What is the common ratio in the sequence -27, 9, -3, 1....?

A. 3

B. -3

C. 1/3

D. -1/3

Answers

Answer 1
the answer would be 3.hope that helped
Answer 2
find the common ratio, u divide the second term by the first term
9/-27 = -1/3

to find the next term in a geometric sequence, u multiply by the common ratio....
-27 * -1/3 = -27/3 = 9
9 * -1/3 = -9/3 = -3
-3 * -1/3 = -3/-3 = 1



Related Questions

How many cubic feet of space is there in a warehouse that is 610 feet wide by 140 feet deep and has an 18 foot ceiling?

Answers

To solve:
Find the volume by multiplying the length, width, and height together.

(610)(140)(18)=1537200

Answer: 1,537,200 ft^3

Final answer:

The warehouse has a volume of 252,000 cubic feet, calculated using the corrected dimensions of 140 feet in length, 100 feet in width, and an 18-foot ceiling.

Explanation:

To calculate the volume of a warehouse, we use the formula for the volume of a rectangular prism, which is length × width × height. However, the question contains a typo about the width of the warehouse.

We are informed that the correct width is 100 feet, not 610 feet.

Given the corrected dimensions (140 feet by 100 feet with an 18 foot ceiling), we can now calculate the volume of the warehouse.

Volume = length × width × height
= 140 feet × 100 feet × 18 feet
= 252,000 cubic feet.

Therefore, the warehouse has a volume of 252,000 cubic feet of space.

In science class, Savannah measures the temperature of a liquid to be 50∘ Celsius. Her teacher wants her to convert the temperature to degrees Fahrenheit. What is the temperature of Savannah's liquid to the nearest degree Fahrenheit

Answers

Final answer:

To convert the temperature of Savannah's liquid from Celsius to Fahrenheit, use the equation °F = (°C × 9/5) + 32. Savannah's temperature in Celsius is 50°, so her temperature in Fahrenheit is 122°F.

Explanation:

To convert the temperature from Celsius to Fahrenheit, you can use the equation:
°F = (°C × 9/5) + 32.
In this case, Savannah's temperature in Celsius is 50°. Using the equation, we can calculate her temperature in Fahrenheit as:
°F = (50 × 9/5) + 32 = 122°F.
Therefore, the temperature of Savannah's liquid to the nearest degree Fahrenheit is 122°F.

Final answer:

Savannah's liquid, initially measured at 50°C, converts to 122°F using the formula F = C x (9/5) + 32.

Explanation:Converting Celsius to Fahrenheit

To convert the temperature from degrees Celsius to degrees Fahrenheit, we use the conversion formula: F = \( C \times \frac{9}{5} + 32 \), where F is the temperature in degrees Fahrenheit and C is the temperature in degrees Celsius.

In Savannah's case, she measured the temperature as 50°C. Applying the conversion formula:

First, multiply the Celsius temperature by \( \frac{9}{5} \)50 \times \frac{9}{5} = 90Then, add 32 to this result to find the Fahrenheit temperature.90 + 32 = 122

Therefore, the temperature of Savannah's liquid to the nearest degree Fahrenheit is 122°F.

You are required to take five​ courses, one each in​ humanities, sociology,​ science, math, and music. you have a choice of 2 humanities​ courses, 2 sociology​ courses, 6 science​ courses, 6 math​ courses, and 8 music courses. how many different sets of five courses are​ possible?

Answers

Final answer:

By multiplying the course options together for Humanities, Sociology, Science, Math and Music (2*2*6*6*8), we found that there are a total of 576 different sets of five courses.

Explanation:

To answer this question, we have to calculate the number of different sets of five courses. This can be done by multiplying the number of choices available for each requirement. So, if you have 2 humanities​ courses, 2 sociology​ courses, 6 science​ courses, 6 math​ courses, and 8 music courses to decide from, the calculation would be as follows:

We then multiply these options together (2*2*6*6*8) to get the total number of different sets of courses possible, which is 576.

Learn more about Course Combination here:

https://brainly.com/question/39300279

#SPJ12

To find the total number of different sets of five courses, multiply the number of choices for each course category: 2 (Humanities) × 2 (Sociology) × 6 (Science) × 6 (Math) × 8 (Music). This results in 1152 different sets of five courses.

