What is the mean score Score
90
80
70
60

Answers

Answer 1

Answer:

75

Step-by-step explanation:

Four scores....  add them together and divide by four

 (90 + 80 + 70 + 60) / 4 = 75


Related Questions

Select all solutions to the equation (2x-4)(x+5)=0

Answers

The solutions of the equation given as (2x - 4)(x + 5) = 0 are x = 2 or x = -5

What are equations?

Equations are mathematical expressions that have the same value when compared

How to determine the solutions?

From the question, we have the following equation that can be used in our computation:

(2x - 4)(x + 5) = 0

To start with:

We start by splitting the equation

So, we have the following representation

(2x - 4) = 0 or (x + 5) = 0

Next, we remove the brackets

So, we have the following representation

2x - 4 = 0 or x + 5 = 0

Next, we isolate the variables

This is done as follows

2x = 4 or x = -5

Divide both sides by the coefficient of the variable

This gives

x = 2 or x = -5

Hence, the solutions to the equation are x = 2 or x = -5

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Ray starts walking to school at a rate of 2 mi/h. Ten minutes later, his
sister runs after him with his lunch, averaging 6 mi/h.b. Solve the system
to determine how much time it took Ray's sister to catch up to him.
Your answer

Answers

Answer:

Ray walks 15 minutes prior to his sister and walk for 5 minutes to catches up

Step-by-step explanation:

The computation of the time taken is as follows:

Let us assume the Ray time be t

So his sister time would be t - 10

Since Ray distance is 2t

So his sister distance is 6(t - 10) = 6t - 60

As the distance is the same

So, the following equation must be made    

2t = 6t - 60

 -4t = -60

t = 15

Therefore Ray walks 15 minutes prior to his sister and walk for 5 minutes to catches up

 

Goldie Gold Jewelry uses direct labor hours to apply overhead and estimated total overhead costs at $52,500 and direct labor hours at 12,500 for the second quarter. The direct labor quantity standard is 1.75 direct labor hours per unit, and the company produced 5,250 units in the second month of the second quarter. This required 2,625 direct labor hours. What was the overhead rate for the second quarter?

Answers

In the case above, the value of the overhead rate for the second quarter is $17,640.

What is the overhead rate about?

Note that:

In the case above, for one to be able to calculate the predetermined overhead rate, a person need to divide the value of the  estimated overhead costs which is $52,500 by that of the estimated direct labor hours .

Predetermined overhead rate=Estimated overhead costs/ estimated direct labor hours

Predetermined overhead rate=$52,500/  12,500

Predetermined overhead rate=$4.20/DLH overhead rate

Hence:  $52,500/ 12,500 =   $4.20/DLH overhead rate.

Since the Overhead that was applied at standard hours was said to be allowed, then:

= $4.2 x 2,400 x 1.75

= $17,640.

Therefore, In the case above, the value of the overhead rate for the second quarter is $17,640.

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the area of a square is seasonal 25 cm Square calculate the length of a diagonal to one decimal place .




Answers

Answer:

The answer is 7.1cm to 1d.p

Step-by-step explanation:

Area of square =L²

25=L²

√L²=√25

L=5cm

hyp²=opp²+adj²

x²=5²+5²

x²=25+25

x²=50

√x²=√50

x=7.1cm to 1d.p

round the number shown to the underlined place value
9.954

Answers

Answer:

9

Step-by-step explanation:

Anything past the decimal point would be less than a whole. Anything before the decimal point is a whole number. Since 9 is before the decimal number, it is a whole number

Hope this Helps!

-kiniwih426

HELPPOOOPPPPPPPP MEEE

HELPPOOOPPPPPPPP MEEE

Answers

Answer:

(24x - 48y + 10) / 26 = a

Step-by-step explanation:

-12(-2x+4y) = 26a - 10

24x - 48y = 26a - 10

24x - 48y + 10 = 26a

(24x - 48y + 10) / 26 = a

which expression is equivalent to
2x-11x-6​

Answers

Answer:

Step-by-step explanation:

The expression 2x - 11x - 6 can be simplified as follows:

2x - 11x - 6 = -9x - 6

So, the equivalent expression is -9x - 6.

The answer is:

-9x - 6

Work/explanation:

To simplify this expression, we combine the like terms :

\(\huge\text{2x - 11x - 6} \\ \\ \\ \text{-9x - 6}\)

There's nothing that we can do for this expression. It's been simplified as much as possible.

