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4 years ago

(-2,-1) (1,-1) find the distance between two points

Mathematics

1 answer:

Daniel [21]4 years ago

8 0

Answer:

Step-by-step explanation:

$\bold{METHOD\ 1:}\\\\\text{Use the formula:}\\\\d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\\\\text{Substitute the coordinates of the give points:}\\\\d=\sqrt{(1-(-2))^2+(-1-(-1))^2}=\sqrt{(1+2)^2+(-1+1)^2}\\\\=\sqrt{3^2+0^2}=\sqrt9=3$

$\bold{METHOD\ 2:}\\\\\text{We can see that the second coordinates of the points (ordinate) are the same.}\\\text{Therefore, the distance between these points is equal to the distance}\\\text{ between the first coordinates (abscissa).}\\\\d=|1-(-2)|=|1+2|=|3|=3$

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motikmotik

4×N=C or 4N=C Hope this helps

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3 years ago

Solve for j. –9j = 6j − 2(5j + 5) j =

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Answer:

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3 years ago

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An aircraft jet engine has a thrust of I80N. What impulse is produced in 30 S?

neonofarm [45]

The impulse that was produced by this aircraft jet engine is 5,400 Ns.

Given the following data:

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To determine the impulse that was produced by this aircraft jet engine:

<h3>How to calculate impulse.</h3>

Mathematically, impulse is given by this formula:

$I = Ft$

Where:

F is the force or thrust.

t is the time measured in seconds.

Substituting the given parameters into the formula, we have;

$I = 180 \times 30$

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Read more on impulse here: brainly.com/question/16750406

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2 years ago

At the market, 8 apples cost $4.How much do 9 apples cost?

lesya692 [45]

Answer:

$4.50

Step-by-step explanation:

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Unit rate equals: 1 apple for 50 cents.

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3 years ago

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How do you do this!?!

Andrei [34K]

11x + y = 4

x | y

0 | 4

$\frac{4}{11}$ | 0

plot the y-intercept (0, 4) and the x-intercept ( $\frac{4}{11}$ , 0)

11x + y = 4

-11x -11x

y = -11x + 4 ⇒ m = $\frac{-11}{1}$ , b = 4

plot at point the y-intercept "b = 4" (0,4). plot the next point using the slope "m = $\frac{-11}{1}$ " from point (0,4), count down 11 and to the right 1 (1,-7).

Using intercepts would not provide an accurate graph because you have to estimte where ( $\frac{4}{11}$ , 0) is, so it is best to use slope-intercept form.

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x + y = -2

x | y

0 | -2

-2 | 0

plot the y-intercept (0, -2) and the x-intercept (-2, 0)

x + y = -2

-x -x

y = -x - 2 ⇒ m = $\frac{-1}{1}$ , b = -2

plot at point the y-intercept "b = -2" (0,-2). plot the next point using the slope "m = $\frac{-1}{1}$ " from point (0,-2), count down 1 and to the right 1 (1,-3).

Both methods are easy to use so either can be used.

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x - 2y = 18

x | y

0 | -9

18 | 0

plot the y-intercept (0, -9) and the x-intercept (18, 0)

x - 2y = 18

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$\frac{-2y}{-2} = \frac{-1}{-2}x + \frac{18}{-9}$

y = $\frac{1}{2}x$ - 9

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Using intercepts will make a large graph since you have to plot (18,0) so it is best to use the slope-intercept form.

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3 years ago