3 years ago

identify the slope of each line a: b: c: d: pls

Mathematics

1 answer:

Phoenix [80]3 years ago

3 0

A) -1/2
B) -2
C) 2
D) 1/2

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Which are the solutions of x2 = 19x + 1?

Finger [1]

Answer:

$(\frac{19-\sqrt{365}} {2},\frac{19+\sqrt{365}} {2})$

Step-by-step explanation:

we have

$x^2=19x+1$

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-x^{2}-19x-1=0$

$a=1\\b=-19\\c=-1$

substitute in the formula

$x=\frac{-(-19)\pm\sqrt{-19^{2}-4(1)(-1)}} {2(1)}$

$x=\frac{19\pm\sqrt{365}} {2}$

$x=\frac{19+\sqrt{365}} {2}$

$x=\frac{19-\sqrt{365}} {2}$

$(\frac{19-\sqrt{365}} {2},\frac{19+\sqrt{365}} {2})$

therefore

StartFraction 19 minus StartRoot 365 EndRoot Over 2 EndFraction comma StartFraction 19 + StartRoot 365 EndRoot Over 2 EndFraction

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3 years ago

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X / -9 equal -4 minus parentheses -11 answer x equal

miss Akunina [59]

Do you mean x/-9=(-4)-(-11)x?

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With a sample size of 200 adults what is probability that more than 35% have high blood pressure

ikadub [295]

Answer:

Step-by-step explanation:

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Multiply and simplify if possible. sqrt 5x(sqrt x-5 sqrt 5)

RSB [31]

Making the assumption that your problem looks like this,
$\sqrt{5x}(\sqrt{x}-5\sqrt{5})$

we use the distributive property to multiply:
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Which is a factor pair of 72? A) 12,6 B) 14,5 C)23,4 D)24,2

scoundrel [369]

Answer:

the answer is A) 12,6. .

Step-by-step explanation:

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