3 years ago

Josiah kept track of how many songs of each genre were played in an hour from his MP3 player. The counts are

Mathematics

1 answer:

Alla [95]3 years ago

5 0

sample 1=1 rock=1,200songs

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179 students in 3rd grade, 189 4th graders, and 209 5th graders. 577 students total!

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3 years ago

What is the value of -32+(-4+7)(2)?<br> -28<br> -3<br> 3<br> 15

I am Lyosha [343]

Answer:

-26

Step-by-step explanation:

-32+3×2
-32+6
-26

By using BODMAS, any of the answers given is correct!

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3 years ago

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What two rational expressions sum to 3x+4/x^2-6x+5?

Lubov Fominskaja [6]

Answer:

$\frac{3x+4}{x^2-6x+5}=\frac{-7}{4(x-1)} +\frac{19}{4(x-5)}$

Step-by-step explanation:

The given rational expression is:

$\frac{3x+4}{x^{2}-6x+5} = \frac{3x+4}{(x-1)(x-5)}$

We can use concept of Partial Fractions to solve this problem. Let,

$\frac{3x+4}{(x-1)(x-5)}=\frac{A}{x-1} +\frac{B}{x-5}$

Multiplying both sides by (x - 1)(x - 5), we get:

$3x+4=A(x-5)+B(x-1)$

Substituting x = 5, we get:

$3(5)+4=A(5-5)+B(5-1)\\\\ 15+4=0+4B\\\\ 19=4B\\\\ B=\frac{19}{4}$

Substituting x = 1, we get:

$3(1)+4=A(1-5)+B(1-1)\\\\ 7=-4A\\\\ A=-\frac{7}{4}$

Substituting the value of A and B, back in the original equation, we get:

$\frac{3x+4}{x^2-6x+5}=\frac{-7}{4(x-1)} +\frac{19}{4(x-5)}$

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3 years ago

Can I get help please

WITCHER [35]

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sorry you cant get help but you can help me!

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Step-by-step explanation:

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3 years ago

How many roots does the following equation have? f(x) = 4x5 - 16x4 + 17x3 - 19x2 + 13x - 3 = 0

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It has 5 roots. You can determine this by the degree of the polynomial

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3 years ago