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3 years ago

Plesee help me im so confused

Mathematics

2 answers:

ikadub [295]3 years ago

8 0

D. because that is the description of an octagon

Tom [10]3 years ago

4 0

"Octo..." always means 8 of something ('octopus'), and if you're talking about polygons, then "regular" means that all sides have the same length and all angles have the same measure.

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For your birthday you go to the movies with three friends. You buy 4 boxes of popcorn, one for you and one for each of your frie

serious [3.7K]

Rewritten: 4(5.75 + 4.25)
solved: 4(10) = 40
explanation: it was easier this way because we did not have to work with decimals

8 0

3 years ago

Read 2 more answers

For an integer n ≥ 0, show that (n/2) - (-n/2) = n. Use greatest integer function

mars1129 [50]

The greatest integer function returns the largest integer smaller than the number you provide it. That is, if n ≤ x < n + 1, where n is an integer, then the "greatest integer of x" is [x] = n.

• Let n be even. Then we can write n = 2k for some integer k ≥ 0. Now,

[n/2] = [k] = k

while

[-n/2] = [-k] = -k

so that

[n/2] - [-n/2] = 2k = n

• Let n be odd. Then n = 2k + 1 for some integer k ≥ 0. Every odd integer occurs between two even integers, so that

n - 1 < n < n + 1

or equivalently,

2k < n < 2k + 2

so that

k < n/2 < k + 1

It follows that [n/2] = k.

Similarly, if we negative the previous inequality, we have

-k > -n/2 > -(k + 1), or -k - 1 < -n/2 < -k

which means [-n/2] = -k - 1.

So we make the same conclusion,

[n/2] - [-n/2] = k - (-k - 1) = 2k + 1 = n

3 0

2 years ago

If a scale is 1:250,000 and the distance is 8.5cm on the map what's the actual distance

timurjin [86]

8.5cm · 250,000 = 2,125,000cm

1m = 100cm therefore 1cm = 0.01m

2,125,000cm = 2,125,000 · 0.01 = 21,250m

1km = 1,000m therefore 1m = 0.001km

21,250m = 21,250 · 0.001km = 21.25km

Answer: 21,250m = 21,25km

7 0

4 years ago

Which statement is true about the potential

dezoksy [38]

Answer:

Only x=-2 is an extraneous solution is the answer

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Im kinda confused on this. i need help.

RideAnS [48]

Given :-

A graph is given to us .

To Find :-

The equation in slope intercept form .

Answer :-

From the given graph , we can see that the line passes through y axis at (0,5) . So the y intercept is 5 . And the slope of the line is 5/2 = 2.5 . So ,

$\sf\longrightarrow$ y intercept = 5 .

$\sf\longrightarrow$ slope = 5/2 .

Now here we can use the slope intercept form as ,

$\sf\longrightarrow$ y = mx + c

$\sf\longrightarrow$ y = 5/2x + 5

Hence the required answer is y = 5/2x + 5.

4 0

2 years ago

Read 2 more answers