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3 years ago

Need answer please!!!!!

Mathematics

2 answers:

Inessa05 [86]3 years ago

8 0

For this case we must find the value of the expression shown:

$2 ^ {\sqrt {19}}$

When entering in a calculator, we have the following:

$\sqrt {19} = 4.35889894354$

When rewriting the expression we have left:

$2 ^ {4,35889894354} = 20,51914828$

Rounding:

$2 ^ {\sqrt {19}} = 20.5191$

Answer:

20.5191

Option C

VladimirAG [237]3 years ago

6 0

Answer:

Step-by-step explanation:

You plug it into a calculator and it gives you that number. You have a calculator option on the left hand side that you can figure this out in as well.

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Evaluate \dfrac {15}k

Georgia [21]

Answer:

Step-by-step explanation:

We desire to evaluate the fraction: $\dfrac{15}{k}$ when k=3.

This is a simple substitution, so what is required is

Replace k with the given number
Simplify the resulting expression

Therefore, when k=3

$\dfrac{15}{k}=\dfrac{15}{3}=5$

You can try the same for any value of k.

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3 years ago

Factor -5a^2+10ab^2-20+25a^3b <br> i need help please!

kumpel [21]

First we see that we can factor out a 5 from everybody
5(-a^2+2ab^2-4+5ba^3)
trial and eror and experience
order in poawer order
5(5a^3b-a^2+2ab^2-4)
5(a^2(5ab-1)+2(ab^2-2))
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5 0

3 years ago

Read 2 more answers

The degree of the polynomial function f(x) is 3. The roots of the equation f(x)=0 are −4 , 0, and 2. Which graph could be the gr

KATRIN_1 [288]

We know that the polynomial function is of degree 3, and that its roots are -4, 0, 2.

With this data we can write a generic equation for the function:

f (x) = bx (x + 4) (x-2)

Since the function is of degree 3 and cuts the axis at x = 0, then it has rotational symmetry with respect to the origin.

The graph of the function can be of two main forms, based on the value of the coefficient b.

If b is positive then the function grows from y = -infinite and cuts the x-axis for the first time in -4. Then it decreases, cuts at x = 0 and begins to grow again cutting the x-axis for the third time at x = 2. and continues to grow until y = infnit

If b is negative, then the function decreases from y = infinity and cuts the x-axis for the first time in -4. Then it grows, cuts at x = 0 and begins to decrease again by cutting the x-axis for the third time at x = 2, and continues to decrease until y = -infnit.

In the attached images the graphs of the function f (x) are shown assuming b = -1 and b = 1