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3 years ago

ME AJUDEM PFV!!O valor da expressão (NA FOTO)simplificada é:

Mathematics

1 answer:

koban [17]3 years ago

7 0

D) 16.

Espero que esto ayude hermano.

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horrorfan [7]

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4 years ago

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If f(x)=-x^2+6x-1 and g(x) =3x^2-4x-1, find (f-g)(x)

asambeis [7]

Answer:

Step-by-step explanation:

Given,

$f(x)=-x^{2} +6x-1\\g(x)=3x^{2} -4x-1$

we know,

(f-g)(x)=f(x)-g(x)

So, here we get

(f-g)(x)

=f(x)-g(x)

= $-x^{2} +6x-1-(3x^{2} -4x-1)$

= $-x^{2} +6x-1-3x^{2} +4x+1$

= $-x^{2}-3x^{2} +6x+4x-1+1$

= $-4x^{2} +10x$

So, the answer is

$-4x^{2} +10x$

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3 years ago

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A coin is tossed three times. what is the probability of getting two heads and one tail?

Lera25 [3.4K]

If the order doesn't matter, then the probability is 37.5%
If it has to be head head tail, then the probability is 12.5%

If the order doesn't matter, the possible outcomes that have two heads and one tail are HHT, HTH, and THH. Since these all have a probability of 12.5% of occuring, the probability of any of them occuring is 37.5%

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Which expressions are equivalent to 4x^4-9x^2?

weeeeeb [17]

We can cosider this to be a difference of 2 squares so

4x^4 - 9x^2 = (2x^2 - 3x)(2x^2 + 3x) so D is one answer

also we could take x^2 out and get
x^2(4x^2 - 9) = C

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3 years ago

Fifteen percent of an employee's taxable income is collected each paycheck. Before taxes are removed from each paycheck,

aleksklad [387]

Answer:

y = x [1- $\frac{15}{100}$ ]

Step-by-step explanation:

If the variable x represents the employee's pay before tax-exempt expenses and taxes are removed and y variable represents the employee's take-home pay after these deductions and if fifteen percent of an employee's taxable income is collected each paycheck, then y is given by

y = x [1- $\frac{15}{100}$ ]. (Answer)

For, example, an employee's payment is deducted by $350 at the rate of 15% tax and other deduction.

Therefore, $\frac{15x}{100}=350$ , ⇒ x = $2333.33 is the before tax income of the person.

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