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Sergio039 [100]
2 years ago
10

Subtract 7a2-4ab+2b2from 3ab+7a2+2b2

Mathematics
1 answer:
LUCKY_DIMON [66]2 years ago
4 0

Answer:

Step-by-step explanation:

3ab + 7a² + 2b² - (7a² - 4ab + 2b²) = 3ab + 7a² + 2b²  - 7a² + 4ab - 2b²

Now combine like term. Like terms have same variable with same power.

= <u>3ab + 4ab</u>  <u>+ 7a² - 7a²</u>  + <u>2b² - 2b²</u>

= 7ab

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WIll MARK BRAINLIEST IF ANSWER IN 2 MINUTES!!!! Which represents the equation 6 x + 3 y = 12 when solved for y? y = negative 2 x
KiRa [710]

Answer:

y=-2x+4

Step-by-step explanation:

6x+3y=12

3y=-6x+12

y=-2x+4

3 0
4 years ago
Could 8.8 cm, 8.0 cm and 8.8 cm be the side lengths of a triangle?
Alinara [238K]

Answer:

yes it is possible to have a triangle with 8.8 cm, 8.0 cm and 8.8 cm.

Step-by-step explanation:

Condition on sides of triangle:

  • The triangle inequality states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
  • It is not possible to have sum to be less than the length of the third side.
  • A triangle with three given positive side lengths exists if and only if those side lengths satisfy the given condition
  • Let a, b and c be three sides of triangle.

a + b > c\\a+c>b\\b+c>a

Here, we are given that a = 8.8 cm, b = 8.0 cm, c = 8.8 cm

We check for the triangular inequality:

1.~8.8 + 8.0 > 8.8\\16.8>8.8\\2.~8.8+8.8>8.0\\17.6>8.0\\3.~8.0+8.8>8.8\\16.8>8.8

Thus, yes it is possible to have a triangle with given measurements.

7 0
3 years ago
A triangle has a perimeter of 25" the medium side is 4 More than the short side and the longest site is 5 times the length of th
Paul [167]

Answer:

The shortest side is 3”

Step-by-step explanation:

In this question, we can observe that we have 3 sides of a triangle which are not equal in length. These sides are the long, medium and short.

We now have some mathematical statements according to the question.

Since these statements are referencing the short side, let’s start from there.

Let the length of the short side be x. The medium side is 4” more than the short side. This means that the medium side will be the short side plus 4 which mathematically is (x + 4)“. Also, we know that the longest side is 5 times the length of the shortest side. This is mathematically equal to 5x.

Lastly, we are made to know that the perimeter of the triangle is 25”. The perimeter of a triangle can be obtained by adding all the lengths together. This means that:

x + x +4 + 5x = 25

7x + 4 = 25

7x = 25 - 4

7x = 21

x = 21/7

x = 3”

5 0
3 years ago
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borishaifa [10]
Just subtract the first numbers then add the last mumber
7 0
3 years ago
How many 1 4 cup servings are in 3 8 cups of pudding? (in simplest fraction form) A) 1 6 B) 2 3 C) 3 2 D) 3 8
SVETLANKA909090 [29]

Answer: is c 3/2

Step-by-step explanation:

6 0
3 years ago
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