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3 years ago

Which of the following lines is perpendicular to y=-2x+3?

Mathematics

1 answer:

Ivahew [28]3 years ago

7 0

Answer:

See explanation

Step-by-step explanation:

The given line has equation:

$y=-2x + 3$

Compare to the general slope-intercept form: y=mx+c

This implies that m=-2 is the slope of the given line.

The slope of all lines perpendicular to the given line is the negative reciprocal of -2.

This implies that the slope of any line perpendicular to y=-2x+3 is

$\frac{1}{2}$

Now look through the options and choose the equation that is of the form:

$y = \frac{1}{2} x + \boxed { whatever\: \: constant }$

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Mr james has cylindeical brakes measure 4 inches in diameter and are 9 inches high what is the value contain within the brakes

ra1l [238]

Answer:I think you have to multiply them

Step-by-step explanation:

So 4 times 9= 36

8 0

3 years ago

Help me solve 3 and 4 please

Leni [432]

Answer: Number 3 : 20/21

Number 4: 1/6

4 0

3 years ago

Which of the equations below could be the equation of this parabola?

nirvana33 [79]

Answer:

$y=-4x^2$ is the equation of this parabola.

Step-by-step explanation:

Let us consider the equation

$y=-4x^2$

$\mathrm{Domain\:of\:}\:-4x^2\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:$

$\mathrm{Range\:of\:}-4x^2:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\le \:0\:\\ \:\mathrm{Interval\:Notation:}&\:(-\infty \:,\:0]\end{bmatrix}$

$\mathrm{Axis\:interception\:points\:of}\:-4x^2:\quad \mathrm{X\:Intercepts}:\:\left(0,\:0\right),\:\mathrm{Y\:Intercepts}:\:\left(0,\:0\right)$

$\mathrm{The\:vertex\:of\:an\:up-down\:facing\:parabola\:of\:the\:form}\:y=a\left(x-m\right)\left(x-n\right)$

$\mathrm{is\:the\:average\:of\:the\:zeros}\:x_v=\frac{m+n}{2}$

$y=-4x^2$

$\mathrm{The\:parabola\:params\:are:}$

$a=-4,\:m=0,\:n=0$

$x_v=\frac{m+n}{2}$

$x_v=\frac{0+0}{2}$

$x_v=0$

$\mathrm{Plug\:in}\:\:x_v=0\:\mathrm{to\:find\:the}\:y_v\:\mathrm{value}$

$y_v=-4\cdot \:0^2$

$y_v=0$

Therefore, the parabola vertex is

$\left(0,\:0\right)$

$\mathrm{If}\:a$

$\mathrm{If}\:a>0,\:\mathrm{then\:the\:vertex\:is\:a\:minimum\:value}$

$a=-4$

$\mathrm{Maximum}\space\left(0,\:0\right)$

so,

$\mathrm{Vertex\:of}\:-4x^2:\quad \mathrm{Maximum}\space\left(0,\:0\right)$

Therefore, $y=-4x^2$ is the equation of this parabola. The graph is also attached.

7 0

3 years ago

Simplify each ratio. <br><br> 1) 40:15

Vilka [71]

Answer:

8:3

Step-by-step explanation:

,,,,lol hope it helps i don't know how to explain,,, I guess its just dividing you know like 15÷5= 3 so on

3 0

2 years ago

PLS HELP BRAINLIEST

laiz [17]

Answer:

a) AB = 17 m

b) AC = 20.8 m

Step-by-step explanation:

Pythagorean theorem

a^2 + b^2 = c^2

AB^2 = (26-11)^2 + 8^2

AB^2 = 15^2 + 8^2

AB^2 = 225 + 64

AB^2 = 289

AB = 17 m

AC^2 = AB^2 + BC^2

AC^2 = 17^2 + 12^2

AC^2 =289 + 144

AC^2 = 433

AC = 20.8 m

7 0

2 years ago