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2 years ago

I really need help if somebody could explain this into detail and show me how would really appreciate it please

Mathematics

2 answers:

sleet_krkn [62]2 years ago

4 0

Top guy correct (MARK HIM Brainiest)

marishachu [46]2 years ago

3 0

Answer: y = (5x)^2

Step-by-step explanation: You're finding the inverse.

f(x) = $\sqrt{x}$ /5 --> y = $\sqrt{x}$ /5 (they mean the same thing)
x = $\sqrt{y}$ /5 (switch x and y)
5x = $\sqrt{y}$ (multiple both sides by 5)
(5x)^2 = y (square both sides) --> the first answer choice

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What is the value of 4³ pls help for quiz 10 points

loris [4]

Answer:

Step-by-step explanation:

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3 years ago

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Find an equation of the sphere that passes through the origin and whose center is (-2, 2, 3). Be sure that your formula is monic

Andrei [34K]

Answer:

$\bold{(x+2))^2+(y-2)^2+(z-2)^2=17}$

Step-by-step explanation:

Given the center of sphere is: (-2, 2, 3)

Passes through the origin i.e. (0, 0, 0)

To find:

The equation of the sphere ?

Solution:

First of all, let us have a look at the equation of a sphere:

$(x-a)^2+(y-b)^2+(z-c)^2=r^2$

Where ( $x,y,z$ ) are the points on sphere.

$(a, b, c)$ is the center of the sphere and

$r$ is the radius of the sphere.

Radius of the sphere is nothing but the distance between any point on the sphere and the center.

We are given both the points, so we can use distance formula to find the radius of the given sphere:

$D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}$

Here,

$x_1 =0 \\y_1 =0 \\z_1 =0 \\x_2 =-2 \\y_2 =2 \\z_2 =3$

So, Radius is:

$r = \sqrt{(-2-0)^2+(2-0)^2+(3-0)^2}\\\Rightarrow r = \sqrt{4+4+9} = \sqrt{17}$

Therefore the equation of the sphere is:

$(x-(-2))^2+(y-2)^2+(z-2)^2=(\sqrt{17})^2\\\bold{(x+2))^2+(y-2)^2+(z-2)^2=17}$

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3 years ago

Stuck on this question because I left my calculator and the others aren’t working please help

Pavlova-9 [17]

Answer:

-94%, -0.925, -9/10, -8/9

Step-by-step explanation:

-94% = -0.94

-8/9 = -0.89

-9/10 = -0.90

Since the values are negative the order is opposite then if they were all positive.

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3 years ago

Sienna was dividing 12.76 by 0.001.

Solnce55 [7]

Sienna was dividing 12.76 by 0.001.Let's find out which one is correct based on the given choices. Let's perform division
=> 12.76 / 0.001 = 12 760

Thus, the correct answer is B. It will be less than 13,000.

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3 years ago

Is 5 a solution to the inequality

Pani-rosa [81]

4 is the answer, divide both sides by 3 and get 4

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3 years ago

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