Hence, the answer is -9x - 6.

HELPPP LAST ATTEMPT!!

HELPPP LAST ATTEMPT!!

Answers

Answer:

(0,4) is the answer hope it helps

I think it’s 0,4 if wrong check on Desmos

Explain how each pair of division and multiplication equations are the same, and how they are different.

Explain how each pair of division and multiplication equations are the same, and how they are different.

Answers

Answer:

they differ when they are in different sign's but Will be same if the division sign change and the forward number will be reciprocal so it will be the same

The H.C.F of
15 and 45

Answers

9514 1404 393

Answer:

  15

Step-by-step explanation:

When the smaller number is a divisor of the larger one, it is their highest common factor.

  HCF(15, 45) = 15

divide 405 in the ratio 4:11​

Answers

Step-by-step explanation:

Answer is in the photo

Hope it helllps

Good luck

divide 405 in the ratio 4:11

The division of the number 405 in the ratio 4:11 is 297 and 108 respectively.

What are ratios and proportions?

An ordered pair of numbers a and b, represented as a / b, is a ratio if b is not equal to 0. A proportion is an equation that sets two ratios at the same value. The numerical relationship between two values demonstrates how frequently one value contains or is contained within another.

Given that the ratio is 4:11. the number is 405 which has to be divided by the ratio.

Let the common ratio between the numbers is x. Form an equation and solve for x.

4x + 11x = 405

15x = 405

x = 405 / 15

x = 27

The numbers are,

4x = ( 4 x 27 ) = 108

11x = ( 11 x 27 ) = 297

Therefore, the division of the number 405 in the ratio 4:11 is 297 and 108 respectively.

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If An = 4(2)^n-1 , what is Sa?​

If An = 4(2)^n-1 , what is Sa?

Answers

The sum of the geometric progression is the sum S₃ = 32

What is sum of terms of a geometric progression?

The sum of terms of a geometric progression is given by

Sₙ = a(rⁿ - 1)/(r - 1) where

a = first term ,r = common ratio and n = number of terms

Given the geometric progression, aₙ = 4(2)ⁿ⁻¹ comparng it with the general term of a geometric sequence aₙ = arⁿ⁻¹, then

a = first term = 4 and r = common ratio = 2

Now, we desire S₃, that is Sₙ when n = 3.

So, S₃ = a(r³ - 1)/(r - 1)

= 4(2³ - 1)/(2 - 1)

= 4(8 - 1)/1

= 4(8)

= 32

So, the sum S₃ = 32

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8. Given AABC~AEDC
What is the value of x?
C. 30
D. 20
A. 15
B. 12
A
E
60
X
C
D
10
40
B

Answers

Answer:

790

Step-by-step explanation:

7098uuilu4645

Each soccer team has 15 players. Each player is either 9 or
10 years old. The green team has eleven 9-year-olds. The
ed team has twice as many 10-year-olds as the green
eam. How many 9-year-olds are on the red team?

Answers

Answer:

8

Step-by-step explanation:

The green team has 11 9-year-olds, so the red team has 2 * 11 = 22 10-year-olds.

Since each team has 15 players, the red team has 15 - 22 = -7 more 10-year-olds than the maximum number of players it can have.

Therefore, the red team must have 22 - 7 = 15 - 7 = 8 9-year-olds.

Every team have 15 players
Green team has eleven 9 years olds means other 4 players are 10 years old
And red team have twice 10 years old players as green means 2(4)=8
And red team has eight 10 years old players and 7 9 years old

Paul is shopping for laundry detergent. At the grocery store, the liquid detergent is pricedat $14.99 for 64 loads of laundry and the same brand of powder detergent is priced at$15.99 for 80 loads. Which is the better buy, the liquid or the powder detergent?

Answers

Answer:

15.99 is better

Step-by-step explanation:

because when working with dividing decimals we need to make it a whole number so we would move it over to the right till it is a whole number (which is two spaces) but first we need to put our decimal in our quotient so two spots. and 1499 divided by 64 equals 23.421875 and 1599 divided by 80 equals 19.9875 so the 15.99 dollar one is a better deal.

