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Shalnov [3]
3 years ago
13

What’s the answer???(ONLY ANSWER IF YOU KNOW PLEASE)

Mathematics
1 answer:
Vlad1618 [11]3 years ago
7 0

Answer: B

<u>Step-by-step explanation:</u>

(a + b)³ = (a + b)(a² - ab + b²)

(\sqrt{2x} + \frac{1}{x})^{3} = (\sqrt{2x} + \frac{1}{x})(\sqrt{2x}^{2} - \sqrt{2x}(\frac{1}{x}) +(\frac{1}{x})^{2})

= (\sqrt{2x} + \frac{1}{x})(2x - \frac{\sqrt{2x}}{x} +\frac{1}{x^{2}})

= (\sqrt{2x}(2x - (\frac{\sqrt{2x}}{x}) +\frac{1}{x^{2}}) + \frac{1}{x}(2x -\frac{\sqrt{2x}}{x} +\frac{1}{x^{2}})

= 2x\sqrt{2x} - 2 +\frac{\sqrt{2x} }{x^{2}} + 2 - \frac{\sqrt{2x}} {x^{2}} + \frac{1}{x^{3} }

= 2x\sqrt{2x}+\frac{1}{x^{3} }


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100 points!!!
Bogdan [553]

Answer:

(1, 5)

Step-by-step explanation:

The solution to the system of equations is the point of intersection of the two lines.  From inspection of the graph, the point of intersection is at (1, 5).

<u>Proof</u>

The solution to a system of equations is the point at which the two lines meet.  

⇒ g(x) = f(x)

⇒ 3x + 2 = |x - 4| + 2

⇒ 3x = |x - 4|

⇒ 3x = x - 4   and   3x = -(x - 4)

⇒ 3x = x - 4

⇒ 2x = -4

⇒ x = -2

Inputting x = -2 into the 2 equations:

⇒ g(-2) = 3 · -2 + 2 = -4

⇒ f(-2) = |-2 - 4| + 2 = 8

Therefore, as the y-values are different, x = -2 is NOT a solution

⇒ 3x = -(x - 4)

⇒ 3x = 4 - x

⇒ 4x = 4

⇒ x = 1

Inputting x = 1 into the 2 equations:

⇒ g(1) = 3 · 1 + 2 = 5

⇒ f(1) = |1 - 4| + 2 = 5

Therefore, as the y-values are the same, x = 1  IS a solution

and the solution is (1, 5)

8 0
2 years ago
Diameter=10.5 in . Determine the area of each circle. Use 3.14 or 22/7 for pie . Round to the nearest tenth.
zloy xaker [14]

Answer:

86.5 square inches

Step-by-step explanation:

Area of circle: pi*r^2

  • first find the radius

10.5in /2= 5.25in

  • find the square

5.25^2=27.5625

  • multiply with pi

27.5625*3.14=86.54625

rounded 86.5 in

5 0
2 years ago
mary bought a bag of jelly beans there were 24 green ones which made up 8% of all the jelly beans in the bag howmany jelly beans
dimulka [17.4K]
There were 300 jelly beans in the bag. that includes the green ones.

6 0
3 years ago
Write all your answers as a fraction.<br> 1. 8/3 - 8/5/
allsm [11]

Answer:

16/15

Step-by-step explanation:

Simplify the following:

8/3 - 8/5

Put 8/3 - 8/5 over the common denominator 15. 8/3 - 8/5 = (5×8)/15 + (3 (-8))/15:

(5×8)/15 + (3 (-8))/15

5×8 = 40:

40/15 + (3 (-8))/15

3 (-8) = -24:

40/15 + (-24)/15

40/15 - 24/15 = (40 - 24)/15:

(40 - 24)/15

| 3 | 10

| 4 | 0

- | 2 | 4

| 1 | 6:

Answer: 16/15

5 0
3 years ago
The motion of an object was recorded by measuring the velocity of the object in meters per second at various times, as shown in
Komok [63]

The equation BEST represents the relationship between velocity and time is y = 2.2x + 6.

According to the statement

we have given some data in the form of graph according to the velocity per time and we have to find the relationship between the velocity and time.

So, for this purpose,

we know that the best method show the relationship is a slope intercept form.

So,

The slope intercept form is a the equation of a straight line in the form y = mx + b where m is the slope of the line and b is its y-intercept.

And

Using the coordinate points on the plane (0, 6) and (10, 28)

now we Determine the slope

Slope = 28-6/10-0

Slope = 22/10

Slope = 2.2

And then Determine the y-intercept

6 = 2.2(0) + b

b = 6

And now we have to put in the general form of the slope intercept form which is y = mx + b

Then the equation become

y = 2.2x + 6

So, The equation BEST represents the relationship between velocity and time is y = 2.2x + 6.

Learn more about slope intercept form here

brainly.com/question/1884491

#SPJ1

8 0
2 years ago
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