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andreev551 [17]
3 years ago
6

Combine like terms. 2y2 – 5+1 + 2y2 – 6y2 – 3 – 4y ASAP someone help please

Mathematics
2 answers:
AnnZ [28]3 years ago
3 0

Answer:

-2y2 - 4y - 7

Step-by-step explanation:

2y2 + 2y2 - 6y2 - 4y - 5 - 3 + 1

4y2 - 6y2 - 4y - 8 + 1

-2y2 - 4y - 7

Nadya [2.5K]3 years ago
3 0

Answer:

<h3>3x 2 + 19 i think thats the answer</h3>
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Step-by-step explanation:

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8 0
2 years ago
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21 times 9 equals 9 times 21 what is the property
Reil [10]
Commutative property....
5 0
3 years ago
The width of a rectangle is 6 kilometers less than twice its length. if its area is 108 square​ kilometers, find the dimensions
Art [367]
Hi there!

Answer:
length = 9 kilometres
Width = 12 kilometres

Let's solve this problem step by step!
To find our answer we need to set up and solve an equation.

Let the length of the rectangle be represented by x.
The width of the rectangle can therefore be expressed by 2x - 6.

The area of a rectangle can be found by using the formula:
A = width × length

Plug in the data from the formula
A = x (2x - 6).

Simplify using rainbow technique.
x(2x - 6) = 2 {x}^{2} - 6x

Now we've found the simplified expression that expresses the area of the rectangle. Therefore, we can now set up and start solve the equation.

2 {x}^{2} - 6x = 108
Subtract 108

2 {x}^{2} - 6x - 108 = 0
Divide by 2.

{x}^{2} - 3x - 54
(x - 9)(x + 6) = 0
Rule AB = 0, gives A is 0 or B is 0.

x - 9 = 0 \\ x = 9 \\ \\ x + 6 = 0 \\ x = - 6

The length of the rectangle, which was represented by x, must be 9 (since it cannot be a negative number).

Length
x = 9
Width
2x - 6 = 2 \times 9- 6 = 18 - 6 = 12

Answer:
length = 9 kilometres
Width = 12 kilometres

~ Hope this helps you!
6 0
3 years ago
????????????????????????????
never [62]
It would be 12.5 square miles I would appreciate the Brainliest
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2 years ago
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prohojiy [21]

Answer:

yaa....i'll talk with you

where you want to talk??

i mean which app?

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3 years ago
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