ASAP I WILL GIVE BRAINIEST IF ANSWERED ASAP!! PLEASE PLEASE HELP

ASAP I WILL GIVE BRAINIEST IF ANSWERED ASAP!! PLEASE PLEASE HELP

Answers

Answer:

2x + 3 =84

Step-by-step explanation:

Answer:

2x + 3 = 84

Step-by-step explanation:

check all that apply. sec theta is undefinded for theta = ____ . A. pi/2
B.0 C. pi D.3pi/2

Answers

Answer:

Step-by-step explanation:

secθ = 1/cosθ

cosθ = 0 for π/2, 3π/2

secθ is undefined for θ = π/2, 3π/2

4) Adult tickets for the evening show at XD Theater are $11 and children's tickets are $Belf the theater seats 250 people, how many adult tickets must be sold for $2.300 of total sales? Answer: adult tickets ​

Answers

Omitted value: The price of children ticket was omitted in the question, so i used $8 to solve. You can input the correct value and solve the same way following the steps.

Answer: 100 adult tickets  must be sold.

Step-by-step explanation:

step 1

let  x represent Adults

AND y represent children

Since the theater seats 250 people we have that

x+y = 250..... equation 1

Also price for Adult ticket = $11

and  price children ticket =$8

With total sales at $2,300, we have that

11x + 8y= 2300----- equation 2

Step 2

Making y subject in equation 1

' x+y = 250

y= 250-x

Putting y= 250- x in equation 2

11x + 8(250-x)= 2300

11x +2000-8x= 2300

11x -8x = 2300-2000

3x= 300

x 300/3

x= 100.

To find y

 x+y = 250

100+y=250

y=250-100

y=150

Therefore 100 adult tickets and 150 children tickets must be sold to get a total sales of $2,300

what is 1,256 rounded to the nearest hundredth

Answers

Answer:

1,300

Step-by-step explanation:

1256, if something is more than 5 then it goes up but if it's 4 or lower it goes down so 1256 rounded up to the nearest hundredth is 1300.

Answer: 1300

1256, if something is more than 5 then it goes up but if it's 4 or lower it goes down so 1256 rounded up to the nearest hundredth is 1300

Step-by-step explanation:

Compute the missing x and y values so that each ordered pair will satisfy the given equation y=2x+4

Answers

The missing ordered pairs that satisfy the equation y = 2x + 4 are (3, 10) and (2, 8).

The equation given is y = 2x + 4. To compute the missing x and y values, we need to substitute the given ordered pairs into the equation and solve for the missing variable.

Let's assume we have an ordered pair (x, y) that satisfies the equation y = 2x + 4.

For example, let's say one missing value is x = 3. We can substitute this into the equation:

y = 2(3) + 4

y = 6 + 4

y = 10

So, the missing ordered pair is (3, 10).

Similarly, if another missing value is y = 8, we can substitute this into the equation and solve for x:

8 = 2x + 4

4 = 2x

x = 2

So, the missing ordered pair is (2, 8).

In summary, the missing x and y values that satisfy the equation y = 2x + 4 are (3, 10) and (2, 8).

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GOOD REVIEW IF BOTH OF THE ANSWERS ARE CORRECT

GOOD REVIEW IF BOTH OF THE ANSWERS ARE CORRECT

Answers

Answer for 1:

I don't know the actual answer, but for Forms, you can press ctrl + U and find the answers in the code

Answer for 2:

x = 28

Step-by-step explanation:

Since the overall angle is 90°, and we already have 33, we subtract 33 from 90

90 - 33 = 57

So we have to fill in the other 57°

2(28) = 56

56 + 1 = 57

So the answer is x = 28

Please explain the meaning of free semigroup based on the following quote simply. And give an example?

Please explain the meaning of free semigroup based on the following quote simply. And give an example?

Answers

Answer:

Free Semigroup: Consider a non empty set A = {a 1,a 2,.....a n }. Now, A* is the set of all finite sequences of elements of A, i.e., A* consist of all words that can be formed from the alphabet of A. If α,β,and,γ are any elements of A*, then α, (β. γ)= (α.β).γ.

Hope this helps. :)

y=2/3x + 7/3 -4x+6y=14

Answers

The sοlutiοn οf the system οf equatiοn is x = 0 and y = 7/3.

What is a incοnsistent system?  

If there is nο sοlutiοn tο a system οf equatiοns, it is incοnsistent system; οtherwise, there must be at least οne sοlutiοn. If a set οf equatiοns has infinitely many sοlutiοns, it is dependent.

Every οne οf the equatiοns in a system οf equatiοns must have a sοlutiοn in οrder fοr the system tο be cοnsistent. This demοnstrates that a set οf values fοr the variables may simultaneοusly satisfy all οf the system's equatiοns and shοw that they are nοt mutually exclusive.

