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3 years ago

Find the value of x.

Mathematics

1 answer:

inn [45]3 years ago

7 0

Answer:

Step-by-step explanation:

yeah, 9...........right???

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If f is the function defined by f(x) = 3x^5 - 5x^4, what are all the x coordinates of points of inflection for the graph of f?

gregori [183]

Answer:

D: 0 and 1

Step-by-step explanation:

Function is defined by;

f(x) = 3x^(5) - 5x⁴

Now, an inflection point will be a point on the graph where the inflection or concavity changes.

Thus, let's find the derivatives until we get there;

f'(x) = 15x⁴ - 20x³

f''(x) = 60x³ - 60x²

So factorizing gives;

f''(x) = 60x²(x - 1)

At f''(x) = 0, we have; x = 0 or x = 1

Thus, the x coordinates of points of inflection are 0 & 1

4 0

4 years ago

What is the solution of the system?

Kryger [21]

Greetings!

Solve the System, using Elimination:
$\left \{ {{4x+2y=18} \atop {2x+3y=15}} \right.$

Multiply Equation #2 by 2:
$\left \{ {{4x+2y=18} \atop {2(2x+3y)=2(15)}} \right.$

$\left \{ {{4x+2y=18} \atop {4x+6y=30}} \right.$

Eliminate variable x:
$-\frac{ \left \{ {{4x+2y=18} \atop {4x+6y=30}} \right.}{0x-4y=-12}$

$4y=-12$

Divide both sides by 4:
$\frac{4y}{4}= \frac{12}{4}$

$y=3$

Input this value into one of the Equations:
$4x+2y=18$

$4x+2(3)=18$

Simplify:
$4x+6=18$

$(4x+6)+(-6)=(18)+(-6)$

$4x=12$

Divide both sides by 4.
$\frac{4x}{4}= \frac{12}{4}$

$x=3$

The Solution to this System (The Point of Intersection):
$\boxed{(3,3)}$

I hope this helped!
-Benjamin

7 0

3 years ago

snow_tiger [21]

Answer:

Step-by-step explanation:

1st on is one solution

2nd one is no solution (the lines have the same slope but different y- intercepts

3rd is infinitely many solutions (the equations are the same)

8 0

3 years ago

How do you say in words these 2 decimals .400 and .004 ?

FrozenT [24]

The first one is "four tenths".

The second one is "four thousandths".

6 0

3 years ago

Read 2 more answers

A television transmitter tower is 400 feet high. if the angle between the guy wire (attached at the top) and the tower is 52.8°,

Mandarinka [93]

Answer:

Step-by-step explanation:

the asnwer is 23 i just answerd that qquestion and got it rugght

3 0

3 years ago