In school the ratio of the number of pupils to the number of teachers is 20:1 of the number of pupils is 840 how many teachers are there

ITS THE LAST ONE

Step-by-step explanation:

2X+3>9

2X>-12

X>-6

Answer: 3 hours

Step-by-step explanation:

Divide 135 by 45

Answer:

Zack wins.

Step-by-step explanation:

Vanessa's score = [tex]-3\frac{5}{8}[/tex]=-3.625

Zack's score = [tex]-3\frac{2}{3}[/tex]=-3.667

Answer: the answer is D: Comparing the decimal equivalents of their scores shows that Zack won because Negative 3.Modifying Above 6 with bar  is less than –3.625.

Step-by-step explanation: i got it right on the test Hope it helps! :)

Answer:

Step-by-step explanation:

What are the two closest square numbers to 73?

64 and 81

[tex]\sqrt{64} \leq \sqrt{73} \leq \sqrt{81}\\8\leq \sqrt{73} \leq 9\\8*9 = 72[/tex]

Answer:

72

Step-by-step explanation:

Since $73$ is between $64=8^{2}$ and $81=9^{2}$, we know that $\sqrt{73}$ is between $8$ and $9.$ Our answer is $8\cdot9=\boxed{72}.$

0.2x + 2.7x - 8.1 = 6.9 + 1.1x

Combine like terms on left side:

0.2x + 2.7x = 2.9x

Now you have:

2.9x -8.1 = 6.9 + 1.1x

Subtract 1.1x from both sides:

1.8x - 8.1 = 6.9

Add 8.1 to both sides:

1.8x = 15

Divide both sides by 1.8:

X = 8.3333 ( round as needed) or as a fraction = 8 and 1/3

Answer:

8.3recurring

Explanation:

0.2x+2.7x =2.9x

rewrite the questions

2.9x-8.1=6.9+1.1x

like terms together. Therefore:

2.9x-1.1x = 1.8x

8.1 will go to the other side of the equal sign. Therefore:

8.1+6.9 = 15

Therefore: 1.8x = 15

x =15/1.8 which is equal to 8.3recurring

Answer:

D.) y-4=3[(x-(-1)]

Step-by-step explanation:

just took the test hope this helps

Answer: B. f(x)=(x+4)(x-2)^2(x+3)

Step-by-step explanation:

in the graph there's two negative x value and one positive x value

so the function should be in a form of f(x)= (x+a) (x-b)^2 (x+c)

the one with negative value has a square, (x-b)^{2}, because that's where the y = 0 (the point is hitting the (x,0))

Answer: B

Step-by-step explanation:

Answer:

( - 5, 1 )

Step-by-step explanation:

( [tex]\frac{x_{1} +x_{2} }{2}[/tex] , [tex]\frac{y_{1} +y_{2} }{2}[/tex] )

( [tex]\frac{-3-7}{2}[/tex] , [tex]\frac{8-6}{2}[/tex] ) = ( - 5, 1 )

Answer:

the missing angle is 45

180-135=45

Answer:

C. Can you plz mark me brainliest?

Step-by-step explanation:

Answer:

It is 3

Step-by-step explanation:

I know it is 3 because multiply every nimber on the and you will get the number frome the bottom.

The number of modes in the dataset is 1. The dataset is unimodal. The correct option is therefore;

1 mode

A unimodal data is a set of data that has only one mode. The mode is a measure of central tendency.

The data in the question can be presented as follows;

Kate, Tim, John, John, Angelam, Tim, Sue

The frequency of each of the data is therefore;

Kate; 1, Tim; 1, John; 2, Angela; 1, Tim; 1, Sue; 1

The mode of a dataset, is the value that has the highest frequency, or that appears the most in the dataset.

The data that has the highest frequency is John, the mode of the dataset is therefore, John, which has a frequency of 1

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Answer:

The ordered pairs which are solution to given inequality are:

(0,-9)

(5,4)

Step-by-step explanation:

In order to check if the given ordered pairs are solution of the inequality or not we will put the ordered pairs one by one in the inequality.

If the inequality is holds true for the ordered pair, the ordered pair is the solution.

The inequality is:

[tex]y - 3x < -8[/tex]

So,

For (1,-5):

[tex]y - 3x < -8\\-5-3(1) < -8\\-5-3<-8\\-8<-8[/tex]

(1,-5) is not the solution of given inequality.

For (-3,-2):

[tex]-2 - 3(-3) < -8\\-2+9<-8\\7<-8[/tex]

(-3,-2) is not the solution of given inequality.

For (0,-9):

[tex]y - 3x < -8\\-9-3(0) < -8\\-9 <-8[/tex]

(0,-9) is the solution of the given inequality.

For (2,-1):

[tex]y - 3x < -8[/tex]

[tex]-1 - 3(2) < -8\\-1-3<-8\\-4<-8[/tex]

(2,-1) is not the solution of given inequality

For (5,4):

[tex]y - 3x < -8\\4 - 3(5) < -8\\4-15<-8\\-11<-8[/tex]

(5,4) is the solution of given inequality.

