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4 years ago

Which of the following is equivalnt to √20

Mathematics

1 answer:

Elodia [21]4 years ago

6 0

2✓5.
In decimal form, it's 4.5.

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PLEASE HELP!! DUE TODAY!! ! 25 POINTS!! Given f (x) = x^4 - 5x^3 - 20x^2 + 60x + 144. Explain how to find the x and y-intercept

Marta_Voda [28]

the end behavior is that it goes positive and both ends (we look at x^4 ) and put in -inf and + inf and get +inf both times)

to get the y intercept let x=0 y intercept =144

to find the x intercepts we factor and find the zeros

using graphing technology we plot the function

we look at the ends of the graph if it goes down it goes to - inf, if it goes up it goes to + inf

the y intercept is where x=0

there x intercepts are where it crosses the x axis on the plot (there should be 4 unless some are imaginary)

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3 years ago

What is the solution to the equation 3.6m − 2.7 = −1.8m?

Finger [1]

Answer:

Option B is correct

m = 0.5 is the solution to the equation

Step-by-step explanation:

Given the equation:

$3.6m-2.7= -1.8m$

Add 2.7 to both sides, we have;

$3.6m-2.7+2.7= -1.8m+2.7$

Simplify:

$3.6m = -1.8m+2.7$

Add 1.8 m to both sides we have;

$5.4m =2.7$

Divide both sides by 5.4 we have;

$m = \frac{1}{2} = 0.5$

⇒m = 0.5

Therefore, the solution for the given equation is, 0.5

7 0

3 years ago

Read 2 more answers

Is -.012578142 rational or irrational

Natali5045456 [20]

Answer:

it is a irrational number

7 0

3 years ago

Solve 2x^3+7x^2-2x-1=o

Mashcka [7]

Answer:

$x=\sqrt{3}-2\\x=-\sqrt{3}-2\\x=\frac{1}{2}$

Step-by-step explanation:

This is a hard one

We have to use the rational root theorem

$2x^3+7x^2-2x-1$ = 0

We have to find all the factors of a and d and put them in a fraction

$a=2\\d=-1\\\frac{1}{1,2}$

We then plug them into the equation to see if any of them work

The equation isn't true when plugging 1, but is true when plugging in 1/2

factored form of 1/2 is (2x-1)

Then we divide the original equation by (2x-1) (you can use synthetic division or long division, it would be hard to type out the process for that) to get $x^2+4x+1$

So now the equation is $(2x-1)(x^2+4x+1)$

Solve the second half of this equation using the quadratic formula to get

$\sqrt{3}-2$ and $-\sqrt{3}-2$

We already know the solution for the first half of the equation (1/2)

So the final answers are:

$x=\sqrt{3}-2, -\sqrt{3}-2, \frac{1}{2}$

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3 years ago

Help pls!!!!!! im giving brainliest if you help.

devlian [24]

A is FALSE
B is FALSE
C is FALSE
D is TRUE

8 0

3 years ago

Read 2 more answers