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Olegator [25]
3 years ago
8

The diameter of a circle is 3 cm. Find the circumference and the area.

Mathematics
1 answer:
ivanzaharov [21]3 years ago
6 0

Answer:

the third one C=3π cm; A=9π cm²

Step-by-step explanation:

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(-3,1) (-7,-2) <br> The slope is?
coldgirl [10]

Answer:

3/4

Step-by-step explanation:

Δy = y1 - y2 = 1 - (-2) = 3

Δx = x1 - x2 = -3 - (-7) = 4

Slope = Δy/Δx = 3/4

7 0
2 years ago
Using the Principle of Mathematical Induction, prove that . n ^2 − n is even for n ≥ 1​
Tamiku [17]

Base case: if <em>n</em> = 1, then

1² - 1 = 0

which is even.

Induction hypothesis: assume the statement is true for <em>n</em> = <em>k</em>, namely that <em>k</em> ² - <em>k</em> is even. This means that <em>k</em> ² - <em>k</em> = 2<em>m</em> for some integer <em>m</em>.

Induction step: show that the assumption implies (<em>k</em> + 1)² - (<em>k</em> + 1) is also even. We have

(<em>k</em> + 1)² - (<em>k</em> + 1) = <em>k</em> ² + 2<em>k</em> + 1 - <em>k</em> - 1

… = (<em>k</em> ² - <em>k</em>) + 2<em>k</em>

… = 2<em>m</em> + 2<em>k</em>

… = 2 (<em>m</em> + <em>k</em>)

which is clearly even. QED

8 0
3 years ago
Andre is setting up rectangle tables for a party. He can fit 6 chairs around a single table. Andre lined up 10 tables end to end
IRINA_888 [86]
If there is one table (t=1) then 6 chairs (c=6) can be placed around the table, 2 along the length on each side and 1 at each end.
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3 years ago
The perimeter of a rectuangler pool is 130 ft. the width is 4 times the length. find the length and width of the pool
Hunter-Best [27]
The width is 52ft and the Length is 13ft.
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3 years ago
catering company uses a linear function to determine the total cost of parties. The following table shows the costs for dinner p
irakobra [83]

Answer:

It would be $870 because you have to add 315+555=870

6 0
3 years ago
Read 2 more answers
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