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3 years ago

Write an equation that expresses the relationship. Use k as the constant of variation.

Mathematics

1 answer:

Kruka [31]3 years ago

6 0

Step-by-step explanation:

x = k/m

hope this helps. good luck!

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joja [24]

Answer:

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3 years ago

A car is traveling at a rate of 90 kilometers per hour. What is the car's rate in miles per hour? How many miles will the car tr

ser-zykov [4K]

Answer:

14.065

Step-by-step explanation:

First you wanna transfer it from kilometers to miles.

if 1 mile is = to 1.6 kilometers that is the same as saying

1/1.6, but because we are using 90 we plug it in and it becomes: 90/1.6 which gives you 56.25.

now we know we are going 56.25 miles per hour and because we are traveling 4 hours divide the miles per hour by 4 and you get 14.065.

3 0

3 years ago

Plot the points A(9, 11) and B(–3, –5). Find midpoint M of AB. Then show that AM = MB and AM + MB =AB

Alex_Xolod [135]

Answer:

The midpoint is (3, 3).

Step-by-step explanation:

We are given the two points A(9, 11) and B(-3, -5).

The midpoint is given by:

$\displaystyle M=\Big(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}\Big)$

So:

$\displaystyle M = \Big( \frac{9+(-3) }{2}, \frac{ 11+(-5) }{2} \Big) = (3,3)$

The midpoint is (3, 3).

We want to show that AM = MB.

We can use the distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2$

The distance between A(9, 11) and M(3, 3) will then be:

$AM=\sqrt{(9-3)^2+(11-3)^2}=\sqrt{6^2+8^2}=\sqrt{100}=10$

And the distance between B(-3, -5) and M(3, 3) will be:

$MB = \sqrt{ (3-(-3))^2 + (3-(-5))^2 } = \sqrt{(6)^2+(8)^2} = \sqrt{ 100 } = 10$

So, AM = MB = 10.

Since AM = MB = 10, AM + MB = 10 + 10 = 20.

So, we want to prove that AB = 20.

By the distance formula:

$AB=\sqrt{(9-(-3))^2+(11-(-5))^2}=\sqrt{12^2+16^2}}=\sqrt{400}=20\stackrel{\checkmark}{=}20$

4 0

3 years ago

5 - 2 (4x + 2) i need help

Fiesta28 [93]

Answer:

1-8x

Step-by-step explanation:

not sure ...........

4 0

3 years ago

Read 2 more answers

The question is in the picture

sergeinik [125]

The first one.. -12..i got you.

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3 years ago