which is the point where the line crosses the y-axis.

In this case the linear function is exhibited.

Learn more about functions on;

https://brainly.com/question/4025726

#SPJ1

Answer:

Convenience sampling.

Step-by-step explanation:

In Statistics, sampling can be defined as a process used to collect or select data (objects, observations, or individuals) from a larger statistical population using specific procedures.

There are various types of sampling used by researchers and these are;

1. Random sampling.

2. Systematic sampling.

3. Stratified sampling.

4. Cluster sampling.

5. Quota sampling.

6. Convenience (opportunity) sampling.

Convenience sample can be defined as a sampling technique in which the representatives to be used are easily accessible. For example, a researcher using a social media poll such as Twitter polls.

In this scenario, Catherine Chao, Director of Marketing Research, chooses thirty-six of her closest friends to participate in the testing of a new toothpaste package. Thus, Catherine's sample is a convenience sampling.

Answer:

A.

Step-by-step explanation:

The vertical line test is a way of finding out if a relation is a function.

Graph the relation.

Then imagine a vertical line moving from left to right over the graph of the relation.

If the vertical line intersects at most one point of the graph in any position you place the vertical line, then the relation is a function.

This function passes the vertical test since it never intersects more than one point on the vertical line at a time.

Answer: A.

Thus, the height of the cylinder for the given volume and radius is found to be 10 ft.

Objects in three dimensions are represented by solid shapes. Search the area! Solid shapes include any other three-dimensional object, such as a laptop, phone, ice cream cone, balls, etc.

On a three-dimensional plane, a cylinder is a solid shape. It maintains a set spacing between two circular, parallel bases that are connected by a curved surface (like a tube).

Given that:

The formula for the volume of cylinder V:

V = πr²h

Put the values:

502 = 3.14*4²*h

502 = 3.14*16*h

h = 502 / 50.2

h = 10 ft

Thus, the height of the cylinder for the given volume and radius is found to be 10 ft.

Know more about the solid cylinder:

https://brainly.com/question/18801887

#SPJ1

Complete question:

Find the missing dimension of the given solid.

The figure is attached.

Answer:

\(y = \frac{1}{2} x + 7\)

Step-by-step explanation:

Slope-intercept form is written as y = mx + b. So, the y must be isolated. Therefore, to answer this question, isolate the y in 2y - x = 14.

1) Move the x to the other side.

\(2y - x = 14\\2y =x+14\)

2) Divide all terms by 2 to finally isolate x.

\(2y = x + 14\\\frac{2}{2}y= \frac{x}{2} + \frac{14}{2} \\y = \frac{1}{2} x + 7\)

3) Therefore, \(y = \frac{1}{2} x + 7\) must be the answer.

Answer:

648

Step-by-step explanation:

It will round down (since 4 and down round down) to 600. Therefore, the answer is 648.

Hope that helps!

-Sabrina

Answer:

648

Step-by-step explanation:

Answer: \(m\angle DE F=90^{\circ}\)

Step-by-step explanation:

The slope of \(DE\) is \(\frac{7-3}{5-4}=4\).

The slope of \(EF\) is \(\frac{3-2}{4-8}=-\frac{1}{4}\).

Thus, \(DE \perp EF\), meaning \(m\angle DE F=90^{\circ}\).

The component form of the following vectors is Option A. V = (38.3, 32.1).

To find the component form of a vector given its magnitude and direction angle, we can use trigonometry.

The component form of a vector in two dimensions is represented as (x, y), where x is the horizontal component and y is the vertical component.

In this case, the magnitude of the vector is given as 50, and the direction angle θ is 50°. We can use this information to calculate the horizontal and vertical components.

The horizontal component (x) can be found using the formula x = magnitude * cos(θ), and the vertical component (y) can be found using y = magnitude * sin(θ).

Let's calculate the components:

x = 50 * cos(50°) ≈ 38.3

y = 50 * sin(50°) ≈ 32.1

Rounding the answers to the nearest tenth, we get the component form of the vector V as (38.3, 32.1).

Therefore, the correct answer is A. V = (38.3, 32.1).

Know more about the vectors here:
https://brainly.com/question/30854499

#SPJ8

The question is incomplete. Find the full content below:

Find the component form of the following vectors. Round your answers to the tenth.

Magnitude of v = 50, direction angle θ = 50°

A. V = (38.3, 32.1)

B. V = (33.8, 31.2)

C. V = (32.1, 38.3)

D. V = (31.2, 33.8)

Answer:

She didn't get as much money that she hoped for

Step-by-step explanation:

Answer:

A. 5/6 B. 5/6 C. 1/4 D. 1/24

Step-by-step explanation:

A. 12+3= 15 = 5

— — —

18. 18. 6

B. 4+6=10= 5

— — —

12. 12. 6

C. 4-2=2 = 1

— — —

8. 8. 4

D. 9-8 = 1

— —

24. 24

Answer:

The length of the hypotenuse is 100.

Step-by-step explanation:

To find the length of the hypotenuse, we use the following formula:

c=\(\sqrt{a^2+b^2}\)

c=\(\sqrt{28^2+96^2}\)

c=\(\sqrt{10,000}\)

c=100

Therefore, the length of the hypotenuse is 100.

Roland's percent error is approximately 3.889%.

This means that his measured value differs from the actual value by 3.889% or 0.03889 in decimal form.

The positive sign indicates that Roland's measured value is slightly lower than the actual value.

To calculate Roland's percent error, we can use the formula:

Percent Error = (|Measured Value - Actual Value| / Actual Value) \(\times\) 100

Given that Roland measured a current of 0.173 amps while expecting a current of 0.180 amps, we can substitute these values into the formula:

Percent Error = (|0.173 - 0.180| / 0.180) \(\times\) 100

Simplifying the expression within the absolute value:

Percent Error = (|-0.007| / 0.180) \(\times\) 100

Since the absolute value of -0.007 is 0.007, we have:

Percent Error = (0.007 / 0.180) \(\times\) 100

Calculating the division:

Percent Error = 0.03889 \(\times\) 100

Percent Error = 3.889%.

For similar question on percent error.

https://brainly.com/question/28771966

#SPJ8