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BaLLatris [955]
3 years ago
5

Introduction to addition or subtraction of fractions with different denominator 3/4-1/8

Mathematics
2 answers:
ankoles [38]3 years ago
7 0
3/4(2/2) -1/8
6/8 -1/8
5/8
chubhunter [2.5K]3 years ago
4 0
First of all, find the lowest common multiple of 4 and 8. The lowest common multiple is 8. That will be;
8 divided by 4 times 3= 6
8 divided by 8 times 1= 1
So we have;
6-1/8
5/8
Hope I helped. Good luck
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Vinil7 [7]

Answer:

Now we have everything in order to replace into formula (1):

18-2.262\frac{2.75}{\sqrt{10}}=16.03    

18+2.262\frac{2.75}{\sqrt{10}}=19.97    

Step-by-step explanation:

Information given

\bar X=18 represent the sample mean

\mu population mean (variable of interest)

s=2.75 represent the sample standard deviation

n=10 represent the sample size  

Confidence interval

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom are given by:

df=n-1=10-1=9

The Confidence is 0.90 or 90%, the significance is \alpha=0.1 and \alpha/2 =0.05, and the critical vaue would be t_{\alpha/2}=2.262

Now we have everything in order to replace into formula (1):

18-2.262\frac{2.75}{\sqrt{10}}=16.03    

18+2.262\frac{2.75}{\sqrt{10}}=19.97    

5 0
3 years ago
Hellppppppp with this twoooooooo
liberstina [14]
15.

0.20*x = 0.01*x + 38 => 0.19*x = 38 =>( 19/100 )*x = 38 => x = 3800/19 => x = 200.
6 0
3 years ago
Please help me with problem 2 of a math problem
nikklg [1K]

Answer:

C, 7 1/2

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
What is the volume (in cubic units) of a sphere with a radius of 18 units? Assume that π = 3.14 and round your answer to the nea
Nataly [62]

Answer:

The volume of sphere is 24416.64\ cm^3.

Step-by-step explanation:

We have,

Radius of a sphere is 18 units.

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The formula of the volume of sphere in terms of radius is given by :

V=\dfrac{4}{3}\pi r^3

Plugging all values in above formula

V=\dfrac{4}{3}\times 3.14\times (18)^3\\\\V=24416.64\ cm^3

So, the volume of sphere is 24416.64\ cm^3.

7 0
3 years ago
Y-1=-2(x+3) in standard form
romanna [79]

Answer:

2x + y + 5 = 0

Step-by-step explanation:

y − 1 = -2 (x + 3)

y − 1 = -2x − 6

2x + y + 5 = 0

4 0
3 years ago
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