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3 years ago

How do you know if an equation represents a proportional relationship?

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

8 0

If it creates a straight line on a graph, it is proportional

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Explain how to find the difference -4/5-3/5

erastovalidia [21]

Hello There!

The denominators are already the same therefore you don't need to work on making them the same.
Simply just subtract the numerators:
-4 - 3 = -7
The answer is - 7/5

Hope This Helps You!
Good Luck :)

- Hannah ❤

8 0

3 years ago

The figure is made up of a cylinder and a sphere which has been cut in half. The radius of each half sphere is 5 mm. What is

alexgriva [62]

<h2>Answer:</h2>

<em>Rounded to the nearest hundredth the volume of the composite figure is:</em>

<em>1308 33 cubic millimeters</em>

<h2>Explanation:</h2>

Hello! I wrote the complete question in a comment above. The volume of a cylinder is defined as:

$V_{c}=\pi r^2 h \\ \\ r:radius \\ \\ h:height$

While the volume of half a sphere is:

$V_{hs}=\frac{2}{3}\pi r^3$

Since we have 2 half spheres, then the volume of these is the same as the volume of a sphere:

$V_{s}=\frac{4}{3}\pi r^3$

Then, the composite figure is:

$V=\pi r^2 h +\frac{4}{3}\pi r^3 \\ \\ V=\pi r^2(h+\frac{4}{3}r)$

The radius of the cylinder is the same of the radius of each half sphere. So:

$r=5mm \\ \\ h=10mm \\ \\ \\ V=(3.14) (5)^2((10)+\frac{4}{3}(5)) \\ \\ V=25(3.14)(10+\frac{20}{3}) \\ \\ \boxed{V\approx 1308.33mm^3}$

7 0

3 years ago

Find the area of the shaded segment. Round your answer to the nearest square centimeter. Will make brainliest answer if correct

allochka39001 [22]

First find the area of the circle using A=pi*r^2
pi*36
Then divide this by 4 because the shaded region is 1/4 of the circle
(36*pi)/4=9*pi
Final answer: B

6 0

3 years ago

Which expression is equivalent to (x^1/2y^16)^1/2

Irina-Kira [14]

Xy^16 / 4

I don't really know how to explain it, but this is the answer

5 0

4 years ago

Using the order of Operations, find the soultion. Evaluate the Expression 17 + 32 - 5 x 4

Ludmilka [50]

Answer:

Step-by-step explanation:

49 - 20

hope it helps u

5 0

3 years ago

Read 2 more answers