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Sidana [21]
3 years ago
13

What is the square route of 30

Mathematics
2 answers:
rjkz [21]3 years ago
4 0
The answer is 5.477225575.... or 5.5 if you want the simplified ansewer
aniked [119]3 years ago
3 0
The answer is 5.5 rounded to 1 dp
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Two competing headache remedies claim to give fast-acting relief. An experiment was performed to compare the mean lengths of tim
DaniilM [7]

Answer:

t = 0.875

Step-by-step explanation:

Given

<u>Brand A</u>            <u>Brand B</u>

n_ 1= 12               n_2 = 12

\bar x_1 = 21.8            \bar x_2 = 18.9

\sigma_1 = 8.7              \sigma_2 = 7.5

Required

Determine the test statistic (t)

This is calculated as:

t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} +  \frac{1}{n_2}}}

Calculate s using:

s = \sqrt{\frac{(n_1-1)*\sigma_1^2+(n_2-1)*\sigma_2^2}{n_1+n_2-2}}

The equation becomes:

s = \sqrt{\frac{(12-1)*8.7^2+(12-1)*7.5^2}{12+12-2}}

s = \sqrt{\frac{1451.34}{22}}

s = \sqrt{65.97}

s = 8.12

So:

t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} +  \frac{1}{n_2}}}

t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{12} + \frac{1}{12}}}

t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{6}}}

t = \frac{21.8 - 18.9}{8.12 * 0.408}}

t = \frac{2.9}{3.31296}}

t = 0.875

3 0
3 years ago
HELP!!!
Reptile [31]

Answer:

(a) $ 30000 + 1500 t

(b) $ 52500

Step-by-step explanation:

Initial profit = # 30,000

Profit increases every year by 5 %.

(a) Let the profit after t year is

P = $ 30,000 + 5% of 30,000 t  = $ 30000 + $ 1500 t

(b) t = 15 years

P = $ 30000 + $ 1500 x 15 = $ 52500  

5 0
3 years ago
Plz help me I have know clue
masya89 [10]
The figure is called an Acute Triangle. The Area is 199.96 centimeters squared. The perimeter (or circumference) is 68.
8 0
3 years ago
A phone carrier charges an extra fee if a customer uses more than 700 minutes each month. Karina has already used 200 minutes th
garik1379 [7]

Answer:third one

Step-by-step explanation:

3 0
4 years ago
Please help, I need this quickly. Fairly easy, help pleasee
ahrayia [7]
-4x-3y-9=0
||      m1 = - ( - 4)/-3= - 4/3
_|_   m2  = -1/m1= 3/4

2x+4y-3=0
 ||     m1= -2/4= -1/2
_|_   m2= 2

12x-y-17=0
 ||     m1= -12/-1=12
  _|_ m2 = -1/12

x-y=0
||    m1= -1/-1=1
_|_ m2= -1

8x - 3y - 2=0
||     m1= -8/-3= 8/3
 _|_ m2 = -3/8

-2x + y - 5=0
||    m1= -(-2)/1=2
_|_ m2= -1/2



3 0
4 years ago
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