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Zina [86]
2 years ago
7

5. Which of the following is equivalent to x2 + 3x + 2? Select all that apply.

Mathematics
1 answer:
worty [1.4K]2 years ago
8 0

Answer:

The answer is the third option

Step-by-step explanation:

(x + 1)(x + 2)

x(x + 2) + 1(x + 2)

x² + 2x + x + 2

x² + 3x + 2

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Solve for the values of x in the equation: <br> 2^(x) = 4x.
Eva8 [605]

There are two of them. 

I don't know a mechanical way to 'solve' for them.

One can be found by trial and error:

x=0 . . . . . 2^0 = 1 . . . . . 4(0) = 0 . . . . . no, that doesn't work
x=1 . . . . . 2^1 = 2 . . . . . 4(1) = 4 . . . . . no, that doesn't work
x=2 . . . . . 2^2 = 4 . . . . . 4(2) = 8 . . . . . no, that doesn't work
x=3 . . . . . 2^3 = 8 . . . . . 4(3) = 12 . . . . no, that doesn't work
<em>x=4</em> . . . . . 2^4 = <em><u>16</u></em> . . . . 4(4) = <em><u>16</u></em> . . . . Yes !  That works !       yay !

For the other one, I constructed tables of values for 2^x and (4x)
in a spread sheet, then graphed them, and looked for the point
where the graphs of the two expressions cross.

The point is near, but not exactly,         <em>x = 0.30990693...

</em>
If there's a way to find an analytical expression for the value, it must involve
some esoteric kind of math operations that I didn't learn in high school or
engineering school, and which has thus far eluded me during my lengthy
residency in the college of hard knocks.<em> </em> If anybody out there has it, I'm
waiting with all ears.<em>

</em>
7 0
3 years ago
Read 2 more answers
the yeastie boys new album bread and the bank goes on sale next week they autographed 85% of 2000 copies before they were packag
kupik [55]
0.85 x 2000 = 1700 copies
8 0
3 years ago
Read 2 more answers
Help pls ! I’ll mark brainliest!
kogti [31]

Answer:

The first and third answers are correct

Step-by-step explanation:

First answer=11/4=2.75

Second answer=4/9=0.444...

Third answer=4/3=1.333...

Fourth answer=5/9=0.5555555556

2/3=0.66666666667

5 0
2 years ago
Read 2 more answers
A flashlight has 7 batteries, 5 of which are defective. If 5 are selected at random without replacement, find the probability th
TEA [102]
71.4 % chance I think is your answer. 
8 0
3 years ago
n a call center the number of received calls in a day can be modeledby a Poisson random variable. We know that, on average, 0.5%
guapka [62]

Answer:Pois(ln(200))

Step-byy-step explanation:

Let N be the number of received calls in a day

That is

N∼Pois(λ).

0.5% = 0.5/100 = 1/200 of no calls

P(N=0)=e^−λ=1/200

-λ=e^(1/200)

λ=in(200)

Our number of calls in a day is distributed Pois(ln(200)).

7 0
3 years ago
Read 2 more answers
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