3 years ago

Lol help again this is too hard

Mathematics

1 answer:

dezoksy [38]3 years ago

5 0

Answer:

1/6

Step-by-step explanation:

there are 6 faces on a die if you a roll a die the chance of getting a 2 or 5 is 1/6

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Partial fraction decomposition<br> 20x+9/25x^2+20x+4

ozzi

Step-by-step explanation:

We have

$\frac{20x + 9}{25 {x}^{2} + 20x + 4 }$

Let's factor the denomiator first,

the denomaitor is a perfect square so we get

$\frac{20x + 9}{(5x + 2) {}^{2} }$

Now, we must think of two fractions that

$\frac{a}{(5x + 2) {}^{2} } + \frac{b}{5x + 2}$

We use a perfect square term for one fraction, then a linear one for the next, because if we set both of the denomiator to the same factor, we would get a inconsistent system.

So right now, we have

$\frac{a}{(5x + 2) { }^{2} } + \frac{b}{5x + 2} = \frac{20x +9 }{25 {x}^{2} + 20x + 4 }$

$a + (5x + 2)b = 20x + 9$

$5b (x)= 20$

$a + 2b = 9$

$b = 4$

so that means that a is

$a + (2)(4) = 9$

$a + 8 = 9$

$a = 1$

So our equation is

$\frac{1}{(5x + 2) {}^{2} } + \frac{4}{5x + 2}$

6 0

2 years ago

The square tile has an area of 324 square inches. What is the perimeter

solniwko [45]

Square root of 324 = 18 inches.

Perimeter = 18 inches x 4 = 72 inches.

18 times 4 because each side of square tile equals to 18 inches and there's 4 sides.

The answer is 72 inches.

Hope this helps.

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3 years ago

A delivery person uses a service elevator to bring books up to an office the delivery person 160lb and each box of books weighs

Gre4nikov [31]

1450, I think you just have to add up

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3 years ago

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Sami made $23,400 last year in income from his job. He worked 30 hours per week and worked all 52 weeks of the year. What was hi

Blizzard [7]

15 per hour possibly

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