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Nady [450]
3 years ago
10

Which is equivalent?

Mathematics
1 answer:
olga_2 [115]3 years ago
8 0

Answer:

A

Step-by-step explanation:

Given

\frac{x}{\sqrt{2} }

Multiply numerator/ denominator by \sqrt{2} to rationalise the denominator

= \frac{x\sqrt{2} }{\sqrt{2}(\sqrt{2})  }

= \frac{x\sqrt{2} }{2} → A

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How do you do this question?
VikaD [51]

Answer:

the answer is 4 of it will help you

8 0
3 years ago
36. Mrs. Smith will install a ceiling fan in cach room of
otez555 [7]

Answer:

4353.5

Step-by-step explanation:

2 bedrooms and a living room, sorry I forgot to add that in, there's also 3 small windows and a large one

3 rooms

552*3 = 1656

small window = 539.50 * 3 = 1618.50

Large window - 2*539.50 = 1079

1656+1618.5+1079=4353.5

5 0
3 years ago
Complete the ratio<br> 4 : 32 = 1 : ?
zavuch27 [327]

Answer:

1: 8

Step-by-step explanation:

4 : 32

Divide both the left and right side by 4

4/4 =1

32/4 = 8

4:32  becomes  1:8

6 0
3 years ago
Read 2 more answers
The CEO of a large corporation asks his Human Resource (HR) director to study absenteeism among its executive-level managers at
Fynjy0 [20]

Answer:

Following are the answer to this question:

Step-by-step explanation:

Given:

n = 30 is the sample size.  

The mean  \bar X = 7.3 days.  

The standard deviation = 6.2 days.  

df = n-1  

     = 30-1 \\      =29

The importance level is \alpha = 0.10  

The table value is calculated with a function excel 2010:

= tinv (\ probility, \ freedom \ level) \\= tinv (0.10,29) \\ =1.699127\\ =  t_{al(2x-1)}= 1.699127

The method for calculating the trust interval of 90 percent for the true population means is:

Formula:

\bar X - t_{al 2,x-1} \frac{S}{\sqrt{n}} \leq \mu \leq \bar X+ t_{al 2,x-1}   \frac{S}{\sqrt{n}}

=\bar X - t_{0.5, 29} \frac{6.2}{\sqrt{30}} \leq \mu \leq \bar X+ t_{0.5, 29}   \frac{6.2}{\sqrt{30}}\\\\=7.3 -1.699127 \frac{6.2}{\sqrt{30}}\leq \mu \leq7.3 +1.699127 \frac{6.2}{\sqrt{30}}\\\\=7.3 -1.699127 (1.13196)\leq \mu \leq7.3 +1.699127  (1.13196) \\\\=5.37 \leq \mu  \leq 9.22 \\

It can rest assured that the true people needs that middle managers are unavailable from 5,37 to 9,23 during the years.

7 0
3 years ago
1) a + b + a +b=
mestny [16]

Answer:

3728827272-28277372

c

293728272

e

38838373828737

l

83826382

o

82372882

a

283638272

d

726372826

v

282882

e

2928292282828

r

282828272727272772

t

727263826282728

y

3 0
3 years ago
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