To determine the number of different sets of five courses possible, we need to consider the choices available for each category:

- Humanities: 2 choices

- Sociology: 2 choices

- Science: 6 choices

- Math: 6 choices

- Music: 8 choices

The total number of different sets of five courses can be found by multiplying the number of choices in each category together. Here is the calculation:

2 × 2 × 6 × 6 × 8

Let's calculate this step-by-step:

1. 2 × 2 = 4

2. 4 × 6 = 24

3. 24 × 6 = 144

4. 144 × 8 = 1152

Therefore, the number of different sets of five courses possible is: 1152

PLEASE HELP 50 POINTS
A sports club rewards teams based on overall points earned in a season. The data for points are shown in the table, where Low represents the fewest points scored and High represents the highest points scored by a single team member.


Team Low High Range Mean Median IQR σ
Team A 22 58 36 42.1 44 18.25 10.35
Team B 38 49 11 43.9 44.5 3.5 2.97
Team C 27 36 9 31.8 32 3.75 2.55


Part A: If the club wants to award the team that has the most consistent scoring among its team members, which team should it choose and why? Justify your answer mathematically. (5 points)

Part B: If the club wants to award the team with the highest average score, which team should it choose and why? Justify your answer mathematically. (5 points)

Answers

Part A: Team C should be chosen if the club wants to award the team that has the most consistent scoring among its team members
Part B: Team B should be chosen if the club wants to award the team w/ the highest average score
hope this helps:)
please mark thanks and brainliest:)
Part A: Team A, because they constantly win and have the most wins.

Part B: Team A, because they have the highest median.

Your welcome:)

if it was wrong I am sorry:(

What equation results from completing the square and then factoring? x2 + 6x = 13

Answers

Step 1: Subtract 13 from both sides.
x^2+6x−13=13−13x^2+6x−13=0
Step 2: Use quadratic formula with a=1, b=6, c=-13.
x=−b±√b2−4ac2ax=−(6)±√(6)2−4(1)(−13)2(1)
x=−6±√882
x=−3+√22 or x=−3−√22
Answer would be 
x=−3+√22 or x=−3−√22

To the nearest degree what is the measure of each exterior angle of a regular hexagon ?

a.60°
b.45°
c.30°
d.51°

Answers

This is the concept of geometry, the total sum of angles in a hexagon is given by:
(n-2)*180
=(6-2)*180
=720
the size of each interior angle will be:
120°
N/B
the exterior and interior angles are supplementary to each other.
Therefore the size of the exterior angle will be:
180-120
=60°
the answer is A

Answer:

A


Step-by-step explanation:

The sum of measures of all the exterior angles of ANY POLYGON is 360°.

The measure of each exterior angle of ANY POLYGON is [tex]\frac{360}{n}[/tex]

where [tex]n[/tex] is the number of sides of the polygon


A hexagon has 6 sides, thus the measure of each exterior angle of a hexagon is:

[tex]\frac{360}{6}=60[/tex] degrees

Answer choice A is correct.

Determine the factors of 15x2 + 3xy + 10x + 2y. (4 points)


(3x + 2)(5x + y)
(5x + y)(2x + 3)
(3x + y)(5x + 2)
(5x + 3)(2x + y)

Answers

We have to determine the factors of:
15 x² + 3 x y + 10 x + 2 y =
= 3 x · ( 5 x + y ) + 2 · ( 5 x + y ) =
= ( 5 x + y ) ( 3 x + 2 ) = ( 3 x + 2 ) ( 5 x + y )
Answer:
A )  ( 3 x + 2 ) ( 5 x + y )

Answer:

the answer is the first option : A

Step-by-step explanation:

What reference angle in the first quadrant corresponds to theta = -120? Answer in radians.

Answers

To draw theta=-120° in the unit circle, we move clockwise 90°, then another 30°.

This means that we pass the fourth quadrant and stop in the third quadrant.

The reference angle of an angle theta in the third quadrant, is theta + 180°.

So the reference angle of -120° is -120°+180°=60°.


