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3 years ago

Which ordered pair describes point P? A) -2, +4 B) -2, -4 C) +4, -2 D) -4, -2

Mathematics

2 answers:

zimovet [89]3 years ago

7 0

The answer is a. (-2, 4). The horizontal line is the x-axis, and the vertical line is the y-axis, so the coordinate points would be (x, y) and (-2, 4) fit those coordinates. Hope this helps! :)

Volgvan3 years ago

3 0

The answer is A because when go left on a graph, the number becomes negative. So the x is -2 which gives us only 2 answers to choose from. Now when you go up, the number becomes positive so this leads us with one answer which is A. Hope this helps!

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3 years ago

Volume of sphere Marcus is using small stone spheres

satela [25.4K]

<h2>Volume of Sphere</h2>

1. What is the radius of the stone sphere?

- To know what is the radius divide is by 2.

$\large \tt 6 \div 2 = 3$

Therefore, the radius of the stone sphere is 3in

2. What is the volume of the stone sphere?

- Using the formula in finding the Volume of Sphere $\tt V = \frac{4}{3}\pi r^3$ to get the answer. Where the volume of the sphere is $\tt\frac{4}{3}\:\:\:\:\pi$ multiplied by the cube of the radius.

$\tt V = \frac{4}{3}\pi r^3$
$\tt V = \frac{4}{3}\times 3.14\times 3in^3$
$\tt V = \frac{4}{3}\times 3.14\times 27in$
$\tt V = \frac{4}{3}\times 84.78in$
$\tt V = \frac{339.12in}{3}$
$\tt V = 113.04in^3$

Therefore, the volume of the stone sphere is 113.04in³

3. Another stone sphere for the garden has a diameter of 10 inches. What is the volume of the stone sphere? Use 3.14 for <em>π</em>, and round to the nearest hundredth.

- Using the formula in finding the Volume of Sphere $\tt V = \frac{4}{3}\pi r^3$ to get the answer. Where the volume of the sphere is $\tt\frac{4}{3}\:\:\:\:\pi$ multiplied by the cube of the radius.

$\tt V = \frac{4}{3}\pi r^3$
$\tt V = \frac{4}{3}\times 3.14\times 5in^3$
$\tt V = \frac{4}{3}\times 3.14\times 125in$
$\tt V = \frac{4}{3}\times 392.5in$
$\tt V = \frac{1570in}{3}$
$\tt V = 523.33in^3$

<h3>Explanation</h3>

Therefore, the volume of the stone sphere is 523.33in³

<h3>#CarryOnLearning</h3>

4 0

2 years ago

Read 2 more answers

Help me please the last question

Assoli18 [71]

Answer:

17/7, y = 21 * (17/7), 51

Step-by-step explanation:

so to find what x is, we need to find how much it rises in 1 minute. we do that by dividing 17 by 7. we then see that we want to find how much is it filled in 21 minutes. we then multiply (17/7) by 21 to find the y which is 51

5 0

3 years ago

We don't like to find broken crackers when we open the package. How can makers reduce breaking? One idea is to microwave the cra

mafiozo [28]

Answer:

<u>Step-by-step explanation:</u>

Does microwaving significantly improve indicators of future breaking?

Yes, this is because the normal requirements based on the 95% confidence implies having a deviation of only 5%. That is, it should fall within 5% of 65 newly baked crackers =5% x 65= 3.25. Thus, since only 3 of the 65 microwaved crackers showed visible cracking we could be confident.

How large is the improvement? What do you conclude about the idea of microwaving crackers?

<em>Approximately there was an 83.08% (57/65 *100 - 3/65 *100) improvement.</em>

The conclusion is that there is a statistically significant relationship between microwaving and reducing cracking.

8 0

3 years ago