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Oksanka [162]
3 years ago
8

3x²=12 extracting square roots​

Mathematics
1 answer:
ivann1987 [24]3 years ago
3 0

Answer:

x = ± 2

Step-by-step explanation:

Given

3x² = 12 ( divide both sides by 3 )

x² = 4 ( take the square root of both sides )

x = ± \sqrt{4} = ± 2

You might be interested in
-x^2 = - 36 (solve using inverse operations)
Oksanka [162]

Answer:

x = ±6

Step-by-step explanation:

-x^2 = - 36

Divide each side by -1

x^2 = 36

Take the square root of each side

sqrt(x^2) = sqrt(36)

x = ±6

8 0
3 years ago
A certain CD-ROM disk can store approximately 6.0 × 102 megabytes of information, where 106 bytes = 1 megabyte. If an average wo
klemol [59]

Answer: A. 4.3\times10^7

Step-by-step explanation:

Given : A certain CD-ROM disk can store approximately 6.0 \times 10^2  megabytes of information.

1 megabyte = 10^6 bytes

Then, The storage capacity of CD-ROM disk will be :

10^6\times 6.0 \times 10^2=6\times10^{6+2}=6\times10^8  

If an average word requires 14 bytes of storage, then the number of words can be stored :-

\dfrac{6\times10^8}{14}=0.428571428571\times10^8\approx0.43\times10^8=4.3\times10^7

Hence,  number of words can be stored = 4.3\times10^7

4 0
3 years ago
The scale of a map is 1cm:12 km. find the actual distance for 12cm
anzhelika [568]
This is simply a question about ratios. This ratio means that for every 1 cm on the map, there are 12 km in actuality. You can set this problem up in fractions:

1 cm           12 cm
--------   =   ----------
12 km             x

To solve for x, we cross-multiply, for the moment ignoring units. Remember, your answer will be in km.

1*x=12*12

x=144

If x=144, then for 12 cm, there are 144 km.


6 0
4 years ago
[URGENT] (25 points) Ryan randomly drew a marble out of a bag of marbles, then put it back. He did
Alenkasestr [34]

Answer:

Unpredictable

Step-by-step explanation:

Cuz if u look at it it is also random and u cant predict a random thing, so its quite simply unpredictable

4 0
3 years ago
Please help me out :)
Ainat [17]
The answer is 36.

You subtract or decrease the number by 8 every time.
6 0
3 years ago
Read 2 more answers
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