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3 years ago

Pls help

Mathematics

1 answer:

Tatiana [17]3 years ago

5 0

Answer:

$- 39xy + 12 {y}^{2}$

Step-by-step explanation:

1) Simplify 6x × 2y to to 12xy.

$12xy - 3xy - 24xy \times 2 + 12 {y}^{2}$

2) Simplify 24xy × 2 to 48xy.

$12xy - 3xy - 48xy + 12 {y}^{2}$

3) Collect like terms.

$(12xy - 3xy - 48xy) + 12 {y}^{2}$

4) Simplify.

$- 39xy + 12 {y}^{2}$

Thus, The answer is -39xy + 12y².

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The following value 1.23456789 x 10-6 what is a answer?

Amiraneli [1.4K]

Answer 1:

1.23456789 × (10-6) = 4.93827156

Answer 2:

(1.23456789 × 10) - 6 = 6.3456789

Answer 3:

1.23456789 × $10^{-6}$ = 0.000000123456789

Hope this helped! :)

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2 years ago

Look at the image and please help out! I need an answer.

tresset_1 [31]

Answer:

4b<30

Step-by-step explanation:

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3 years ago

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3. + (-2) + (-24 )

OleMash [197]

Answer:

$\huge{ \boxed{ \bold{ \sf{ - 26}}}}$

<h3>☄ Question : Simplify</h3>

$\sf{ + ( - 2) + ( - 24)}$

<h3>☄ Step - by - step explanation : </h3>

$\sf{ + ( - 2) + ( - 24)}$

Remember : $\sf{( + ) \times ( - ) = ( - )}$

$\dashrightarrow{ \sf{ - 2 - 24}}$

Remember : The negative integers are always added but posses the negative ( - ) sign.

$\dashrightarrow{ \boxed{ \sf{ - 26}}}$

--------------------------------------------------------------

<h3>† Remember :</h3>

✒ Sign rules of addition and subtraction of integers :

The positive integers are always added but posses the positive ( + ) sign.
The negative integers are always added but posses the negative ( - ) sign.
The negative and positive integers are always subtracted but posses the sign of the bigger integer.

✒ Sign rules of multiplication and division :

$\sf{( + ) \times ( + ) = ( + )}$
$\sf{( + ) \times ( - ) = ( - )}$
$\sf{( - ) \times ( + ) = ( - ) }$
$\sf{( - ) \times ( - ) = ( + ) }$

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Hope I helped!

Have a wonderful time ! ツ

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3 years ago

Is the sum of 4.2 and the square root of 2 rational or irrational

andrew11 [14]

The correct answer is:

Irrational.

Explanation:

We are adding a rational number, 4.2, and an irrational number, √2.

Adding an irrational number to anything makes the sum irrational.

The only way to get a rational number from an irrational number is to multiply or divide. There is no way to rationalize an irrational number by adding or subtracting.

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4 years ago

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BlackZzzverrR [31]

Answer:

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Step-by-step explanation: