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Bond [772]
3 years ago
10

What is -2y + 10 +2y -8 simpilified?​

Mathematics
2 answers:
Naily [24]3 years ago
7 0

Answer:

2

Step-by-step explanation:

-2y+10+2y-8

-2y+2y+10-8

10-8

2

olga2289 [7]3 years ago
4 0

Answer:

2

Step-by-step explanation:

-2y and 2y cancel each other. That leaves you with 10-8=2

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C-0.5km

Step-by-step explanation:

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6 0
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Does anyone know how to solve this <br> The answer is B but can anyone explain why
Lana71 [14]

Answer:

B. (0,-1)

Step-by-step explanation:

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6 0
2 years ago
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3 0
3 years ago
It’s number 9 <br> I think it’s 5 or 15 IDK plz tell me the answer to A and B plz
Oduvanchick [21]

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8 0
3 years ago
suppose that the distribution for total amounts spent by students vacationing for a week in florida is normally distributed with
pentagon [3]

The probability that the SRS of 10 students will spend an average of between 600 and 700 dollars is 0.8132.

Let x be the total amount spent by students.

x follows normal distribution with mean μ = 650,

                                  standard deviation δ = 120

We take a simple random sample of size n = 10

We are asked to find average spending of 10 students ( x ) is between 600 and 700

We have to find P( 600 <= x <= 700)

According to the sampling distribution of the sample mean x, it follows an approximately normal distribution with mean μ{x} = μ and standard deviation  δ{x} = {δ}/{√n}

Therefore here mean of x,( μ{x} ) = 650 and

standard deviation of x, δ{x} = {120}/{√10} = 37.9473

The probability that the SRS of 10 students will spend an average of between 600 and 700 dollars is,

Let Z= x - μ / δ

Z₁ = 600 - 650 / 37.9473 = -1.32 similarly

Z₂ = 700 - 650 / 37.9473 = 1.32

From standard normal distribution table, P( -1.32 <  x  <  1.32) = 0.8132

The probability that the SRS of 10 students will spend an average of between 600 and 700 dollars is 0.8132

To learn more about Normal distribution click here:

brainly.com/question/15103234

#SPJ4

3 0
1 year ago
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