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Gelneren [198K]
3 years ago
11

-1/3x-1/6=2/9 solution

Mathematics
1 answer:
Grace [21]3 years ago
4 0

Answer:

-1  1/6

Step-by-step explanation:

Use a common denominator first to convert all the fractions so they can be easily added or subtracted.

Common denominator is 18 since 3, 6, and 9 can all evenly divide into 18

1/3 = 6/18

1/6 = 3/18

2/9 = 4/18

So now you have

-6/18x - 3/18 = 4/18

add 6/18x to both sides so you can make the number with the variable positive

6/18x - 6/18x - 3/18 = 4/18 + 6/18x simplifies to - 3/18 = 4/18 + 6/18x

subtract 4/18 from both sides

- 3/18 - 4/18 = 4/18 - 4/18 + 6/18x simplifies to - 7/18 = 6/18x

Divide both sides by 6/18 so x is alone on the one side

( - 7/18) / ( 6/18) = ( 6/18x) / ( 6/18)  simplifies to ( - 7/18) / ( 6/18) = x

When you divide a fraction by a fraction, the bottom fraction gets flipped over then you multiply the two new fractions straight across

so the new equation looks like this

- 7/18 times 18/6 and you multiply -7 x 18 = -126 and the bottom is 18 times 6 = 108    you now have  -126/108

x = -126/108  which simplifies to - 1  18/108  which can still be simplified more to -1  1 / 6   since 108 can be divided by 18 that gives you 6.

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describe the difference between simple and compound interest and which type of interest earns money more quickly
vovangra [49]
With simple interest, interest is calculated based on the original deposit only.  The amount of interest earned in 1 year does not affect the amount of interest earned in following years.

With compound interest, interest is "compounded" or added a specific number of times per year.  After the interest is added, the next time it is calculated, the amount is based on the total amount in the account.

For example, if we deposit $100 at 2% compound interest that is compounded yearly, the first year our interest would be 0.02(100) = $2.  Before the interest is calculated the next year, this $2 is added to the account, making it $102.  This is the value we use to calculate the next year's interest:  0.02(102) = $2.04.

Because of this, compound interest grows more quickly.
5 0
3 years ago
By rounding to 1 significant figure, estimate<br> 542.04 x 1.88=
Verizon [17]

Answer:

542.04 × 1.88 = 1020

Facts about 1,020

Sig Figs

3

1020

Decimals

0

Scientific Notation

1.02 × 103

E-Notation

1.02e+3

Words

one thousand twenty

4 0
3 years ago
Two companies working together can clear a parcel of land in 27 hours. Working alone, it would take Company a 2 hours longer to
algol13

Answer:

53 hours

Step-by-step explanation:

If A is the time it takes Company A, and B is the time it takes Company B, then:

1/27 = 1/A + 1/B

A = B + 2

Substitute and solve:

1/27 = 1/(B + 2) + 1/B

1/27 = (B + B + 2) / (B (B + 2))

1/27 = (2B + 2) / (B² + 2B)

27 (2B + 2) = B² + 2B

54B + 54 = B² + 2B

0 = B² − 52B − 54

B = [ -(-52) ± √((-52)² − 4(1)(-54)) ] / 2(1)

B = (52 ± √2920) / 2

B ≈ 53.0

It would take Company B approximately 53 hours.

5 0
3 years ago
You have 10 liters of juice that is 40% juice and 60% water. You want the mixture to be 70% juice and 30% water. How many liters
damaskus [11]

Answer:

14 liters

Step-by-step explanation:

10 liters : 4 liters of juice and 6 liters of water

4/10 of juice and 6/10 of water

make it to 70% of juice and 30% of water

add 14 liters of juice

14/20=70% of juice

6/20=30% of water

4 0
4 years ago
There are twelve cards labeled from 1 to 12 in a box. A card is randomly drawn from the box.
CaHeK987 [17]
The answer is C, 2/3. 1, 3, 5, 6, 7, 9, 11, and 12 are possible draws. 8/12 is equal to 2/3!
6 0
4 years ago
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