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Aloiza [94]
3 years ago
15

Simplify the expression: 4(2 + 8v) =

Mathematics
2 answers:
yawa3891 [41]3 years ago
6 0

Answer:

8 + 32v

Step-by-step explanation:

erastovalidia [21]3 years ago
5 0

Answer:

8+32v

Step-by-step explanation:

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there are 1000 worker in a factory. each worker works 30 hours a weeks and is paid $10.50 an hour. how much does the company pay
yuradex [85]
$315,000 hope this helps
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your cousin is 26 years older than your sister. The product of their ages is 560. How old is your sister?
Vera_Pavlovna [14]
Your answer is approximately 21 years old
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3 years ago
Read 2 more answers
A shopkeeper earns Rs. 380 in the first week, Rs. 660 in the second week and Rs. 860 in the third week. Earning is the quadratic
fomenos

9514 1404 393

Answer:

  e(w) = -40w^2 +400w +20

Step-by-step explanation:

A graphing calculator or spreadsheet can do the quadratic regression and help you find the formula. Here earnings (e) as a function of weeks (w) can be expressed by ...

  e(w) = -40w^2 +400w +20

__

<em>Further development</em>

There are a couple of other ways you can go at this. One is to write equations for a, b, c using the standard form quadratic.

  aw^2 +bw +c = e

  a +b +c = 380 . . . . . . for week 1

  4a +2b +c = 660 . . . for week 2

  9a +3b +c = 860 . . . for week 3

The solution of this system of equations will give the coefficients of the quadratic. Your graphing calculator or any of several web sites can solve these equations for you.

__

Consider the differences between quadratic values for w = 1, 2, 3.

  e2 -e1 = (4a +2b +c) -(a +b +c) = 3a +b

  e3 -e2 = (9a +3b +c) -(4a +2b +c) = 5a +b

Then the second differences are ...

  (e3 -e2) -(e2 -e1) = (5a +b) -(3a +b) = 2a

In the given set of numbers, the first differences are ...

  660 -380 = 280 . . . . . . . call this d1

  860 -660 = 200

And the second difference is ...

  200 -280 = -80 . . . . . . . call this d2

From the above, we know that 2a = -80  ⇒  a = -40

and 3a +b = 280 = 3(-40) +b  ⇒  b = 400

Finally, a+b+c = 380 = -40 +400 +c  ⇒  c = 20

Then the generic solution is ...

  a = d2/2

  b = d1 -3a

  c = e1 -a -b . . . . . where e1 is the first-week's earnings

3 0
3 years ago
Which one it’s it?????????? I can’t seem to find the answer.
marysya [2.9K]
-- Take a piece of paper
-- Take a pencil or a pen
-- Write the first nine or ten terms of the sequence:

Term   Value 
  #1          0  
  #2          0.5 
  #3          1 
  #4          1.5 
  #5          2 
  #6          2.5 
  #7          3 
  #8          3.5 
  #9          4
 #10          4.5

-- Now, find the graph of that sequence of numbers.

Hint:  It's Graph-D .
3 0
2 years ago
The mean and the standard deviation of the sampled population are 225.8and 17.8 respectively. What is the mean and standard devi
xxMikexx [17]

Answer:

Mean and standard deviation of the sample mean are 225.8 and 3.56 respectively.

Step-by-step explanation:

The mean (μₓ) and standard deviation of the sample mean (σₓ) are related to the mean (μ) and standard deviation of the population (σ) through the following relationship

μₓ = μ = 225.8

σₓ = σ/√n = 17.8/√25 = 17.8/5 = 3.56

7 0
3 years ago
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