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Fynjy0 [20]
3 years ago
6

Which expression is equivalent to 4x^-2+3x^-5?

Mathematics
1 answer:
kari74 [83]3 years ago
7 0

Answer:

7x^-7, that is the answer

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Select the graph of y=cot x.
Kisachek [45]

Because of the vertical asymptote and the change in concavity, we conclude that the correct option is B.

<h3>Which is the graph of cotangent of x?</h3>

Remember that cot(x) = 1/tan(x).

Then we can rewrite:

cot(x) = cos(x)/sin(x).

We know that for x = 0, we have:

cot(0) = cos(0)/sin(0) = 1/0

Then we have a vertical asymptote that tends to ± infinity.

The only graph that meets this condition is the second and the third one, and by the curvature (we need to have a change of concavity/convexity) in the tangent function.

From that, we conclude that the correct option is B.

If you want to learn more about trigonometric functions:

brainly.com/question/8120556

#SPJ1

7 0
2 years ago
The product of two numbers is 192. what is the minimum value of the sum of the first value plus twice the second value
VARVARA [1.3K]
Let x and y be the two positive numbers. -  Their product is 192: x *  y  =  192   equation 1

-  the sum of the first plus twice the second is a minimum:  x + 2y

<span>From the first equation, y =  192 / x. 
Substitute that into the second equation:
</span>
 x + 2y = x + 2(<span>192/x ) = x + 384/x

</span>f(x) is minimum when f'(x) = 0 and f"(x) > 0 

f(x)= <span>x + 384/x
</span>
f(x) = 1-384/x^2 

<span>1-384  / x^2 =  0 

x^2-384 = 0 

x^ 2= 354
 x = radical  354    = 18.8  here i'm confused why the number is decimal
???/ 
</span>

4 0
4 years ago
Hey! Please help me
mafiozo [28]

Answer:

Exact: 10.08

To 1 decimal place: 10.1

Step-by-step explanation:

Just ask.

Hope this helps.

3 0
3 years ago
Question 10 of 10
Nuetrik [128]

Answer:

x+9=4x-4

=) x -4x = -4-9

=) -3x = -13

=) x = 13/3

It is not the form of ax 2 +bx +c =0

8 0
3 years ago
Bruce evaluates the expression on a math quiz, 8.8 ÷ 2.7 and gets an answer of 4.14.
ella [17]
The correct answer is choice d.....
4 0
4 years ago
Read 2 more answers
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