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3 years ago

13

I need to factor this equation: 2x^2-2x-12...

1 answer:

Molodets [167]3 years ago

3 0

Factor <span><span><span>2<span>x^2 </span></span>−<span>2x </span></span>− 12</span><span><span><span>
2<span>x^2 </span></span>− <span>2x </span></span>− 12</span><span>
=<span><span>2<span>(<span>x+2</span>)</span></span><span>(<span>x−3</span>)</span></span></span>
Answer:<span><span>
2<span>(<span>x+2</span>)</span></span><span>(<span>x−3</span><span>)</span></span></span>

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Explain 3 1/5 *5/8 i need an explanation or i wont get full marks

Sholpan [36]

3/1= 3.87500 8

Simplify 5/8
<span>31over 5 x 5 over 8 = 31/8

answer </span>3/1= 3.87500 8

5 0

3 years ago

Read 2 more answers

in a final exam you have four multliple choice questions left to do. each questions has five suggested answers and only one of t

kompoz [17]

Answer:

The probability that you get zero questions correct is 0.4096

The probability that you get one questions correct is 0.4096

The probability that you get three questions correct is 0.0256

Step-by-step explanation:

These probability can be describe with a Binomial Distribution. These distribution can be used when we have n identical and independent situations in which there is a probability p or probability of success and a probability q or probability of fail. Additionally q is equal to 1 - p. The probability of x for a situation in which we can apply binomial distribution is:

$P( x,n,p) = n Cx * p^{x } * q^ {n-x}$

Where x is the variable that says the number of success in the n situations

And nCx is calculate as:

$nC x = \frac{ n!}{ x! (n-x)! }$

From the question we can identify that:

n is equal to 4 multiple choice question
p is 1/5 or 0.2, the probability of get one question correct
q is 4/5 or 0.8, the probability of get one question incorrect

Then the probability of get zero questions correct of 4 questions is:

$P( 0, 4, 0.2) = 4 C0 * p^{0 } * q^ {4-0}= 0.4096$

The probability of get one question correct of 4 questions is:

$P( 1, 4, 0.2) = 4 C1 * p^{1 } * q^ {4-1}= 0.4096$

The probability of get three questions correct of 4 questions is:

$P( 3, 4, 0.2) = 4 C3 * p^{3 } * q^ {4-3}= 0.0256$

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4 years ago

Help me please please help me

kifflom [539]

1: positive
2: negative
3: positive
4: negative
:)))

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3 years ago

Identify a reflection about the x-axis or a reflection about the y-axis of f(x) = √-x by observing the equation of the function

olga55 [171]

Answer:

B) The base graph has been reflected about the y-axis

Step-by-step explanation:

We are given the function, $f(x)=\sqrt{-x}$ .

Now, as we know,

The new function after transformation is $g(x)=f(-x)=\sqrt{x}$ .

<em>As, the function f(x) is changing to g(x) = f(-x)</em> and from the graph below, we see that,

The base function is reflected across y-axis.

Hence, option B is correct.

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3 years ago

The probability of winning the 2010 Megamillions lottery was about 0.0000000057. Write the number in scientific notation.

telo118 [61]

Answer:

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Step-by-step explanation:

decimal point is 9 spots to the left that's why it's 10^-9

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2 years ago