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3 years ago

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):

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

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

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3 years ago

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liberstina [14]

15.

0.20*x = 0.01*x + 38 => 0.19*x = 38 =>( 19/100 )*x = 38 => x = 3800/19 => x = 200.

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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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3 years ago

Read 2 more answers

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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.

It is required to find the volume of sphere.

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 $24416.64\ cm^3$ .

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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

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3 years ago