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Lera25 [3.4K]
2 years ago
15

Which function below has a Domain of all Real Numbers (i.e. (-∞,∞))

Mathematics
1 answer:
masha68 [24]2 years ago
7 0

Answer:

all have domain of real numbers

Step-by-step explanation:

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Please answer number 15 I’ll give brainliest thanks!
kumpel [21]

Answer:

C

Step-by-step explanation:

i belive it is C because if you look at it your just multiplying by 4 hope this helps!!! :D

6 0
2 years ago
Calculate the averages for each category for the three-month period. category jan. feb. mar. average wages $2,100.00 $2,300.00 $
yan [13]
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
 
3 0
3 years ago
Hurry please!
n200080 [17]

Answer:

A. the rational number system is closed under addition, but not multiplication

Step-by-step explanation:

may i pleaseee have brainliest

4 0
3 years ago
A teacher's age is 6years greater then 2 times a students age.a principals age is 10 years greater than 3 times the students age
snow_tiger [21]

Answer: 4x + 5

Step-by-step explanation:

6 0
3 years ago
If a spherical ball is enlarged so that its surface area is 9 times greater than its original surface area, then the original ra
luda_lava [24]
The surface area of a sphere is A = 4 \pi r^{2} and if the original S.A was is enlarged to have it 9 times greater, the radius would be multiplied by 3 or roughly 2.99626 rounded off to 3.0. 

For example, let us assign values.
Let A=90

A= 90*9 = 810

90 = 4 \pi   r^{2} &#10;&#10;    and    810 = 4 \pi  r ^{2}

the first r is 2.68 and the second r is 8.03

then, \frac{8.03}{2.68} = 2.99626  or rounded off to 3.
6 0
3 years ago
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