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erik [133]
3 years ago
10

What is 120/1,000 simplified??????????????????????????????????????????????????????????/

Mathematics
2 answers:
Nikolay [14]3 years ago
5 0
0.12 is your answer!
dedylja [7]3 years ago
5 0
The answer is 3/25.

Hope this helps!
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3x + 2 = -13. Plz help
mote1985 [20]
The answer is -5 hope this helps

3 0
3 years ago
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Help me with question 15 plz?
yawa3891 [41]

Answer:

B

Step-by-step explanation:

well plug in x and y

so if it says y=2x-3 put it as 7=(2x2)-3  and see if it gives u 7 and if it does di the next set of x and y numbers


6 0
3 years ago
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The life of Sunshine CD players is normally distributed with a mean of 4.1 years and a standard deviation of 1.3 years. A CD pla
castortr0y [4]

Using the normal distribution, we have that:

a) The sketch of the situation is given at the end of this answer.

b) The probability is:

P(2.8 \leq X \leq 7) = 0.8284

In a normal distribution with mean and standard deviation , the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

  • It measures how many standard deviations the measure is from the mean.  
  • After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

In this problem:

  • Mean of 4.1 years, thus \mu = 4.1.
  • Standard deviation of 1.3 years, thus \sigma = 1.3.

Item a:

The part between 2.8 and 7 years is shaded on the sketch given at the end of this answer.

Item b:

The probability is the <u>p-value of Z when X = 7 subtracted by the p-value of Z when X = 2.8</u>, thus:

X = 7:

Z = \frac{X - \mu}{\sigma}

Z = \frac{7 - 4.1}{1.3}

Z = 2.23

Z = 2.23 has a p-value of 0.9871.

X = 2.8:

Z = \frac{X - \mu}{\sigma}

Z = \frac{2.8 - 4.1}{1.3}

Z = -1

Z = -1 has a p-value of 0.1587.

0.9871 - 0.1587 = 0.8284, thus:

P(2.8 \leq X \leq 7) = 0.8284

A similar problem is given at brainly.com/question/25151638

7 0
3 years ago
What is it? A or B I've been stuck for a while please help
AlladinOne [14]

Answer:

<em>Correct choice: B</em>

Step-by-step explanation:

<u>System of non-linear equations</u>

It's given the following system of equations:

y=x^2+3x+5

y=x+13

We'll use the substitution method. Substituting y from the first equation into the second equation, we have:

x^2+3x+5=x+13

Moving all terms to the left side:

x^2+3x+5-x-13=0

Simplifying:

x^2+2x-8=0

Factoring:

(x+4)(x-2)=0

There are two solutions:

x=-4, x=2

The first solution gives a value for y:

y=-4+13=9

First solution: (-4,9)

The second solution gives a value for y:

y=2+13=15

Second solution: (2,15)

Correct choice: B

3 0
3 years ago
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Gene made a two-digit code. The first digit is odd. How many possible codes can he choose from?
MrRa [10]

Answer:

50

Step-by-step explanation:

Because the first digit can only be odd, there are 5 possible numbers

(1, 3, 5, 7, and 9)

The second digit can be any number because they didn't really say anything about it, meaning there are 10 possibilities (REMEMBER! you can use 0 as the 2nd digit in a number! Just not as the first)

0 -> 9

So, 5 x 10 = 50

7 0
2 years ago
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