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3 years ago

2(x-4)=6x+4 solve plz

Mathematics

2 answers:

ahrayia [7]3 years ago

8 0

The answer is x = -3

Andrew [12]3 years ago

6 0

Answer:

I think it would be

12x-16x-24x-16

Step-by-step explanation:

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A coin contains 1.25 grams of nickel and 3.75 grams of copper, for a total weight of 5 grams. What percentage of the metal in th

otez555 [7]

So,

To find the percentage that the copper comprises, just divide the amount of copper by the total amount of metal in the coin. In this case, we will change the denominator so that it is 100, which can easily be converted into a percentage, which is really just a fraction out of 100.

$\frac{3.75}{5} = \frac{7.50}{10} = \frac{75}{100}$

75%

75% of the metal in the coin is copper.

7 0

3 years ago

Convert 7,200 in scientific notation

Nitella [24]

Answer:

7.2*10^3.

7,200 in scientific notation, is 7.2*10^3

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3 years ago

What is 7/20 in decimals

FromTheMoon [43]

Answer:

0.35 :)

Step-by-step explanation:

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3 years ago

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Factor this polynomial completely.<br> x^2-8x+12

Sphinxa [80]

Answer:

(x - 2) (x - 6)

Step-by-step explanation:

Factor the following:

x^2 - 8 x + 12

The factors of 12 that sum to -8 are -2 and -6. So, x^2 - 8 x + 12 = (x - 2) (x - 6):

Answer: (x - 2) (x - 6)

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3 years ago

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1. A bag contains rubber bands with lengths that are normally distributed with a mean of 6 cm of length, and a standard deviatio

romanna [79]

Roughly 1.7 percent of the bands are shorter than 3cm. We calculate the z score of the data point in standard distribution. By definition of z score, we use score minus mean divided by standard deviation. z=(3-6)/1.5=-2. A z score of -2 corresponds to approximately 1.7%, in other words, roughly 1.7 percent of data is less than 3cm.

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3 years ago