1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lisabon 2012 [21]
3 years ago
8

Calculate the averages for each category for the three-month period. category jan. feb. mar. average wages $2,100.00 $2,300.00 $

2,000.00 $ donations $210.00 $230.00 $200.00 $ mortgage $590.50 $590.50 $590.50 $ electricity $101.25 $89.75 $80.00 $ water $20.10 $22.30 $24.55 $ car loan $172.54 $172.54 $172.54 $ food $200.25 $220.70 $205.50 $ insurance $310.50 $0.00 $0.00 $ clothes $0.00 $0.00 $75.00 $ car license fee $0.00 $120.90 $0.00 $ newspaper $0.00 $0.00 $45.00 $ movies $18.00 $0.00 $36.00 $ new car $100.00 $100.00 $100.00 $ gasoline $80.00 $70.00 $75.00 $ car repairs $0.00 $119.00 $0.00 $ miscellaneous $64.50 $59.25 $72.50 $ savings $140.00 $140.00 $140.00 $
Mathematics
1 answer:
yan [13]3 years ago
3 0
The averages for each category can be calculated by taking the sum of the values and dividing by the number of values .                             
                                 Jan                           Feb                          March
1) 
wages                    <span>$2,100.00                $2,300.00                $2,000.00
sum of the values = 2100 + 2300 + 2000 = 6400
number of values = 3
average = 6400/3 = $ 2133.33
</span><span>2)
donations                  $210.00                   $230.00                   $200.00
</span><span>average = (210 + 230 + 200)/3 
              = $ 213.33
3)
mortgage                   $590.50                   $590.50                  $590.50
</span><span>average = ( 590.50 + 590.50 + 590.50)/3 
              = $ 590.50
4)
electricity                   $101.25                     $89.75                     $80.00 
</span><span>average = (101.25 + 89.75 + 80.00)/3
              = 271/3
              = $ 90.33
5)
water                           $20.10                     $22.30                     $24.55
</span><span>average = (20.10 + 22.30 + 24.55)/3
              = 66.95/3
              = $ 22.32
6)
car loan                     $172.54                   $172.54                   $172.54
</span><span>average = (172.54 + 172.54 + 172.54)/3
              = $ 172.54
7)
food                           $200.25                   $220.70                   $205.50 
</span><span>average = (200.25 + 220.70 + 205.50)/3 
              = $ 208.82
8)
insurance                  $310.50                        $0.00                       $0.00
</span><span>average = ( 310.50 + 0.00 + 0.00)/3
              = $ 103.50
9)
clothes                          $0.00                        $0.00                     $75.00
average = (0.00 + 0.00 + 75.00)/3 
              = $ 25.00
</span><span>10)
car license fee              $0.00                    $120.90                       $0.00
average = (0.00 + 120.90 + 0.00)/3
              = $ 40.30
</span><span>11)
newspaper                    $0.00                        $0.00                     $45.00 
average = (0.00 + 0.00 + 45.00)/3
              = $ 15.00
</span><span>12)</span><span>movies                        $18.00                        $0.00                     $36.00 
average = (18 + 0.00 + 36.0)/3
              = $ 18.00
</span><span>13)
new car                     $100.00                    $100.00                   $100.00
average = (100 + 100 + 100)/3
              = $ 100.00
</span><span>14)
gasoline                      $80.00                      $70.00                     $75.00
average  = (80.00 + 70.00 + 75.00)
               = $ 75.00
</span><span>15)
car repairs                     $0.00                    $119.00                       $0.00
average = (0.00 + 119.0 + 0)/3
              = $ 39.67
</span><span>16)
miscellaneous             $64.50                      $59.25                     $72.50
average = (64.50 + 59.25 + 72.50)/3
              = 196.25/3
              = $ 65.42
</span><span>17)
savings                      $140.00                    $140.00                   $140.00
</span>average = ( 140 + 140 + 140)/3
              = $ 140.00
 
You might be interested in
PLEASE HELP ME ASAP ITS A EXAM
xz_007 [3.2K]
The first one should be the third option and the second one should be the first one.
6 0
3 years ago
What would be the correlation coefficient (r) of the following scatter plot?
luda_lava [24]

Answer:

-0.89 (i think)

Step-by-step explanation:

Since the graph seems to be going downwards from the right, it has a negative correlation. And since the data seems to be pretty close together, the correlation must be strong. That narrows the answer down to -0.89

