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3 years ago

Shane and Karen want to measure the length of a soccer field. Should they use centimeters or meters to measure it. Explain

Mathematics

1 answer:

puteri [66]3 years ago

4 0

Hello!

They should most definitely use meters. Meters are much bigger than centimeters as centimeters are 1/100th of a meter. Meaning, it will take 100 centimeters to get 1 meter. A soccer field is a large surface, and to get a simpler number, you should use meters.

Hope this helps!

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Which pair of equations below represent parallel lines? and y = 9 and x = 18 y = 4x + 9 and y = 4x – 9 y = 5x + 15 and y = –5x +

Inessa05 [86]

Answer:

The correct option is 2.

Step-by-step explanation:

The slope of two parallel lines are equal.

The slope intercept form of a line is

$y=mx+b$

Where, m is slope and b is y-intercept.

In option 1, the equation of lines are

$y=9$

$x=18$

The first line is a horizontal line and the second line is a vertical line. Therefore they are not parallel line. Option 1 is incorrect.

In option 2, the equation of lines are

$y=4x+9$

$y=4x-9$

By using the slope intercept form of a line, the slope of first line is 4 and the slope of second line is 4.

Since the slope of both lines are same, therefore both lines are parallel. Option 2 is correct.

In option 2, the equation of lines are

$y=5x+15$

$y=-5x+15$

By using the slope intercept form of a line, the slope of first line is 5 and the slope of second line is -5.

Since the slope of both lines are not same, therefore both lines are not parallel. Option 3 is incorrect.

3 0

3 years ago

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Write<br> 14/17<br> as a decimal rounded to the nearest tenth.

ra1l [238]

Answer:

0.8235 is a decimal and 82.35/100 or 82.35% is the percentage for 14/17.

Step-by-step explanation:

hope it helps

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3 years ago

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For the problem 135 ÷ 5, draw two different ways to break apart the array. Use the Distributive Property to write products for e

mihalych1998 [28]

We can't use the distributive property for this sum

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3 years ago

F(x) = -x+5, solve for x when f (x) =-10

Delvig [45]

Answer:

x=15

Step-by-step explanation:

-x+5

-15+5

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1 year ago

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<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%7Bx%7D%5E%7B2%7D%20%2B%204x%20-%205" id="TexFormula1" title="f(x) = {x}^{2}

KATRIN_1 [288]

Answer:

$\dfrac{df^{1}(16)}{dx} = \pm \dfrac{1}{10}$

Step-by-step explanation:

$f(x) = x^2 + 4x - 5$

First we find the inverse function.

$y = x^2 + 4x - 5$

$x = y^2 + 4y - 5$

$y^2 + 4y - 5 = x$

$y^2 + 4y = x + 5$

$y^2 + 4y + 4 = x + 5 + 4$

$(y + 2)^2 = x + 9$

$y + 2 = \pm\sqrt{x + 9}$

$y = -2 \pm\sqrt{x + 9}$

$f^{-1}(x) = -2 \pm\sqrt{x + 9}$

$f^{-1}(x) = -2 \pm (x + 9)^{\frac{1}{2}}$

Now we find the derivative of the inverse function.

$\dfrac{df^{-1}(x)}{dx} = \pm \dfrac{1}{2}(x + 9)^{-\frac{1}{2}}$

$\dfrac{df^{-1}(x)}{dx} = \pm \dfrac{1}{2\sqrt{x + 9}}$

Now we evaluate the derivative of the inverse function at x = 16.

$\dfrac{df^{-1}(16)}{dx} = \pm \dfrac{1}{2\sqrt{16 + 9}}$

$\dfrac{df^{-1}(16)}{dx} = \pm \dfrac{1}{2\sqrt{25}}$

$\dfrac{df^{-1}(16)}{dx} = \pm \dfrac{1}{2 \times 5 }$

$\dfrac{df^{-1}(16)}{dx} = \pm \dfrac{1}{10}$

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3 years ago