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Deffense [45]
2 years ago
7

Prove: The square of a number that is

Mathematics
1 answer:
Nikolay [14]2 years ago
3 0

Let 3<em>n</em> + 1 denote the "number" in question. The claim is that

(3<em>n</em> + 1)² = 3<em>m</em> + 1

for some integer <em>m</em>.

Now,

(3<em>n</em> + 1)² = (3<em>n</em>)² + 2 (3<em>n</em>) + 1²

… = 9<em>n</em>² + 6<em>n</em> + 1

… = 3<em>n</em> (3<em>n</em> + 2) + 1

… = 3<em>m</em> + 1

where we take <em>m</em> = <em>n</em> (3<em>n</em> + 2).

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Answer question in image attached :)<br> 20 points !<br><br> I think it is 2/4 just not 100% sure :/
sergiy2304 [10]

<u>Answer</u>:

\sf \dfrac{BC}{BD}  = \dfrac{2}{4}

<u>Explanation</u>:

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so in fractions:

\sf \dfrac{BC}{BD}  = \dfrac{2}{4}

\sf \dfrac{BC}{BD}  = \dfrac{1}{2}

3 0
2 years ago
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What’s the answer to this question?
sertanlavr [38]

Answer:

2 equations

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Step-by-step explanation:

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4 0
3 years ago
Find the value of x I really need this to pass this yr.
svp [43]
It takes a while to see through this one. 
I think that's because the triangle is in a weird position.

The arrows on the two across-lines tell us that those lines are parallel.
And THAT tells us that the two triangles are similar ... the whole big triangle,
and the smaller triangle on the bottom.

If two triangles are similar, then what ?

-- Their corresponding angles are equal.  That doesn't help us in this problem.

-- Their corresponding sides are in the same ratio.  That helps us a lot !

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Now we know that corresponding sides of the two triangles
have the ratio of 13 to 8 .

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The ratio has to be 13/8 ,  so ===>       (4+x) / x  =  13 / 8 .

That's the tough part.  Now you take it and finish it off from here.
8 0
3 years ago
Y=-4/3x <br> Give the slope and y-intercept
morpeh [17]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
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(b) one dihedral angle in methyl formate relates the plane containing the o=c–o bonds to the plane containing the c–o–c bonds. i
Nuetrik [128]

Answer:

Step-by-step explanation:

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However, a dihedral angle is an angle that exists between pairs of chemical bonds separated by a third bond.

From the images attached below, we will see how methyl formate connects to the plane at an angle of 0° and 180°.

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