Hence,

The ordered pairs which are solution to given inequality are:

(0,-9)

(5,4)

Good!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer:

sorry, what??????????

1. infinitely many solutions

2. (-1,2)

3. No real solutions

The given graphs of the system of equations will have an infinite solution, unique solution and no solution, respectively.

The types of system of equations in mentioned below.

Inconsistent System

For a system of equations to have no real solution, the lines of the equations must be parallel to each other.

Consistent System

1. Dependent Consistent System

For a system of the equation to be a Dependent Consistent System, the system must have multiple solutions for which the lines of the equation must be coinciding.

2. Independent Consistent System

For a system of the equation to be an Independent Consistent System, the system must have one unique solution for which the lines of the equation must intersect at a particular.

A.) For the first graph since the lines overlap or lie on each other, therefore, the given system of equation in the first graph will be of Dependent consistent system. Thus, the system will have an infinite number of solutions.

B.) For the second graph since the lines intersect at a particular point, therefore, the given system of equations in the second graph will be an Independent consistent system. Thus, the system will have a unique solution number of solutions. Also, the solution of the equation is the point at which the lines intersect, therefore, the solution of the system of the equation will lie at (-1,2.)

C.) For the third graph since the lines are parallel to each other, therefore, the given system of equations in the third graph will be an Independent consistent system. Thus, the system will have no solutions.

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Answer:

y=3/4x-11

Step-by-step explanation:

When a line is perpendicular to another line, their slope is the opposite reciprocal of that. So in this case, the slope of the perpendicular line would be positive 3/4. Next, plug in the points (8,-5) in the y=mx+b formula along with the new slope. In conclusion, the new point slope formula is y=3/4x-11.

Hope this helps! :)

Answer:

Equation for the slope of the line is, m=y2−y1x2−x1

∵ the point B(5, 8) is above A(3, 4), hence, and B(x2,y2),∵ the point B(5, 8) is above A(3, 4), hence, 

A(x1,y1)→A(3,4) and B(x2,y2)→B(5,8)A(x1,y1)→A(3,4) and B(x2,y2)→B(5,8)

m=8−45−3=2⇒m=8−45−3=2

please mark as brainliest

Related

The slope is the intensity of inclination thus the slope of the line that passes through points (8, 4) and (5, 3) is 1/3.

A slope is a tangent or angle at a point and a slope is the intensity of inclination of any geometrical lines.

Slope = Tanx where x will be the angle from the positive x-axis at that point.

The slope of a line that passes through (x₁, y₁) and (x₂, y₂) is,

Slope = (y₂ - y₁)/(x₂ - x₁)

Since, the given line is passing through (8, 4) and (5, 3).

Slope = (3 - 4)/(5 - 8)

Slope = -1/-3 = 1/3

Hence "The slope is the intensity of inclination thus the slope of the line that passes through points (8, 4) and (5, 3) is 1/3".

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Answer:

Step-by-step explanation:

First picture

I believe this one is C

Second picture

C and D are functions. The other two will not pass the vertical line test. They have the same x used.

Answer:

false

Step-by-step explanation: the diameter has to be double the amount of the radius

Answer:

false

Step-by-step explanation:

r=d\2

12=d\2

24=d

d=24

Answer:

This is the answer...............

..

Answer: No

Step-by-step explanation: Since y=2x+1 does not pass through the origin (i.e. there exists the constant term of 1 ), the variables y and x are not directly proportional - though, they do have a linear relationship.

fjfngdkscfnvfv vofjvc jfggrrgf bkfjbn fbjnrjh rhkrjnfk gekrjeofn??????

Step-by-step explanation:

Answer:

the domain would be -∞≤✓≤ ∞

Step-by-step explanation: Brainliest Please

Answer:

65%

Step-by-step explanation:

1820/2800 percent.

(65%)

The unit rate declines on the of people satisfied/ the number of people total.

Hope this helps plz mark brainliest :D

Step-by-step explanation:

1820/2800

=65%

hope this may help you

Answer:

20 people come in per hours

Step-by-step explanation:

Because if you just take 120 and divide that by 60 you would get 20 so there are 20 poeple coming in per hour

The unit price in dollars per orange is $ 4. 2

A unit price is the price for a given commodity or service that includes all extra costs attached to the item.

It is described as the product's average price.

It is determined by dividing the product's total sales revenue by the total units sold for the product.

It is known as the price per unit of the product.

From the information given, we have that;

$3.84 for a bag of 16 oranges

The unit price;

= 16/3. 84

Divide the values

= $4. 166

=$ 4. 2

Hence, the value is $ 4. 2

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Answer:

225 Calculators cost $17

Step-by-step explanation:

Since the Function () is Representing the cost, it is logical 17 dollars is the cost, and the 225 is the number of calculators.

Answer:

0.83

Step-by-step explanation:

Divide: -5 / 6 = -0.83333333

Answer:

Today : Saturday, 07 November 2020

Hour: 14.40 WIB (Indonesia)

_______________________________

-5/6 = -0,83 or - 0,833

6/-5 = -0,833

0

__-

50

48

___-

20

18

___-

20

18

____-

etc

Answer:

I think its B i might be wrong

Step-by-step explanation: