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Korvikt [17]
3 years ago
14

Simplify each expression, then explain what property was used:

Mathematics
1 answer:
Ray Of Light [21]3 years ago
3 0
1. I belive this is in simplest form already.
2. 4s+9
3. 8s+4r
4. -2r+4
5. 6sx^{2}

Hope that helps a little bit!
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1. How many ways can you arrange the letters in the word MOMMY
77julia77 [94]
1. \frac{5!}{3!} which is further simplified to 5*4 which is 20.


2. \frac{5}{5+3+2}= \frac{5}{10}= \frac{1}{2}




8 0
3 years ago
6.1.3
Nata [24]

Answer:

The requirements that are necessary for a normal probability distribution to be a standard normal probability distribution are <em>µ</em> = 0 and <em>σ</em> = 1.

Step-by-step explanation:

A normal-distribution is an accurate symmetric-distribution of experimental data-values.  

If we create a histogram on data-values that are normally distributed, the figure of columns form a symmetrical bell shape.  

If X \sim N (µ, σ²), then Z=\frac{X-\mu}{\sigma}, is a standard normal variate with mean, E (Z) = 0 and Var (Z) = 1. That is, Z \sim N (0, 1).

The distribution of these z-variates is known as the standard normal distribution.

Thus, the requirements that are necessary for a normal probability distribution to be a standard normal probability distribution are <em>µ</em> = 0 and <em>σ</em> = 1.

8 0
3 years ago
Can someone help me !
Xelga [282]

Answer:

its b

Step-by-step explanation:

hope this helps

6 0
3 years ago
Read 2 more answers
The mean of Greg’s journey times to work on 3 days was 28 minutes.
EastWind [94]
The mean is found by adding the time it takes Greg each day and then diving by the number of days: 27+25+32=84.
84/3=28 min
it takes Greg 32 min on the third day
7 0
3 years ago
Read 2 more answers
Az + 17 = -4z - b<br> What is z?
Sholpan [36]

To solve Az + 17 = -4z - b for z, we begin by combining like terms. We get:

Az + 4z = -b - 17, or z(A+4) = -(b+17).

Dividing both sides by (A+4), we get:

-(b+17)

z = --------------

A+4

8 0
3 years ago
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