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3 years ago

15

Which expressions represent the distance between the two points?

1 answer:

sveticcg [70]3 years ago

8 0

On the number line, the distance between negative 11 and positive 7 is <em>18 units</em>.

Choice A: The absolute value of (-11 - 7) = absolute value of (-18) = 18.

Choice C: The absolute value of [ 7 - (-11) ] = absolute value of (7+11) = 18.

'A' and 'C' are both the same number, and it's the correct answer to the question.

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Scientists say we should sleep 3/8 of a day.How about many hours is this

meriva

9 hours because 8 x 3 = 24 and 3 x 3 = 9

7 0

2 years ago

4/9 / 9/5= the answer is

mr Goodwill [35]

Answer:

20/81

Step-by-step explanation:

Without parentheses, it is hard to tell what you are dividing. We assume you want ...

(4/9)/(9/5)

Then ...

$\displaystyle\frac{\left(\frac{4}{9}\right)}{\left(\frac{9}{5}\right)}=\frac{4}{9}\cdot\frac{5}{9}=\frac{4\cdot 5}{9\cdot 9}=\frac{20}{81}$

_____

As written (without parentheses), your expression is evaluated left to right, so evaluates to ...

4/(9·9·5) = 4/405

7 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

2 years ago

Simplify (2x^2+6x+5) - (6x^2+3x+5)

Sati [7]

Your answer will turn out to be −4x^2+3x.

4 0

3 years ago

Read 2 more answers

Write an expression that is equivalent to three over four (5z+ 16)

anygoal [31]

3
------------
4(5z+16)

I'm assuming you want to include all of the numbers

3 0

2 years ago

Read 2 more answers