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sergeinik [125]
3 years ago
10

If a proportional relationship is given by a description such as

Mathematics
1 answer:
-Dominant- [34]3 years ago
6 0

Answer:

unit rate = (22 1/2 ÷ 3 3/4) hours per day

= 45/2 ÷ 15/4

= 45/2 × 4/15

= 6 hours per day

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Help me solve this plz
Reptile [31]

Answer:

sorry but this photo is not clear

8 0
3 years ago
Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to o
Roman55 [17]

Answer:

Range = 11-2=9

\mu = \frac{2+3+4+5+6+7+8+9+10+11}{10}=6.5

\sigma^2 =8.25 \approx 8.3

\sigma = \sqrt{8.25}= 2.87 \approx 2.9

Step-by-step explanation:

Assuming this question: "Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given in the data. 2,3,4,5,6,7,8,9,10,11 "

Solution to the problem

The range is defined as Range = Max -Min and if we replace we got:

Range = 11-2=9

Now we can calculate the population mean with this formula:

\mu =\frac{\sum_{i=1}^n X_i}{N}

And if we replace we got:

\mu = \frac{2+3+4+5+6+7+8+9+10+11}{10}=6.5

The population variance is given by:

\sigma^2 = \frac{\sum_{i=1}^n (X_i -\mu)^2}{N}

And after replace we got: \sigma^2 =8.25 \approx 8.3

And the population standard deviation would be just the square root of the variance and we got:

\sigma = \sqrt{8.25}= 2.87 \approx 2.9

4 0
4 years ago
How many seconds are in 108 year please show work. Please don't copy from any website or source
UkoKoshka [18]

Answer:

3405888000 seconds

Step-by-step explanation:

108 times 365 years

39420

39420 times 24

946080

946080 times 60

56764800

56764800 times 60 seconds

3405888000 seconds

8 0
3 years ago
PLEASE HELP SMART PEOPLE! <br>This is add/subtract polynomials. <br>h(x)+g(x)<br>h(x)=6x^2+4x^4+7x​
luda_lava [24]

Given,

h(x) =  {6x}^{2}  +  {4x}^{4}  + 7x

g( x) =  {6x}^{2}  - 4x +  {3x}^{4}

Therefore,

h(x) + g(x)

( {6x}^{2}  +  {4x}^{4}  + 7x) + ({6x}^{2}  - 4x +  {3x}^{4})

{6x}^{2}  +  {4x}^{4}  + 7x + {6x}^{2}  - 4x +  {3x}^{4}

(4 {x}^{4}  + 3 {x}^{4} ) + ( {6x}^{2}  +  {6x}^{2} ) + (7x - 4x)

{7x}^{4}  +  {12x}^{2}  + 3x

4 0
3 years ago
There are 15 vacant units in Noor's apartment building. This represents 6% of the total number of units. How many units are in N
MaRussiya [10]
15/x = 6/100
6x=1500
x=250
6 0
3 years ago
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