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3 years ago

The line for which equation has negative slope?

Mathematics

1 answer:

zhenek [66]3 years ago

3 0

Answer:

Step-by-step explanation:

To have a negative slope, <em>m</em> has to be negative. Any negative slope would show up as a negative coefficient in front of <em>x</em>.

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Allisa [31]

Answer:

The answer is, The fastest speed is 3/4 mile in 1/8 hour

Step-by-step explanation:

the answer i have = 6miles per hour and the rest of the answers are lower than that.

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2 years ago

The metric system is based on multiples of 100. Please select the best answer from the choices provided A.True B.False

Otrada [13]

Answer:

true

Step-by-step explanation:

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3 years ago

If one line has a slope of 2/3, then the slope of a line parallel to it would be?

ipn [44]

-3/2

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3 years ago

Last week rob ran 19 miles more than amy. Rob ran 33 miles. How many miles did amy run?

Elanso [62]

Answer:

Step-by-step explanation:

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3 years ago

Find the zeros of y = x2 – 6x – 4 by completing the square.

katrin [286]

Answer:

The solutions to the quadratic equations are:

$x=\sqrt{13}+3,\:x=-\sqrt{13}+3$

Step-by-step explanation:

Given the function

$y\:=\:x^2\:-\:6x\:-\:4$

substitute y = 0 in the equation to determine the zeros

$0\:=\:x^2\:-\:6x\:-\:4$

Switch sides

$x^2-6x-4=0$

Add 4 to both sides

$x^2-6x-4+4=0+4$

Simplify

$x^2-6x=4$

Rewrite in the form (x+a)² = b

But, in order to rewrite in the form x²+2ax+a²

Solve for 'a'

2ax = -6x

a = -3

so add a² = (-3)² to both sides

$x^2-6x+\left(-3\right)^2=4+\left(-3\right)^2$

$x^2-6x+\left(-3\right)^2=13$

Apply perfect square formula: (a-b)² = a²-2ab+b²

$\left(x-3\right)^2=13$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x-3=\sqrt{13}$

Add 3 to both sides

$x-3+3=\sqrt{13}+3$

Simplify

$x=\sqrt{13}+3$

now solving

$x-3=-\sqrt{13}$

Add 3 to both sides

$x-3+3=-\sqrt{13}+3$

Simplify

$x=-\sqrt{13}+3$

Thus, the solutions to the quadratic equations are:

$x=\sqrt{13}+3,\:x=-\sqrt{13}+3$

4 0

3 years ago