3 years ago

What should be added to 7 4/15 to get 8 2/5

Mathematics

1 answer:

N76 [4]3 years ago

8 0

Answer:

17+(2+3)/5 = 17+1 = 18 or 10

Step-by-step explanation:

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2 years ago

The polynomial p(x)=x^3-19x-30 has a known factor of (x+2)

riadik2000 [5.3K]

Answer:

(x+2) (x+3) (x-5)

Step-by-step explanation:

x³-19x-30 = (x+2) (x²+ax-15) ... x³=x*(1*x²) while -30= (2)*(-15)

x³ + 0*x² - 19x -30 = x³ + (2+a)x² + (2a-15)x -30

2+a = 0

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x³-19x-30 = (x+2) (x²-2x-15) = (x+2) (x+3) (x-5)

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3 years ago

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1hour and 17 minutes

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Given the two points what is the slope of the line? (4,2) (10.4)

zlopas [31]

$m = \frac{y2-y1}{x2-x1}\\ m=\frac{4-2}{10-4} \\m = \frac{2}{6} \\\\m=\frac{1}{3}$

Therefore, the slope of the line is 1/3. In case if you want the equation too.

$y=mx+b\\y=\frac{1}{3}x+b\\ 2=\frac{1}{3}(4)+b\\ 2=\frac{4}{3}+b\\ b=-\frac{4}{3}+2\\ b=-\frac{4}{3} +\frac{6}{3}\\ b=\frac{2}{3}$

Therefore, the equation is y=1/3x+2/3

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3 years ago

What should be added to 7 4/15 to get 8 2/5​

What should be added to 7 4/15 to get 8 2/5