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krek1111 [17]
3 years ago
6

Can someone solve 5 + 2x = + 6 and n - 3n = 14 - 4n and 7 ( 5a - 4 ) - 1 = 14 - 8a

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0

Step-by-step explanation:

1.

5 + 2x = + 6

2x=6-5

2x=1

x \ =  \frac{1}{2}

2.

n - 3n = 14 - 4n

-2n= 14 -4n

-2n+4n=14

2n=14

n=7

3.

7(5a - 4 ) - 1 = 14 - 8a

35a-28-1=14-8a

35a-29=14-8a

35a+8a=14+29

43a=43

a= 1

professor190 [17]3 years ago
6 0

Answer:

5 + 2x = 6

2x = 6-5

2x = 1

x = 0.5

n -3n = 14 -4n

-2n = 14-4n (since 4n is negative, change the sign to make it positive and then add 4n to both sides of the equation)

2n = 14

n = 7

7 (5a - 4) - 1 = 14 - 8a

35a - 28 - 1 = 14 -8a

35a -29 = 14 - 8a

43a = 43

a = 1

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ryzh [129]

Answer:

No solution.

General Formulas and Concepts:

<u>Algebra I</u>

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Step-by-step explanation:

If the lines are parallel, they will have no solutions.

If the lines are the same, they will have infinite solutions.

If the lines are anything else, they will usually have 1 solution.

If we graph the systems of equations, we see that the lines are parallel.

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3 years ago
Can someone help me please
Westkost [7]

Answer:

  10.  20.9°

  11.  73.2°

Step-by-step explanation:

The inverse sine function is used to find the angle from its sine value.

<h3>10.</h3>

In each case, the equation is of the form ...

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5 0
2 years ago
Kevin is 6 years older than Timothy. 4 years ago, Kevin was twice as old as Timothy. Find their present ages.
Novosadov [1.4K]

Step-by-step explanation:

Hope it helps.

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6 0
3 years ago
Question in the photo
umka21 [38]

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3 0
3 years ago
B is the midpoint of ac. if ab=8x-7 bc=6x+7 find ac
quester [9]

Answer: AC = 98

Step-by-step explanation:

A midpoint is a point on a line segment that divides it into <em>two equal parts</em>.

This means AB = BC

AB = 8x - 7

BC = 6x + 7

AB = BC

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Subtract 6x from both sides

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Divide both sides by 2

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Now AC = AB + BC

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Substitute 7 for x

AC = 14(7)

AC = 98

Hope this helps!

6 0
3 years ago
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