         360° are 2π Radians
then  60° are 1/6 of 2π Radians = π/3 Radians


Answer: Reference angle is π/3 Radians

Answer:

Answer: Reference angle is π/3 Radians

Step-by-step explanation:

Express the number as a ratio of integers. 7.5336

Answers

75336 /  10000

division gives you 7.5336

WILL GIVE BRAINLIEST PLEASE HELP!!

What is the fifth term of the recursive formula an=2an-1 with the first term of 3?

A.
7
B.
17
C.
33
D.
65

Answers

Hi.

Your answer is going to be

C.) 33

Hope this helps! :)

How many square meters are in 350 square centimeters?

Answers

There are 3.5 square meters in 350 square centimeters. A way to help remember this is that the prefix "centi" means one hundred, and there are a hundred centimeters in one meter. Hope this helps:)

~Ash
Final answer:

To convert 350 square centimeters to square meters, divide by the conversion factor that 1 square meter equals 10,000 square centimeters, resulting in 0.035 square meters.

Explanation:

To convert 350 square centimeters to square meters, we should remember that 1 square meter is equal to 10,000 square centimeters because 1 meter is equal to 100 centimeters and for area, we need to square that conversion (100 cm × 100 cm).

We start with the given quantity of 350 square centimeters. Then, we use the conversion factor 1 square meter is 10,000 square centimeters to perform the calculation, which gives us:

350 cm² × (1 m² / 10,000 cm²) = 0.035 m².

Therefore, 350 square centimeters is equal to 0.035 square meters.

Use the equation and type the ordered-pairs.

y = log 3 x

{(1/3,____,)(1,___), (3,___),(9,____),(27,____),(81,___)}

Answers

I don't know if the equation is log of 3 x or natural log( log of 10) so I'll just assume that it is log of 3


-1,0,1,2,3,4 is the answer for y according to order

Answer:

[tex]{(1/3, 0) , ( 1, 0.477), (3, 0.954), (9, 1.43), (27, 1.90), (81, 2.385)}\\[/tex]

Step-by-step explanation:

Here the "X" Values are given, thus the corresponding "Y" values will be

[tex]Y = log (3 X)\\a) X = \frac{1}{1} , Y =  log (3 * \frac{1}{3} ) = log (1) = 0\\b) X = 1, Y = log (3*1) = log (3) = 0.477\\c) X = 3, Y = log (3*3) = log (9) = 0.954\\d) X = 9, Y = log (3*9) = log (27) = 1.43\\e) X = 27, Y = log (3* 27) = log (81) = 1.90\\f) X = 81, Y = log (3 * 81) = log (243) = 2.385\\[/tex]

So the pattern would be

[tex]{(1/3, 0) , ( 1, 0.477), (3, 0.954), (9, 1.43), (27, 1.90), (81, 2.385)}\\[/tex]

please help, show me the steps

Answers

let's say, the number is "a".

what's three times "a"? well, 3*a or 3a.

ok... what's four more than that? well, 3a + 4

what's the square root of that? well,  [tex]\bf \sqrt{3a+4}[/tex]

alrite, and we know that's equal to 7...so

[tex]\bf \sqrt{3a+4}=7\impliedby \textit{squaring both sides} \\\\\\ (\sqrt{3a+4})^2=7^2\implies 3a+4=49\implies 3a=45\implies a=\cfrac{45}{3} \\\\\\ \boxed{a=15}[/tex]

Find the period of the function. y = 5 cos one divided by twox

Answers

[tex]\bf \qquad \qquad \qquad \qquad \textit{function transformations} \\ \quad \\ % function transformations for trigonometric functions \begin{array}{rllll} % left side templates f(x)=&{{ A}}sin({{ B}}x+{{ C}})+{{ D}} \\\\ f(x)=&{{ A}}cos({{ B}}x+{{ C}})+{{ D}}\\\\ f(x)=&{{ A}}tan({{ B}}x+{{ C}})+{{ D}} \end{array} \\\\ -------------------\\\\[/tex]

