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3 years ago

I need help with this

Mathematics

1 answer:

kodGreya [7K]3 years ago

5 0

Answer:

If we are working in a coordinate plane where the endpoints has the coordinates (x1,y1) and (x2,y2) then the midpoint coordinates is found by using the following formula:

midpoint=(x1+x22,y1+y22)

Step-by-step explanation:

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What is the inverse function of d(x) = 2x - 4?

zysi [14]

Answer:

$d^{-1}$ (x) = $\frac{x+4}{2}$

Step-by-step explanation:

let d(x) = y and rearrange making x the subject, that is

2x - 4 = y ( add 4 to both sides )

2x = y + 4 ( divide both sides by 2 )

x = $\frac{y+4}{2}$

Change y back into terms of x, so

$d^{-1}$ (x ) = $\frac{x+4}{2}$

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3 years ago

PLZ HELP FAST multiple choice<br>touching spirit bear

Juli2301 [7.4K]

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3 years ago

What is the yintercept in the equation y=4x-3?

sergejj [24]

Answer:

-3

Step-by-step explanation:

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m=slope

b=y-intercept

3 0

3 years ago

The equation through the point (-2, 5) and is parallel to the line with the equation y=2x+7

andrezito [222]

If a line is parallel to y=2x+7 the line must have the same slope but different y- intercept. The equation y=2x+7 has a slope (m) of 2 and y- intercept of 7.

By using the point slope formula and the point (-2,5) we have:

$y = m(x -x1) + y1 \\ \\ y = 2(x - ( - 2)) + 5 \\ \\ y = 2(x + 2) + 5 \\ \\ y = 2x + 4 + 5 \\ \\ y = 2x + 9$

8 0

3 years ago

Krissa exercises daily by walking. She aims to walk at a steady rate of 3.4 miles per hour.

larisa86 [58]

Answer:

Step-by-step explanation:

A) We use this relation: Distance = time * speed ( speed or vitesse or rate)

So d= 3.4*t= 3.4t (miles)

B) If t= 5/8

then the distance d= 3.4* 5/8= 2.125 miles.

C) If the distance d= 5.44, we can find the time like:

d= 3.4*t, and we know d=5.44

so 5.44= 3.4*t or t = 5.44/3.4, t= 1.6 hours

Hope you understand it.

3 0

3 years ago