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matrenka [14]
2 years ago
10

Someone please help me​

Mathematics
1 answer:
Lemur [1.5K]2 years ago
7 0

Answer: lol ty

Step-tep explanation:

Gimmie sum points kid ty]

kmjkkjkuijhjn

bjn

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Which equation has the solution x = 9?
ladessa [460]

Answer: The corect ones are 81/x - 3 =6 and 2x - 2 = 15

If i am correct please consider giveing me brainliest :)

have a good day:)

8 0
2 years ago
Read 2 more answers
What is the solution set of the x^2+x-2>o
VMariaS [17]

Answer:

x

2

−

x

−

2

=

0

Factor  

x

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−

x

−

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using the AC method.

Tap for more steps...

(

x

−

2

)

(

x

+

1

)

=

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Set  

x

−

2

equal to  

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and solve for  

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x

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6 0
3 years ago
Easy only shapes there might be multiple answers but it could only be 1 answer
Pavel [41]

Answer:

I think this one would be none of the above

5 0
2 years ago
a stack of congruent blocks, piled one on top of the other, is 4/5 foot high. Each block is 1/10 foot tall. How many blocks are
kvasek [131]
8 blocks because 2/10=1/5 so if they total 4/5 then 2/10+2/10+2/10+2/10=8/10=4/5
6 0
3 years ago
Prove that there is a positive integer that equals the sum of the positive integers not exceeding it. Is your proof constructive
Elena L [17]

Answer:

Constructive Proof

Step-by-step explanation:

Let x be a positive integer

x must be equal to sum of all positive integers exceeding it

i.e.

x = x + (x - 1) + ( x - 2) + ......... + 2 + 1

Equivalently,

x = ∑i (where i = 1 to x)

The property finite sum;

∑i (i = 1 to x) = x(x + 1)/2

So,

x = x(x + 1)/2 ------- Multiply both sides by 2

2 * x = 2 * x(x + 1)/2

2x = x(x + 1)

2x = x² + x ------- subtract 2x from both sides

2x - 2x = x² + x - 2x

0 = x² + x - 2x ----- Rearrange

x² + x - 2x = 0

x² - x = 0 ------ Factorise

x(x - 1) = 0

So,

x = 0 or x - 1 = 0

x = 0 or x = 1 + 0

x = 0 or x = 1

But x ≠ 0

So, x = 1

The statement is only true for x = 1

This makes sense because 1 is the only positive integer not exceeding 1

1 = 1

It is a Constructive Proof

A proof is constructive when we find an element for which the statement is true.

8 0
3 years ago
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