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Norma-Jean [14]
3 years ago
14

Which expression is equivalent to (7x - 5 ) - ( 3x - 2)?

Mathematics
2 answers:
Dafna1 [17]3 years ago
6 0
Distribute the minus sign into the second parenthesis to get 7x-5-3x+2.
Then combine like terms to get 4x-3
Nastasia [14]3 years ago
5 0
(7x - 5 ) - ( 3x - 2) 

7x-5-3x+2 

(7x-3x)-5+2          \ Gather \ like \ terms  

4x-5+2 

4x-3


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Solve the equation. Check for extraneous solutions. Type your answers in the blanks. Show your work. |4x+3| = 9+2x
GaryK [48]

Answer:

Step-by-step explanation:

|4x + 3| = 9 + 2x

We see the absolute value so we have to consider 2 cases:

(1)

4x + 3 = -9 - 2x

6x = -12

x = -2

(2)

4x + 3 = 9 + 2x

2x = 6

x = 3

Let's plug in both results.

|4(-2) + 3| = 9 + 2(-2)

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5 = 5

Therefore x = -2 is a solution

|4(3) + 3| = 9 + 2(3)

|15| = 9 + 6

15 = 15

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3 0
3 years ago
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Step-by-step explanation:

3a + a + 5b - 2b

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<em><u>4a + 3b</u></em>

6 0
3 years ago
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To rent a certain meeting room, a college charges a reservation fee of $49 and an additional fee of $7.80 per hour. the math clu
yulyashka [42]
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3 years ago
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Svetach [21]
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Answer:

38.60mm

Step-by-step explanation:

Step one:

Given data

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Let us assume that the triangle is a right angle triangle

Step two:

Applying the Pythagoras theorem we can find the third as

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3 0
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