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3 years ago

What are the steps to solving 5x=3x+4 in words?

Mathematics

2 answers:

KATRIN_1 [288]3 years ago

5 0

Answer:

5x=3x+4

5x-3x=4

2x=4

x=2

Step-by-step explanation:

First subtract 3x on both side of equation. 2x=4

Divide x=4

x=4

Valentin [98]3 years ago

5 0

Answer:

to solve 5x=3x+4, the first thing you would do is subtract 3x from both sides. this will leave you with 2x=4. so now you have to divide both sides by 2 which would leave you with x=2. so the solution for this equation is 2.

Step-by-step explanation:

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If k = √(49 - 12√5), then find the value of k +2

malfutka [58]

Step-by-step explanation:

k = √(49 - 12√5)

= √(45 + 4 - 2 √180)

= √45 - √4

= 3 √5 - 2.

<em>So, k + 2 = 3 √5 - 2 + 2 = 3 √5.</em>

3 0

2 years ago

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Please help (angles)

OLEGan [10]

Angle 6&5 are supplementary so they make a line. (Add to 180.)
(3x-34)+124=180 combine like terms
3x + 90=180 subtract 90 from both sides
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7 0

4 years ago

Which describes the slope of this line?

sergeinik [125]

I take the points that you gave. Let named A(0,-3) and B(2,1)

The slope coefficient is S= (yb-ya)/(xb-xa)

S= (1-(-3))/(2-0) => S= (1+3)/2 = 4/2= +2 => S= +2

The correct answer is positive slope
Good luck!!!

7 0

3 years ago

I am a 2-digit number. if you double a number and multiply it by 3, it results to 72. what am I?

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

2x (3) = 72 so 6x = 72 and so x = 12

8 0

3 years ago

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A rectangular garden must have a perimeter of 145 feet and an area of at least 1100 square feet. Describe the possible lengths o

marta [7]

Answer:

The approximate length of the garden is at least 22 feet and at most 51 feet.

Step-by-step explanation:

A rectangular garden must have a perimeter of 145 feet.

Let x feet be the lengths of the garden. Then the width of the garden can be found using the perimeter:

$P=2(\text{Length}+\text{Width})\\ \\145=2(x+\text{Width})\\ \\\text{Width}=72.5-x$

The area of the garden is

$A=\text{Length}\cdot \text{Width}\\ \\A=x\cdot (72.5-x)$

The area must be at least 1,100 square feet, then

$x(72.5-x)\ge 1,110\\ \\72.5x-x^2-1,100\ge 0\\ \\x^2-72.5x+1,100\le 0$

Solve this quadratic inequality:

$D=(-72.5)^2-4\cdot 1,100=856.25\\ \\\sqrt{D}=25\sqrt{1.37}\\ \\x_1=\dfrac{72.5-25\sqrt{1.37}}{2}\approx 22\\ \\x_2=\dfrac{72.5+25\sqrt{1.37}}{2}\approx 51\\ \\(x-22)(x-51)\le 0\\ \\x\in [22,51]$

3 0

3 years ago