[tex]\bf \bullet \textit{ stretches or shrinks}\\ \left. \qquad \right. \textit{horizontally by amplitude } |{{ A}}|\\\\ \bullet \textit{ flips it upside-down if }{{ A}}\textit{ is negative}\\ \left. \qquad \right. \textit{reflection over the x-axis} \\\\ \bullet \textit{ flips it sideways if }{{ B}}\textit{ is negative}\\ \left. \qquad \right. \textit{reflection over the y-axis} \\\\ \bullet \textit{ horizontal shift by }\frac{{{ C}}}{{{ B}}}\\ [/tex]

[tex]\bf \left. \qquad \right. if\ \frac{{{ C}}}{{{ B}}}\textit{ is negative, to the right}\\\\ \left. \qquad \right. if\ \frac{{{ C}}}{{{ B}}}\textit{ is positive, to the left}\\\\ \bullet \textit{vertical shift by }{{ D}}\\[/tex]

[tex]\bf \left. \qquad \right. if\ {{ D}}\textit{ is negative, downwards}\\\\ \left. \qquad \right. if\ {{ D}}\textit{ is positive, upwards}\\\\ \bullet \textit{function period or frequency}\\ \left. \qquad \right. \frac{2\pi }{{{ B}}}\ for\ cos(\theta),\ sin(\theta),\ sec(\theta),\ csc(\theta)\\\\ \left. \qquad \right. \frac{\pi }{{{ B}}}\ for\ tan(\theta),\ cot(\theta)[/tex]

so.. with that template in mind, let's see

[tex]\bf \begin{array}{llll} y=5cos&\left(\frac{1}{2}x\right)\\ &\ \uparrow \\ &\ B \end{array}\qquad period\qquad \cfrac{2\pi }{B}\implies \cfrac{2\pi }{\frac{1}{2}}\implies \cfrac{2\pi }{1}\cdot \cfrac{2}{1}\implies 4\pi [/tex]

Please Help!! Find the measure of angle 2. Image Attached

Answers

opposite angles = 180 degrees

180-111 = 69

 angle 2 = 69 degrees

linear function graph express in slope intercept form

Answers

The slope intercept form is y=(1/4)x-4

midpoint of 4 – 3i and –2 + 7i please help!!!!!


Answers

hello : 
 let  : z = 4-3ii       z' = -2+7i
 the distance between the points 4-3i and -2+7i is : |z - z' |
 |z - z' | = |4-3i+2-7i| = |6-10i | =√(6²+(-10)²) =√136

An electronic device that previously sold for $21 has been reduced to 17.43. the price reduction, rounded to the nearest whole percent is

Answers

percent decrease = (new number - original number) / original number...* 100
                            = (21 - 17.43) / 21....* 100
                            = 3.57 / 21....* 100
                            = 0.17 * 100
                            = 17%.....the price reduction was 17%

The price reduction, rounded to the nearest whole percent is [tex]17[/tex]%.

What is whole number?

The whole numbers are the part of the number system which includes all the positive integers from 0 to infinity. These numbers exist in the number line.

What is Percentage?

In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.

According to question, an electronic device that previously sold for $[tex]21[/tex] has been reduced to [tex]17.43[/tex]

We have to find the price reduction, rounded to the nearest whole percent .

So percentage reduction

[tex]=\frac{21-17.43}{21}[/tex]×[tex]100[/tex]%

[tex]=0.17[/tex]×[tex]100[/tex]%

[tex]=17[/tex]%

Hence, price reduction, rounded to the nearest whole percent is [tex]17[/tex]%.

Learn more about Percentage here:

https://brainly.com/question/92258?referrer=searchResults

#SPJ2

Find 3 consecutive even intergers if the sum is 108

Answers

x+ (x+2)+(x+4)= 108
3x+6= 108
3x=102
x= 34

Final answer: 34, 36, 38

the ratio of the corresponding side of two regular polygons is 3:4 the area of the larger polygon is 320 m squared what is the area of the smaller polygon?

Answers

The area of the smaller polygon with a side ratio of 3:4 is 180 m2 for the smaller polygon.

When dealing with the areas of similar polygons, if the ratio of corresponding sides is given, such as 3:4 in this case, the ratio of their areas is the square of the ratio of their sides. This is because the area is a two-dimensional measure, so each dimension is scaled by the ratio.

Given that the area of the larger polygon is 320 , we establish that the scale factor is 3 for the smaller polygon and 4 for the larger one.

