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worty [1.4K]
3 years ago
12

(3x10)x8=___x(10x8) complete equation and tell which properties were used

Mathematics
1 answer:
Sindrei [870]3 years ago
5 0
The completed and correct version of this equation would be (3x10)x8= 3x(10x8). The property that is used in this instance would be the associative property.
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Suppose a normal distribution has a mean of 62 and a standard deviation of
Alekssandra [29.7K]

The probability that a data value is between 54 and 66 is 81.9%

z score is used to determine by how many standard deviations the raw score is above or below the mean.

The z score is given by:

z = \frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mu=mean,\sigma=standard\ deviation

Given that μ = 62, σ = 4

For x = 54:

z=\frac{54-62}{4}=-2

For x = 66:

z=\frac{66-62}{4}=1

P(54 < x < 66) = P(-2 < z < 1) = P(z < 1) - P(z < -2) = 0.8413 - 0.0228 = 81.9%

The probability that a data value is between 54 and 66 is 81.9%

Find out more on z score at: brainly.com/question/25638875

3 0
2 years ago
Which expression is not equivalent to -1.5(-6m+8n).
Evgen [1.6K]

Answer:

D

Step-by-step explanation:

-1.5(-6m+8n) = 9m-12n

3(3m -4n) = 9m - 12n

9m -12n = 9m -12n

-6(-1.5m +2n) = 9m - 12n

-2(-4.5m+ 4n) = 9m - 8n

7 0
2 years ago
Read 2 more answers
How can we write 4y = 5x - 12 in y = mx + b?
Y_Kistochka [10]

Answer:

y=\frac{5}{4}x-3

Step-by-step explanation:

Hope this helps!

=)

4 0
3 years ago
Read 2 more answers
If f(x) = x2 and g(x) =1/ 2x+3, find g(f(-1)).
Dvinal [7]
-1=1/2x+3
2=1/2x
(2)2=1/2x(2)
4=x
Answer: x=4
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3 years ago
Teagan was playing Trouble and recorded the number
almond37 [142]

Answer:

20%

Step-by-step explanation:

Think about it. 100 divided by 25 is four so just multiply 5 times 4 and you got 20. giving you the probability of 20%. Your Welcome! And I'm not a genius it's just simple math.

4 0
2 years ago
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