3 years ago

Can anybody help ?????????????????????

Mathematics

1 answer:

ycow [4]3 years ago

3 0

Answer:

i think its y= -3...ya im pretty sure

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Factorize x^2/16+xy+4y^2

lisov135 [29]

Answer:

$\frac{x^2}{16} +xy+4y^2$ can be factored out as: $(\frac{x}{4} +2\,y)^2$

Step-by-step explanation:

Recall the formula for the perfect square of a binomial :

$(a+b)^2=a^2+2ab+b^2$

Now, let's try to identify the values of $a$ and $b$ in the given trinomial.

Notice that the first term and the last term are perfect squares:

$\frac{x^2}{16} = (\frac{x}{4} )^2\\4y^2=(2y)^2$

so, we can investigate what the middle term would be considering our $a=\frac{x}{4}$ , and $b=2y$ :

$2\,a\,b=2\,(\frac{x}{4}) \,(2\,y)=x\,y$

Therefore, the calculated middle term agrees with the given middle term, so we can conclude that this trinomial is the perfect square of the binomial:

$(\frac{x}{4} +2\,y)^2$

4 0

3 years ago

X+x+25=180 please help me

anygoal [31]

X+ 77.5 because if you subtract 25 from 180 you get 155. Then divide 155 by 2 and you get 77.5

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Question 9 The value of y varies directly with x. When y = 75, x= What is the value of y when x is 21?

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Step-by-step explanation:

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Alborosie

Is there more to this question?

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Help ASAP please<br> I am desperate

snow_lady [41]

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I think the first one is 18 and I think the second one is the 3rd one

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