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2 years ago

Simplify the polynomial. Then find its value for the given value of the variable.

Mathematics

1 answer:

zloy xaker [14]2 years ago

4 0

Answer:

simplified: xy²
value: 4

Step-by-step explanation:

The polynomial is simplified by combining like terms. Like terms are identified more easily if the variables in each term are written in the same order. We usually like to use alphabetical order. Two of the like terms have opposite coefficients, so they cancel. The result is ...

(3 1/2 -2 1/2)xy² +(-2 4/5 +2 4/5)x²y

= xy² . . . . simplified expression

For x = 1, y = -2, the value of the expression is ...

(1)(-2)² = 4

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Answer:

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

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Answer:

5,000

Step-by-step explanation:

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3 years ago

Four percent of Jennie's skin cells were burned when she escaped from a fire. If 3.7 x 10^10 of her skin cells were burned then,

baherus [9]

Answer:

355.2

Step-by-step explanation:

Given:

Four percent of Jennie's skin cells were burned

Total skin cells having Jennie = 3.7 x 10^10

= $3.7\times10\times10 = 370$

To find:

How man skin cells were not burned ?

Solution:

Total skin cells having Jennie = 370

Percent of Jennie's skin cells were burned = 4%

Skin cells burned from a fire = $370 \ of 4\%$

= $370\times\frac{4}{100} =\frac{1480}{100}$

= $14.8$

Remaining skin cells which not burned = 370 - 14.8 = 355.2

Therefore, 355.2 skin cells were not burned.

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3 years ago

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Step-by-step explanation:

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3 years ago