There is nο sοlutiοn tο an equatiοn system that satisfies all οf the equatiοns in the system. This indicates that nο cοmbinatiοn οf values fοr the variables can cοncurrently satisfy all οf the system's equatiοns since they are incοmpatible.

The given equatiοns are:

y = 2/3x + 7/3

-4x+6y=14

Substituting the value of y in the second equation:

-4x + 6y = 14

-4x + 6(2/3x + 7/3) = 14

-2x + 4x + 14 = 14

2x = 0

x = 0

Substitute the value of x = 0 we have:

y = 2/3(0) + 7/3

y = 7/3

Hence, the solution of the system of equation is x = 0 and y = 7/3.

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Complete question:

Given system of equations y = 2/3x + 7/3 and -4x + 6y = 14

Find the value of x and y.

Q7 PLEASE HELP ME !!!!!!!!!!!!!!!!!!!

Q7 PLEASE HELP ME !!!!!!!!!!!!!!!!!!!
Q7 PLEASE HELP ME !!!!!!!!!!!!!!!!!!!
Q7 PLEASE HELP ME !!!!!!!!!!!!!!!!!!!

Answers

The outcomes that are contained in the events are

X = 3 and 10 ⇒ P(X) = 1/5Not X =1, 2, 4, 5, 6, 7, 8 ⇒ P(Not X) = 4/5

1 - P(X) = 4/5 and 1 - P(X) is the same as P(Not X)

The outcomes contained in the events

From the question, we have the following parameters that can be used in our computation:

X = gray colours

Given that

gray colours = 3 and 10

We have

X = 3 and 10

Not X =1, 2, 4, 5, 6, 7, 8

The probability is then calculated as

P(X) = 2/10 = 1/5

For P(Not X), we have

P(Not X) = 1 - 1/5 = 4/5

The equation of P(Not X)

In (a), we have

P(Not X) = 1 - 1/5 = 4/5

This means that

P(Not X) = 1 - P(X)

So, the solution is

1 - P(X) = 4/5

The equivalent expression

Using the above (a) and (b) as a guide, we have the following:

1 - P(X) is the same as P(Not X)

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A company that sells paper has a tiered pricing model based on how much paper you buy. If you buy less than 10 reams, they charge you $7 per ream and a shipping cost of $8. If you buy 10 or more reams but less than 20 reams, they charge you $6 per ream and a shipping cost of $16. If you buy 20 or more reams, they charge you $6 per ream and shipping is free.
a. Write a function that models the price in terms of the number of reams bought.
b. What is the domain of the function?
c. What is the range of the function?
d. How much will it cost to buy 25 reams of paper?
f. How much paper can you buy for $60?

Answers

The function can be defined as  price = 6x

It will cost $150 to buy 25 reams of paper.

How to explain the function

The domain of the function is all non-negative real numbers, since the number of reams bought cannot be negative.

The range of the function is all non-negative real numbers, since the price cannot be negative.

Fir 25 items, price = 6(25) = $150

It will cost $150 to buy 25 reams of paper.

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Can someone help with this?

Can someone help with this?

Answers

Answer:

Step-by-step explanation:

4+4i / 5+4i     now multiply by the conjugate  of the denominator

( 4+4i / 5+4i ) * ( 5-4i  / 5-4i )

= (20 + 4i -16)  / (25 -16)

= 4+4i / 9

\(\frac{4}{9}\) + \(\frac{4}{9}\) i

If m R = 29, what is m O? The figure is not drawn to scale


A. 29

B. 61

C. 151

D. 58

Answers

Cccccccc.................

Find the area and circumference of a circle with radius 8 ft use the value 3.14 for it and do not round your answer be sure to include the correct units in your answer

Answers

A= πr^2 (Pi multiplied by radius squared)
= 3.14 x 8^2 (Pi- 3.14 multiplied by radius- 8 squared)
= 3.14 x 64
=200.96 ft^2 (feet squared)

C= 2πr (2 multiplied by Pi multiplied by radius)
= 2 x 3.14 x 8
= 16 x 3.14
= 50.24 ft

is y=5/6 - 6 and x+5y-4 parallel

Answers

Yes it is equal to 5/6-6 and x+5y-4 parallel

help with this question​

help with this question

Answers

Answer:

56.8

Step-by-step explanation:

oihoy8y

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