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irga5000 [103]
3 years ago
7

Simplify: 5x – 12y + 8x + 2x2 + 4x2

Mathematics
2 answers:
DaniilM [7]3 years ago
7 0
It’s 13x-12y+6x2 !! (2)
andreyandreev [35.5K]3 years ago
5 0
It’s 2. 13x- 12y + 6x2 because 8x + 5x is 13x. There are no other y values so it stays -12y. 2x2 + 4x2 is 4 + 8 which is 12 so therefore (6x2)
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-13=r/9+8<br> what is r equal to?
AURORKA [14]
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then you multiply 9 with each side and get -189 = r

you can check by rewriting the problem with -189 as r and solving the equation

7 0
3 years ago
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belka [17]
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3 0
3 years ago
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4th term of an arithmetic sequence is 23 and its 11th term is 65, what is its common difference​
Rudik [331]

Answer:

d = 6

Step-by-step explanation:

The nth term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₄ = 23 and a₁₁ = 65 , then

a₁ + 3d = 23 → (1)

a₁ + 10d = 65 → (2)

Subtract (1) from (2) term by term to eliminate a₁

10d - 3d = 65 - 23

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d = 6

5 0
3 years ago
What is the area of the top of the water buoy as shown in the figure?
gayaneshka [121]

Answer:

The answer is 28.26 square in

Step-by-step explanation:

As, the diameter if the top = 6 inches

And the area of a circle = 3.14(pi) x radius^2

So here radius = Diameter /2 = 6/2 = 3

So radius = 3 inches

So area = 3.14 x (3)^2

= 3.14 x 9

= 28.26 square in

4 0
3 years ago
Read 2 more answers
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