If its wrong then i'm not a smart person, and it's -0.15

8 0
2 years ago
If g(x) = -4x + 5, find g(2x-1).
lilavasa [31]

Answer:

- 8x + 9

Step-by-step explanation:

To evaluate g(2x - 1) substitute x = 2x - 1 into g(x), that is

g(2x - 1)

= - 4(2x - 1) + 5 ← distribute parenthesis and simplify

= - 8x + 4 + 5

= - 8x + 9

8 0
3 years ago
Read 2 more answers
he owner of a local supermarket wants to estimate the difference between the average number of gallons of milk sold per day on w
stellarik [79]

Answer:

90% confidence interval is ( -149.114, -62.666   )

Step-by-step explanation:

Given the data in the question;

Sample 1                                Sample 2

x"₁ = 259.23                            x"₂ = 365.12

s₁  = 34.713                              s₂ = 48.297

n₁ = 5                                       n₂ = 10

With 90% confidence interval for μ₁ - μ₂ { using equal variance assumption }

significance level ∝ = 1 - 90% = 1 - 0.90 = 0.1

Since we are to assume that variance are equal and they are know, we will use pooled variance;

Degree of freedom DF = n₁ + n₂ - 2 = 5 + 10 - 2 = 13

Now, pooled estimate of variance will be;

S_p^2 = [ ( n₁ - 1 )s₁² + ( n₂ - 1)s₂² ] / [ ( n₁ - 1 ) + ( n₂ - 1 ) ]

we substitute

S_p^2 = [ ( 5 - 1 )(34.713)² + ( 10 - 1)(48.297)² ] / [ ( 5 - 1 ) + ( 10 - 1 ) ]

S_p^2 = [ ( 4 × 1204.9923) + ( 9 × 2332.6 ) ] / [  4 + 9 ]

S_p^2 = [ 4819.9692 + 20993.4 ] / [  13 ]

S_p^2 = 25813.3692 / 13

S_p^2 = 1985.64378

Now the Standard Error will be;

S_{x1-x2 = √[ ( S_p^2 / n₁ ) + ( S_p^2 / n₂ ) ]

we substitute

S_{x1-x2 = √[ ( 1985.64378 / 5 ) + ( 1985.64378 / 10 ) ]

S_{x1-x2 = √[ 397.128756 + 198.564378 ]

S_{x1-x2 = √595.693134

S_{x1-x2 = 24.4068

Critical Value = t_{\frac{\alpha }{2}, df = t_{0.05, df=13 = 1.771  { t-table }

So,

Margin of Error E =  t_{\frac{\alpha }{2}, df × [ ( S_p^2 / n₁ ) + ( S_p^2 / n₂ ) ]

we substitute

Margin of Error E = 1.771 × 24.4068

Margin of Error E = 43.224

Point Estimate = x₁ - x₂ = 259.23 - 365.12 = -105.89

So, Limits of 90% CI will be; x₁ - x₂ ± E

Lower Limit = x₁ - x₂ - E = -105.89 - 43.224 = -149.114

Upper Limit = x₁ - x₂ - E = -105.89 + 43.224 = -62.666

Therefore, 90% confidence interval is ( -149.114, -62.666   )

3 0
3 years ago
What is the value of the expression below when:
Inga [223]
Since we know the value for c and d we just plug them into the equation which will look like this. 6•5^2-5•4+8

Answer: 138
3 0
3 years ago
Other questions:
  • the area of a desktop is represented by x^2 - 49. find the dimensions of the desktop in terms of x. show work please.​
    15·1 answer
  • Find the product. -1/2y(2y 3 - 8) A) -y 4 + 4y B) y 4 + 4y C) -2y 3 + 4
    5·2 answers
  • which population will be larger after 30 years: population x that doubles it's self every year, or population y that increases b
    15·1 answer
  • The length of a rectangle is 16 inches ,and its area is (32+48)square inches . Factor the expression for the area .write an expr
    14·1 answer
  • What is the area of a triangle with a base of 2.4 cm and a height of 0.8 cm? A. 0.96 cm² B. 1.6 cm² C. 1.92 cm² D. 3.2 cm²
    9·2 answers
  • anonymous anonymous 3 years ago On October 2,1991 the Japanese yen was worth .0075 united states dollars. at that time, how much
    9·1 answer
  • If I have 18 pies and eat 13.67 percent of each one how much pie have I eaten?
    10·1 answer
  • What color is an orange​
    7·2 answers
  • What is the value of x
    10·1 answer
  • HELP ME OUT HERE 10 POINTS !
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!