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3 years ago

I need help answering this question

Mathematics

2 answers:

blsea [12.9K]3 years ago

6 0

Answer:

I think D

Step-by-step explanation:

Because an experiment is defined as a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact. This example is testing to see if the mouthwash is effective.

Alecsey [184]3 years ago

3 0

Answer:

I'm pretty sure it's D, sorry if I'm wrong

Step-by-step explanation:

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Please help me :)) algebra 2! what are the real roots?

irina1246 [14]

Answer:

Step-by-step explanation:

So we have the equation:

$3(x-4)^\frac{4}{3}+16=64$

First, let's subtract 16 from both sides:

$3(x-4)^\frac{4}{3}=48$

Now, let's divide both sides by 3:

$(x-4)^\frac{4}{3}=16$

Remember that with fractional exponents, we can move the denominator into the root position. Therefore:

$(\sqrt[3]{x-4})^4=16$

Let's take the fourth root of both sides. Since we're taking an even root, make sure to have the plus-minus symbol!

$\sqrt[3]{x-4} =\pm 2$

Cube both sides. Since we're cubing, the plus-minus stays.

$x-4=\pm 8$

Add 4 to both sides.

$x=\pm 8+4$

Calculator:

$x=8+4\text{ or } x=-8+4\\x=12\text{ or } x=-4$

So, our answer is A.

And we're done!

7 0

4 years ago

Is 15/15 greater than 9/15

suter [353]

Yes ,Because I whole is bigger or grater than

6 0

4 years ago

Read 2 more answers

PLZZ HELP

Elan Coil [88]

It is a function. This is because the x's don't repeat.

5 0

3 years ago

Read 2 more answers

Need help with this, simple but I don't understand/remember how to do it.

Lorico [155]

By using definition of proportionality and Pythagorean theorem, the values of x and y associated with the geometrical system formed by two right triangles are 36 / 5 and 104 / 5, respectively.

<h3>How to analyze a geometrical system formed by two proportional right triangles</h3>

Herein we find a picture of a geometrical system formed by two proportional right triangles with two variables: {x, y} These variables can be found by using the definition of proportionality and the Pythagorean theorem:

5 / 8 = 12 / (12 + x) = 13 / y

Then, we proceed to solve the system formed by two equations:

(12 + x) / 12 = 8 / 5

12 + x = 96 / 5

x = 96 / 5 - 12

x = 36 / 5

y / 13 = 8 / 5

y = 104 / 5

To learn more on right triangles: brainly.com/question/6322314

#SPJ1

7 0

2 years ago

Ariel has a plastic ice cream cone in her food playset. The ice cream cone is half-sphere sitting on top of a cone. What is the

Svetllana [295]

The approximate volume of the toy ice cream cone is 753.60 cm³

Step-by-step explanation:

The ice cream cone is half-sphere sitting on top of a cone, that means

the radius of the base of the cone is equal to the radius of the

half sphere

To find the volume of the toy ice:

1. Find the volume of the cone

2. Find the volume of half sphere

3. Add the two volumes

∵ The volume of the cone = $\frac{1}{3}$ π r² h, where r is its

radius and h is its height

∵ r = 6 cm , h = 8 cm and π = 3.14

∴ The volume of the cone = $\frac{1}{3}$ (3.14)(6)²(8)

∴ The volume of the cone = 301.44 cm³

∵ The volume of the sphere = $\frac{4}{3}$ π r³, where r is its

radius

∴ The volume of the half sphere = $\frac{1}{2}$ × $\frac{4}{3}$ π r³

∴ The volume of the half sphere = $\frac{2}{3}$ π r³

∵ r = 6 cm and π = 3.14

∴ The volume of the half sphere = $\frac{2}{3}$ (3.14)(6)³

∴ The volume of the half sphere = 452.16 cm³

Add the two volumes to find the volume of the toy ice cream cone

∴ The volume of toy = 301.44 + 452.16

∴ The volume of toy = 753.60 cm³

The approximate volume of the toy ice cream cone is 753.60 cm³

Learn more:

You can learn more about the volume in brainly.com/question/12497249

#LearnwithBrainly

6 0

3 years ago