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vichka [17]
4 years ago
11

The data set shows the numbers of hours that employees at a certain shop worked in one week. What is the mean number of hours th

ey worked that week? 34 36 32 40 39 17 35 33 36 34
Mathematics
2 answers:
lyudmila [28]4 years ago
6 0

Answer:

33.6

Step-by-step explanation:

The following data set shows the numbers of hours that employees at a certain shop worked in one week

34 36 32 40 39 17 35 33 36 34

The mean is the average of the numbers. It is easy to calculate - add up all the numbers, then divide by how many numbers there are.

Hence,

\text{mean}=\dfrac{34+36+32+40+39+17+35+33+36+34}{10}=\dfrac{336}{10}=33.6

Ilia_Sergeevich [38]4 years ago
4 0

Answer:33 add all the numbers up and then divided by how many number there is

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Use the distributive property to write each expression as an
notsponge [240]

Answer:

Use the distributive property to write each expression as an equivalent algebraic expression:-

a.) 4(x + 5) = 4x + (4 x 5 ).

= 4x + 20 .

b.) 3(2x - 4) = 3 x 2x = 6x - (3 x -4 )

= 6x - 12 .

C.) -2(x - 6) = -2x - ( -2 x -6 ) .

= -2x - 12 .

<h2>Hope this helps you !! </h2>
7 0
2 years ago
Read 2 more answers
*FIRST ANSWER GETS BRAINLIEST*
svet-max [94.6K]

The other solution to the equation is -3.

Step-by-step explanation:

Given equation is;

5x²+bx+12=0

One solution is -4/5

We will put this solution in Eqn to get the value of b first,

5(\frac{-4}{5})^2+b(\frac{-4}{5})+12=0\\5(\frac{16}{25})+(\frac{-4b}{5})+12=0\\\frac{16}{5}-\frac{-4b}{5}=-12\\

Multiplying each term by 5

5*(\frac{16}{5})-\frac{-4b}{5}*5=-12*5\\16-4b=-60\\-4b=-60-16\\-4b=-76

Dividing both sides by -4

\frac{-4b}{-4}=\frac{-76}{-4}\\b=19

Putting b=19 in given Eqn

5x²+19x+12=0

Here,

a=5 , b=19 , c=12

Using quadratic formula,

x=\frac{-b\±\sqrt{b^2-4ac}}{2a}\\x=\frac{-(19)\±\sqrt{(19)^2-4(5)(12)}}{2(5)}\\\\x=\frac{-19\±\sqrt{361-240}}{10}\\\\x=\frac{-19\±11}{10}\\

Either,                   or,

x=\frac{-19+11}{10},\ \ \ \ \ \ x=\frac{-19-11}{10}\\x=\frac{-8}{10},\ \ \ \ \ \ \ \ \ x=\frac{-30}{10}\\x=\frac{-4}{5},\ \ \ \ \ \ \ \ \ \ x= -3

The other solution to the equation is -3.

Keywords: linear equation, quadratic formula

Learn more about quadratic formula at:

  • brainly.com/question/7128279
  • brainly.com/question/6788996

#LearnwithBrainly

6 0
3 years ago
(2x^2+5x-7)+(3-4x^2+6x)
jarptica [38.1K]
-2x^2 + 11x - 4

To get this answer, you need to combine like terms. However, before this, remember that you are ADDING, so don’t accidentally subtract any numbers.

Then, just follow these steps:

2x^2 + (-4x^2) = -2x^2

5x + 6x = 11x

-7 + 3 = -4

And proceed to put them in the equation correctly.

Hope this helps!
6 0
3 years ago
Please help<br><br> See the picture
Wewaii [24]

Answer:

The equation is y=-6x+3

Step-by-step explanation:

the y-intercept is 3 and the slope is 6

6 0
3 years ago
Can somebody explain slope to me with the formula and with the graph
slavikrds [6]

Answer:

Step-by-step explanation:

The slope formula is M=y2-y1

                                   ______

                                        X2-X1

Ex. (-1,1) and (1,-2)

      x1,y1       x2,y2

-2+1        -3

_____= ____  

1+(+1)        2

Graph:

Any linear function can be quickly graphed using the form: y=mx+b

X: independent variable

y: dependent variable

M: slope

b: y-intercept

(When you don't have a denominator for M put a 1 Ex. 4--> 4/1)  

Ex. y=-1/2x + 4

M= 1/2

B: 4

Rise/Run = -1/2     "rise" (being the change in y, going up or down) divided by the "run" (being the change in x, going from left to the right).

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4 years ago
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