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3 years ago

Solve the equation 2x-1=4x+5

Mathematics

2 answers:

Feliz [49]3 years ago

8 0

Answer:

x = -3

Step-by-step explanation:

Solve for x:

2 x - 1 = 4 x + 5

Subtract 4 x from both sides:

(2 x - 4 x) - 1 = (4 x - 4 x) + 5

2 x - 4 x = -2 x:

-2 x - 1 = (4 x - 4 x) + 5

4 x - 4 x = 0:

-2 x - 1 = 5

Add 1 to both sides:

(1 - 1) - 2 x = 1 + 5

1 - 1 = 0:

-2 x = 5 + 1

5 + 1 = 6:

-2 x = 6

Divide both sides of -2 x = 6 by -2:

(-2 x)/(-2) = 6/(-2)

(-2)/(-2) = 1:

x = 6/(-2)

The gcd of 6 and -2 is 2, so 6/(-2) = (2×3)/(2 (-1)) = 2/2×3/(-1) = 3/(-1):

x = 3/(-1)

Multiply numerator and denominator of 3/(-1) by -1:

Answer: x = -3

timurjin [86]3 years ago

7 0

Answer:

-3

Step-by-step explanation:

2x-1=4x+5

-1=2x+5

-6=2x

x=-3

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What is the least common multiple of 5 & 6?

oksian1 [2.3K]

Answer:

Step-by-step explanation:

5=5,10,15,20,25,(30),35

6=6,12,18,24,(30),36

30 is the first number that can be used to divide both numbers

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3 years ago

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jekas [21]

Answer:

a) 10*10 inch, b)yes, c) 15

Step-by-step explanation:

we need to calculate the Greatest Common Factor between 30 and 50

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then, the square tiles will be 10 inch *10 inch

b) it will change because they don't need to have the largest slab possible so they will use any other comon factor with a size they consider correct for the cheese.

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15 squares of 10inch*10inch of cheese could be cut.

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3 years ago

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2X+4=20+5X<br>A)1/2 B)-1/2 C)2 D)-2

Nookie1986 [14]

Answer:

It seems that your options aren't correct as the right answer is -5.3333... (recurring)

Step-by-step explanation:

1) 2x + 4 = 20 + 5x (subtract by the smallest unknown)

-2x -2x

2) 4 = 20 + 3x

-20 -20 (now subtract each side by 20 as we want to leave the unknown on one side and another number on the other side.

3) -16 = 3x (Divide each side by 3)

÷3 = ÷3

4) -5.33333... = x

<h3>Now we have found x but if you're unsure you can substitute to see if your answer is correct.</h3><h3>2 x -5.3333 + 4 = -6.6666</h3><h3>20 + 5 x -5.3333= -6.6665</h3><h3>Our answer is correct! (When answers are rounded, it is equal to the same thing).</h3>

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3 years ago

there are 2,300 licensed dogs in clarkson. A random sample of 50 of the dogs in Clarkson shows that 8 have ID microchips implant

algol [13]

Set up a ratio comparing the sample portion to the whole portion.

x= # of all dogs likely to have chip

Sample: 8 out of 50
Whole: x out of 2,300

8/50= x/2300
cross multiply

(50*x)= (8*2300)
50x= 18400

divide both sides by 50
x= 368

ANSWER: 368 dogs in Clarkson are likely to have a microchip.

Hope this helps! :)

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A. vertical angles<br> b. complementary angle<br> c. supplementary angle<br> d. none of the above

Elis [28]

Answer:

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Step-by-step explanation:

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