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4 years ago

True or false, when you reflect across the y-axis, the x-coordinate is multiplied by -1

Mathematics

1 answer:

kakasveta [241]4 years ago

6 0

Answer:

True

Step-by-step explanation:

The rule for reflecting over the y-axis is (-x,y)

If the coordinate was (3,2) the new coordinate would be (-3,2)

Hope this helps.

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Which of these shapes have the same area?

zvonat [6]

Answer:

wheres the picture?

Step-by-step explanation:

3 0

3 years ago

Write the linearization of the function at the points indicated. (Enter your answer as an equation. Let x be the independent var

Natalija [7]

Answer:

$\displaystyle y=5+\frac{x}{10}$

$\displaystyle y=10+\frac{(x-75)}{20}$

Step-by-step explanation:

Linearization

It consists of finding an approximately linear function that behaves as close as possible to the original function near a specific point.

Let y=f(x) a real function and (a,f(a)) the point near which we want to find a linear approximation of f. If f'(x) exists in x=a, then the equation for the linearization of f is

$y=f(x)=f(a)+f'(a)(x-a)$

Let's find the linearization for the function

$y=\sqrt{25+x}$

at (0,5) and (75,10)

Computing f'(x)

$\displaystyle f'(x)=\frac{1}{2\sqrt{25+x}}$

At x=0:

$\displaystyle f'(0)=\frac{1}{2\sqrt{25+0}}=\frac{1}{10}$

We find f(0)

$f(0)=\sqrt{25+0}=5$

Thus the linearization is

$\displaystyle y=f(0)+f'(0)(x-0)=5+\frac{1}{10}x$

$\displaystyle y=5+\frac{x}{10}$

Now at x=75:

$\displaystyle f'(75)=\frac{1}{2\sqrt{25+75}}=\frac{1}{20}$

We find f(75)

$f(75)=\sqrt{25+75}=10$

Thus the linearization is

$\displaystyle y=f(75)+f'(75)(x-75)=10+\frac{1}{20}(x-75)$

$\displaystyle y=10+\frac{(x-75)}{20}$

5 0

3 years ago

Which ordered pair is the reflection of 3, 10 across the x axis

nikdorinn [45]

-1 -2 -4 it on the y axixs to

3 0

3 years ago

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Hi how to solve this question n(n+1)2 ; where n=9

Sindrei [870]

Answer:180

Step-by-step explanation:

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3 years ago

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What is the base of a regular hexagon

tensa zangetsu [6.8K]

If you already know the length of a side, then you can simply write it down; in this case, the length of a side is 9 cm. If you don't know the length of a side but know the length of the perimeter or apothem (the height of one of the equilateral triangles formed by the hexagon, which is perpendicular to the side), you can still find the length of the side of the hexagon. Here's how you do it:
If you know the perimeter, then just divide it by 6 to get the length of one side. For example, if the length of the perimeter is 54 cm, then divide it by 6 to get 9 cm, the length of the side.
If you only know the apothem, you can find the length of a side by plugging the apothem into the formula a = x√3 and then multiplying the answer by two. This is because the apothem represents the x√3 side of the 30-60-90 triangle that it creates. If the apothem is 10√3, for example, then x is 10 and the length of a side is 10 * 2, or 20.

8 0

3 years ago

True or false, when you reflect across the y-axis, the x-coordinate is multiplied by -1​

True or false, when you reflect across the y-axis, the x-coordinate is multiplied by -1