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3 years ago

2/12 in simplest form

Mathematics

2 answers:

lisabon 2012 [21]3 years ago

6 0

It's 1/6 because if you divide 12 by 2 and 2 by 2 it would be 1/6

LuckyWell [14K]3 years ago

5 0

$\frac{1}{6}$ . 2 is the GCF of 2 and 12 and if you divided 2 by 2, you get 1. 12 divided by 2, 6. Therefore, $\frac{1}{6}$ is the simplest form of $\frac{2}{12}$

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What is the value of x in the equation 1/5x-2/3 y = 30, when y = 15?

MariettaO [177]

equation 1/5x-2/3 y = 30, when y = 15?
so
 1/5x-2/3 (15) = 30
1/5x - 10 = 30
1/5x = 40
x = 40(5)
x = 200

answer

D.200

5 0

4 years ago

Ingram Co. manufactures office furniture. During the most productive month of the year, 3,500 desks were manufactured at a total

Lorico [155]

The cost of manufacturing $x$ units is

$C=ax+b$ , where $a$ cost per unit and $b$ fixed cost.

Given that

$3500a+b=84400\\ 1100a+b=46000$

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4 0

3 years ago

Read 2 more answers

Matthew bought 45 oranges 3/5 of them to make orange juice how many oranges does he have left. Thx

KengaRu [80]

Answer:

Step-by-step explanation:

First find out how many oranges he used to make the orange juice.

3/5 = 0.6

(45)(0.6)

He used 27 oranges to make the juice.

Now we can figure out how many oranges he has left.

45 - 27

Matthew has 18 oranges left.

Hope this helps!

7 0

3 years ago

A population has a standard deviation of 80. A random sample of 400 items from this population is selected. The sample mean is d

Helga [31]

Answer:

$ME= 1.8808 * \frac{80}{\sqrt{400}} =7.5232$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma =80$ represent the population standard deviation

n=400 represent the sample size

Solution to the problem

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

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

Since the Confidence is 0.94 or 94%, the value of $\alpha=0.06$ and $\alpha/2 =0.03$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.03,0,1)".And we see that $z_{\alpha/2}=1.8808$