To find the area of the smaller polygon, we use the fact that the ratio of the areas is (3/4)2 = 9/16.

This means that the area of the smaller polygon is 9/16 times the area of the larger polygon. Therefore, focusing on the comparison of areas, we calculate:

Area of smaller polygon = (9/16) x Area of larger polygon

= (9/16)  x 320

Area of smaller polygon = 180

Find the volume of a sphere that has a surface area of 16 sq. in.
A. (32/3) cubic inches
B.8 cubic inches
C.(4/3) cubic inches

Answers

Given the surface area of the sphere, for us to obtain the volume we need to get the value of the radius. The surface area of the sphere is given by:
S.A=4πr^2
hence the radius can be calculated as follows;
16=4πr^2
4=πr^2
r=(4/π)^(1/2)
volume of a sphere is given by:
V=4/3πr^3
=4/3*π*(4/π)^(1/2))^3
=32/3 cubic inches


Answer:

A is the answer

help me create an extraneous radical equation please using this model!! :) thank you.
[tex]a \sqrt{x}+b + c = d[/tex]

I don't need you to solve it, just help me pick numbers for variable a, b, c, and d to create an extraneous solutuion

Answers

If you are sure that's exactly what the equation is:

b,c,d are all numbers, so indeed, focus on a single number, say 'e'. Also a can't be zero, or there is no equation at all! So, again all numbers can be grouped:

a*sqrt(x) + b+c=d ---> sqrt(x) = f, f some number.

x = f^2 is the solution.

To be extraneous, means that it does not solve the equation.

Why here? Because by definition in mathematics sqrt( f^2) is not f! but abs(f), that is:

sqrt(9)=3,

So you just need to set the numbers to -3: (thinking x=9)

2*sqrt(x) + 7 -4 = -3

this gives: sqrt(x) = -3, from which x= 9, but sqrt(9) = 3.

It's kind of tricky, because many forget the definition that sqrt(a^2) = abs(a).

The same does not happen when looking for roots.

You should ask your teacher to make sure this is what they want.

Let me say that usually extraneous solutions are those which come out after solving an equation but make no sense when substituted in the original equation. But with sqrt(x) and your so particular equation, there is nothing else to say.

If f(x)=x-7 and g(x)=x^3, what is G(f(x))?

A. x^3+x-7
B. x^3(x-7)
C. X^3-7
D. (x-7)^3

Answers

replace the 'x' in the formula for g(x) by f(x):-

g(f(x)) =  (x-7)^3

Its D

Answer:

D.  [tex](x-7)^3[/tex]

Step-by-step explanation:

Given functions are,

[tex]f(x) = x-7-----(1)[/tex]

[tex]g(x)=x^3-----(2)[/tex]

Now,

[tex]g(f(x))=g(x-7)[/tex]     ( From equation (1) ),

[tex]=(x-7)^3[/tex]            ( From equation (2) ),

[tex]\implies g(f(x)) = (x-7)^3[/tex]

Hence, Option D is correct.

andy states, " if the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram."

A.True
B.False

Answers

A. True, to bisect is to divide into equal or congruent halves. Because you can do so it means its going to be a parallelogram.

The statement "If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram." is True .

What is parallelogram?

"It is a quadrilateral whose opposite sides are parallel and equal in length."

What is diagonal?

"It is a straight line that connects the opposite corners of a polygon through its vertices."

According to the question

The statement states that

"if the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram."

Now ,

As per properties of parallelogram

In any quadrilateral the two diagonals bisect each other is a parallelogram .

Hence, The statement is True .

To know more about parallelogram here:

https://brainly.com/question/1563728

#SPJ3

A sample of size 40 is taken from an infinite population whose mean and standard deviation are 68 and 12 respectively. the probability that the sample mean is larger than 70 equals:

Answers

To solve this problem, we can use the z statistic to find for the probability. The formula for z score is:

z = (x – u) / s

Where,

u = the sample mean = 68

s = standard deviation of the samples = 12

x = sample value = 70

In this case, what is asked is the probability that the sample mean is larger than 70, therefore this corresponds to the right of z on the graph of normal distribution.

z = (70 – 68) / 12

z = 2 / 12

z = 0.17

Therefore finding for P at z ≥ 0.17 using the standard distribution tables:

P (z = 0.17) = 0.5675

But this is not the answer yet since this is the P to the left of z. Therefore the correct one is:

P (z ≥ 0.17) = 1 - 0.5675

P (z ≥ 0.17) = 0.4325 = 43.25%

 

The probability that the sample mean is larger than 70 is 43.25%

The probability that the sample mean is larger than 70 for a sample size of 40 from a population with a mean of 68 and standard deviation of 12 is approximately 14.69%.

