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lana [24]
3 years ago
5

Help ! i should really pay attention in class

Mathematics
1 answer:
lara [203]3 years ago
4 0

Answer:

I think its b

Step-by-step explanation:

You might be interested in
Is it possible for two different numbers, when squared, to give the same result?
lawyer [7]

Actually, yes, it is possible for two different numbers to give the same result when squared.

In my last answer, I wrote that it wasn't, but I realize now where my mistake was made.

When a number like positive 4 is squared, the answer is 16. When a number like negative 4 is squared, the answer is also 16. I think that the only time when two different squared numbers have the same result is when they are the same number but have a different positive/negative sign.

I hope this helps.

7 0
3 years ago
If the 3rd and 9th term of an ap are 4 and -8 respectively then which term of AP is zero​
Anon25 [30]

Answer:

fifth term

Step-by-step explanation:

The n th term of an AP is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₃ = 4 and a₉ = - 8 , then

a₁ + 2d = 4 → (1)

a₁ + 8d = - 8 → (2)

Subtract (1) from (2)

6d = - 12 ( divide both sides by 6 )

d = - 2

Substitute d = - 2 into (1)

a₁ + 2(- 2) = 4

a₁ - 4 = 4 ( add 4 to both sides )

a₁ = 8

Thus equating the n th term formula to zero and solving for n

8 - 2(n - 1) = 0 ( subtract 8 from both sides )

- 2(n - 1) = - 8 ( divide both sides by - 2

n - 1 = 4 ( add 1 to both sides )

n = 5

The fifth term is equal to zero

8 0
3 years ago
Please help idek know what this is asking me.....
nadya68 [22]

Answer:

I think The answer is...C

3 0
2 years ago
40⋅8−10^2= ? WHAT DO ANYONE KNOW THIS ANSWER. ORDER OF OPERATIONS....
never [62]

Answer: 220

Step-by-step explanation:

4 0
3 years ago
PLEASE HELP
Leviafan [203]

Answer:

An artist use 51.9 feet of string for constructing a piece of art in the shape of rectangle

Step-by-step explanation:

Here an artist is constructing a piece of art in the shape of rectangle having length 12 feet & width of 7 feet

Since the artist wants to use string to tightly tie each vertex of rectangle to the other three vertices. Hence one string will tie in a diagonal way

Hence total length of string will be

Total length = Perimeter of rectangle  +  length of diagonal

Perimeter of rectangle  = 2( length + width ) = 2 ( 12 + 7 ) = 2 x 19 = 38 feet

Length of diagonal given by Pythagoras theorem

\mathrm{Length =   {  \left(  { a  }^{ 2  }  + { b  }^{ 2  }    \right)    }^{ 0.5  }     =    {  \left(  { 12  }^{ 2  }  + { 7  }^{ 2  }    \right)    }^{ 0.5  }     = 13.89244\:\:feet}

Hence

Total length = Perimeter of rectangle  + length of diagonal

Total length = 38 feet + 13.89244 feet = 51.9 feet

Hence an artist use 51.9 feet of string for constructing a piece of art in the shape of rectangle

4 0
2 years ago
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