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IgorLugansk [536]
3 years ago
13

Perform the operation. (9x2 - 8) - (-4x2 - 5x)Anyone know this one?​

Mathematics
1 answer:
Degger [83]3 years ago
7 0

Answer:

5x+18

Step-by-step explanation:

9 x 2-8-(-4 x 2-5x)

18-8-(-4 x 2-5x)

18-8-(-5x-8)

18-8+8+5x

Please give Brainliest

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PLEASE HELP!! WILL REQARD A LOT
Soloha48 [4]

9514 1404 393

Answer:

  17,500

Step-by-step explanation:

The problem can be written as a proportion:

  hits/revenue = 1000/(£2) = x/(£35)

Multiplying by £35 gives ...

  x = 1000(35/2) = 35000/2 = 17,500

17500 hits are required for revenue of £35.

3 0
3 years ago
Read 2 more answers
Classify each figure on the triangle
ipn [44]
All the triangles are isosceles meaning that they have to sides that are equal 
5 0
3 years ago
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if a 12 sides regular polygon rotates about it’s center at which angle of rotation will the image of the polygon coincide with t
kotegsom [21]

360 / 12 = 30

So, it's 30 degrees.


Incidentally, a 12 sided polygon is called a dodecagon.



6 0
3 years ago
Read 2 more answers
The third term of an arithmetic sequence is 14 and the 9th term is -1. Find the first four terms of the sequence.​
Liula [17]

Answer:

The first four terms of the sequence are :  19, 16.5 , 14 , 11.5

Step-by-step explanation:

In the given sequence:

a(3) =  14, a(9)  = -1

The general term of a sequence in Arithmetic Progression is:

a(n) = a + (n-1)d

a(3) = a + (3 -1) d = a + 2 d

and a(9) = a + (9- 1 ) d = a  + 8 d

⇒   a + 2 d =  14      .........  (1)

and a + 8 d  = -1    ...........  (2)

Now, solving the given system of equation, we get:

From (1), a  = 14 - 2 d

Put in (2), we get:

a + 8 d  = -1                ⇒   14 - 2 d + 8d = -1

⇒  14 +   6d   = -1  

or,  6d = -1 -14 = -15

⇒  d = -15/6 = -2.5

or, d  = -2.5

Then a  = 14 - 2 d = 14 - 2(-2.5)  =14 + 5  = 19, or a  = 19

Now, first four terms of the sequence is:

a = 19

a(2) = a + 4 = 19 - 2.5 = 16.5

a(3) = a + 2d = 19 + 2(-2.5) = 19 - 5 = 14

a(4) = a  + 3d = 19 + 3(-2.5)  = 19  - 7.5  = 11.5

Hence, the first four terms of the sequence are :  19, 16.5 , 14 , 11.5

4 0
3 years ago
Please help! Giving out brainiest.
iVinArrow [24]

Answer:

x - 1

Step-by-step explanation:

3(3x + 3) - 2(5 + 4x)

9x + 9 -10 - 8x

x - 1

hope this helps!

3 0
3 years ago
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