To determine this probability, we can use the Central Limit Theorem (CLT), which states that the distribution of sample means will be approximately normal if the sample size is large enough (n ≥ 30 is a common benchmark).

The standard error of the mean is calculated using the formula:

SE = σ / √n

Where σ is the population standard deviation and n is the sample size.

In this case:
σ = 12
n = 40

Therefore,

SE = 12 / √40 ≈ 1.8974

The z-score is calculated using the formula:

z = (M - μ) / SE

Where M is the sample mean,
μ is the population mean,
SE is the standard error.

Given,
μ = 68
M = 70

Therefore,

z = (70 - 68) / 1.8974 ≈ 1.054

Using the z-table, we find the probability that a z-score is less than 1.054 is approximately 0.8531.

However, we need the probability that the sample mean is greater than 70, so we subtract this from 1,

1 - 0.8531 ≈ 0.1469

Thus, the probability that the sample mean is larger than 70 is approximately 0.1469, or 14.69%.

geometry. helppp!!! please explain this

Answers

Answer: 10

----------------------------------------------

Explanation:

Segment TU must be congruent (equal in length) to segment UV in order for the angle TSV to be bisected by segment SU

Bisected = cut in half

So because TU = UV, we can say,

TU = UV
3x+18 = 4x+8
3x+18-3x = 4x+8-3x
18 = x+8
18-8 = x+8-8
x = 10

What is the value of 10 C 2

Answers

The formula to use is the nCr combination formula
n C r = (n!)/(r!*(n-r)!)
where the exclamation marks indicate factorial notation

Plug n = 10 and r = 2 into the formula
n C r = (n!)/(r!*(n-r)!)
10 C 2 = (10!)/(2!*(10-2)!)
10 C 2 = (10!)/(2!*8!)
10 C 2 = (10*9*8!)/(2!*8!)
10 C 2 = (10*9)/(2!)
10 C 2 = (10*9)/(2*1)
10 C 2 = 90/2
10 C 2 = 45

Answer: 45

What is the next number in the sequence 5 10 3 15 20 13 25 30?

Answers

We are asked to determine the next numbers in the given sequence such as 5 10 3 15 20 13 25 30. In order for us to answer this problem, we need to find the difference between the two consecutive number and perform subtraction such as shown below:
For 5 and 10, the difference is -5
For 10 and 3, the difference is 7
For 3 and 15, the difference is -12
For 15 and 20, the difference is -5
For 20 and 13, the difference is 7
For 13 and 25, the difference is -12
For 25 and 30, the difference is -5

Now, we can identify the next two numbers in the sequence since we already know that the format of the difference is -5, 7 and -12. So the next numbers are the following:
30 - 7 = 23
23- (-12) = 35

Therefore, the sequence is 5 10 3 15 20 13 25 30 23 35



Foe the AP given by a1,a2,......,an,...with non zero common difference, the equation satisfied are

Answers

The given sequence is
a₁, a₂, ..., [tex] a_{n} [/tex]

Because the given sequence is an arithmetic progression (AP), the equation satisfied is
[tex] a_{n}=a_{1}+(n-1)d [/tex]
where
d =  the common difference.

The common difference may be determined as
d = a₂ - a₁

The common difference is the difference between successive terms, therefore
d = a₃ - a₂ = a₄ - a₃, and so on..

The sum of the first n terms is
[tex]S_{n}= \frac{n}{2} (a_{1}+a_{n})[/tex]

Example:
For the arithmetic sequence
1,3,5, ..., 
the common difference is d= 3 - 1 = 2.
The n-th term is
[tex]a_{n}=1+2(n-1)[/tex]

For example, the 10-term is
a₁₀ = 1 + (10-1)*2 = 19
Th sum of th first 10 terms is
S₁₀ = (10/2)*(1 + 19) = 100



Four students get 90s on a test, three get 70s, 2 get 60s and one gets an 80. what is the mean test score in this group?

Answers

The mean score will be given by:
mean=
mean=[90*4+70*3+2*60+80]/10
=[360+210+120+80]/10
=770/10
=77
the mean score is 77

Final answer:

The mean test score for the group is calculated by summing the products of each unique score and the number of students who received it, then dividing by the total number of students. In this case, the mean test score is 77.

Explanation:

To calculate the mean test score for the group, you multiply each score by the number of students who received it, then sum all those products, and finally divide by the total number of students. Four students scoring 90 would contribute 4 x 90 = 360 to the total sum. Three students scoring 70 contribute 3 x 70 = 210. Two students scoring 60 contribute 2 x 60 = 120. One student scoring 80 adds 80 to the sum. The total sum of all scores is 360 + 210 + 120 + 80 = 770. Since there are a total of 10 students (4 + 3 + 2 + 1), the mean score is calculated as 770 ÷ 10 = 77. Therefore, the mean test score in this group is 77.

Other Questions
A comma may be used correctly to do any of the following Except blank.A.) Join sentences when used with a conjunctionB.) Set off introductory word, clause, or phraseC.) Set off interrupting words or expressionsD.) Call attention to what follows it If the exact terms of the listing agreement are met, the listing broker is entitled to a commission, even if the: Pathogens can be transmitted through contact with surfaces like doorknobs and countertops. Please select the best answer from the choices provided. T or F qu es ms importante para ti, tener la tecnologa ms avanzada o conservar el medio ambiente? which description matches the transformations y=cosx undergoes to produce y= -2cos3xA. Horizontal compression by factor 1/3, vertical stretch by factor 2, then a reflection through the x-axisB. reflection through the y-axis, vertical shift of 2 units, horizontal shift right by 3 unitsC.Horizontal shift 2 units, then vertical shift up by 3 unitsD.Horizontal stretch by factor 2, reflection through the x-axis, then the vertical stretch by factor 3 g(a) = 3^3a-2 . Find g(1) what conclusion did rutherford draw from this experiment? You are treating a middle-aged man with chest discomfort. he has a history of three previous heart attacks and takes nitroglycerin as needed for chest pain. you have standing orders to administer aspirin to patients with suspected cardiac-related chest pain or discomfort. while your partner is preparing to give oxygen to the patient, you should: need help with this inequality A motorboat approaches you head-on and sounds one short blast. how do you signal that you agree to let it pass on your port (left) side? Measuring intelligence by testing is a rather new concept in the history of the world. the idea of such testing came from ________. A set of n = 15 pairs of X and Y scores has SSX = ...A set of n = 15 pairs of X and Y scores has SSX = 10,SSY = 40, and SP = 30. What is the slope for the regression equation for predicting Y from X? A client at 42 weeks of gestation is 3 cm dilated and 30% effaced, with membranes intact and the fetus at 12 station. fetal heart rate (fhr) is 140 beats/minute. after 2 hours, the nurse notes that, for the past 10 minutes, the external fetal monitor has been displaying an fhr of 190 beats/minute. the client states that her baby has been extremely active. uterine contractions are strong, occurring every 3 to 4 minutes and lasting 40 to 60 seconds. which finding would indicate fetal hypoxia? Sentimentality can _____. work against an author because it might cause readers to reject a story or its characters work against an author because it might cause readers to want more excitement or plot twists help an author because it makes a plot more interesting help an author because it makes a story more realistic In the initial milgram study, the experimenter asked participants to shock someone else whenever that person made a mistake on a learning task. the results of his initial study showed that people How to find the midpoint formula Which statement is true of antibodies? They are specific to antigens. They form T lymphocytes. They directly attack T cells. They start the inflammatory response. Gold was discovered on my land in 1848. i tried to keep this secret, but word got out and caused huge amounts of people to move west. who am i? The underlying assumption of the harrod-domar growth model is that In 1967, the united states supreme court ruled unanimously that laws prohibiting interracial marriage were unconstitutional, which ended the legal practice of Steam Workshop Downloader